(19)
(11)EP 3 767 357 A1

(12)EUROPEAN PATENT APPLICATION

(43)Date of publication:
20.01.2021 Bulletin 2021/03

(21)Application number: 20160273.7

(22)Date of filing:  28.02.2020
(51)International Patent Classification (IPC): 
G02B 6/44(2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 16.07.2019 IN 201921028499

(71)Applicant: Sterlite Technologies Limited
431 136 Maharashtra (IN)

(72)Inventors:
  • Sahoo, Kishore
    431136 Aurangabad (IN)
  • Kumar, Sravan
    431136 Aurangabad (IN)
  • Mishra, Atul
    431136 Aurangabad (IN)
  • Shukla, Vikash
    431136 Aurangabad (IN)
  • Thakur, Neha
    431136 Aurangabad (IN)

(74)Representative: Hepworth Browne 
15 St. Pauls Street
Leeds LS1 2JG
Leeds LS1 2JG (GB)

  


(54)INTERMITTENTLY BONDED OPTICAL FIBRE RIBBON


(57) The method for creating an optical fibre ribbon (102) of the present disclosure includes a first step of arranging a plurality of optical fibres (104) in parallel to each other for creating the optical fibre ribbon (102). In addition, the method includes a second step of intermittently bonding the plurality of optical fibres (104) partially at specific intervals using a matrix material (106). Further, intermittent bonding of the plurality of optical fibres (104) is in pattern of text. Furthermore, intermittent bonding of the plurality of optical fibres (104) allows the optical fibre ribbon (102) to bend along preferential axis. Moreover, intermittent bonding of the plurality of optical fibres (104) is in pattern of text.




Description

Field of the Invention



[0001] The present disclosure relates to the field of optical fibre ribbon and, in particular, relates to an intermittently bonded optical fibre ribbon.

Background of the invention



[0002] With the advancement of science and technology, various modern technologies are being employed for communication purposes. One of the most important modern communication technologies is optical fibre communication technology. Over the last few years, optical fibres are widely used for communication to meet the increasing demands. Optical fibres are often bundled together in parallel fashion to form a product known as an optical fibre ribbon. In general, the optical fibre ribbon includes optical fibres that have been encased with a suitable matrix material. Typically, the optical fibre ribbons in the cable provide an advantage of mass fusion splicing which reduces the splicing time. However, this increases overall diameter of the optical fibre cable. Also, large dimensions of the optical fibre ribbons lead to the increase of diameter of the optical fibre cable. Conventionally, the optical fibre cables include multiple optical fibres present inside the buffer tubes in a form of ribbons. The optical fibre cable with a large number of ribbons require multiple buffer tubes. Each of the buffer tubes has a thickness which leads to an increase in the overall diameter of the optical fibre cables.

[0003] In light of the foregoing discussion, there exists a need for an optical fibre ribbon and an optical fibre cable which overcomes the above cited drawbacks of conventionally known optical fibre ribbons.

SUMMARY OF THE INVENTION



[0004] The present disclosure provides a method for creating an optical fibre ribbon. The method includes a first step of arranging a plurality of optical fibres in parallel to each other for creating the optical fibre ribbon. In addition, the method includes a second step of intermittently bonding the plurality of optical fibres partially at specific intervals using a matrix material. Further, intermittent bonding of the plurality of optical fibres is in pattern of text.

[0005] A primary object of the present disclosure is to provide an intermittently bonded optical fibre ribbon with lower dimensions.

[0006] Another object of the present disclosure is to provide the intermittently bonded optical fibre ribbon that may be easily rolled.

[0007] Yet another object of the present disclosure is to provide the intermittently bonded optical fibre ribbon with optical fibres partially bonded at intervals.

[0008] Yet another object of the present disclosure is to provide an optical fibre cable of reduced diameter in which the intermittently bonded optical fibre ribbon is installed.

[0009] Yet another object of the present disclosure is to provide the intermittently bonded optical fibre ribbon with increased flexibility.

[0010] Yet another object of the present disclosure is to provide the optical fibre cable with high fibre density in which the intermittently bonded optical fibre ribbon is installed.

[0011] In an embodiment of the present disclosure, the matrix material is coloured as per colour code.

[0012] In an embodiment of the present disclosure, the matrix material is fluorescent matrix material.

[0013] In an embodiment of the present disclosure, intermittent bonding of the plurality of optical fibres is intermittent in a plane perpendicular to axis of the optical fibre ribbon.

[0014] In an embodiment of the present disclosure, intermittent bonding of the plurality of optical fibres allows the optical fibre ribbon to bend along preferential axis.

[0015] In an embodiment of the present disclosure, the matrix material of the optical fibre ribbon is characterized by thickness in range of about 15 micron to 20 micron.

[0016] In an embodiment of the present disclosure, the matrix material of the optical fibre ribbon is ultra violet acrylate resin.

[0017] In an embodiment of the present disclosure, the method includes binding a plurality of optical fibre ribbons with a polyester binder. In addition, the polyester binder is helically rotated over the plurality of optical fibre ribbons for grouping the plurality of optical fibre ribbons without using a buffer tube. Further, each of the plurality of optical fibre ribbons corresponds to the optical fibre ribbon.

[0018] In an embodiment of the present disclosure, the method includes binding the plurality of the optical fibre ribbons with the polyester binder. Each of the plurality of optical fibre ribbons corresponds to the optical fibre ribbon. In addition, the polyester binder is a coloured polyester binder.

BRIEF DESCRIPTION OF DRAWING



[0019] In order to best describe the manner in which the above-described embodiments are implemented, as well as define other advantages and features of the disclosure, a more particular description is provided below and is illustrated in the appended drawings. Understanding that these drawings depict only exemplary embodiments of the invention and are not therefore to be considered to be limiting in scope, the examples will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:

FIG. 1 illustrates a cross sectional view of an optical fibre ribbon, in accordance with an embodiment of the present disclosure;

FIG. 2 illustrates a sectional view of the optical fibre ribbon, in accordance with another embodiment of the present disclosure;

FIG. 3 illustrates an overview of the optical fibre ribbon, in accordance with yet another embodiment of the present disclosure;

FIG. 4 illustrates a view of the optical fibre ribbon, in accordance with yet another embodiment of the present disclosure;

FIG. 5 illustrates a cross-sectional view of a polyester binder, in accordance with an embodiment of the present disclosure; and

FIG. 6 illustrates a cross-sectional view of an optical fibre ribbon cable 600, in accordance with an embodiment of the present disclosure.



[0020] It should be noted that the accompanying figures are intended to present illustrations of few exemplary embodiments of the present disclosure. These figures are not intended to limit the scope of the present disclosure. It should also be noted that accompanying figures are not necessarily drawn to scale.

REFERENCE NUMERALS IN THE DRAWINGS



[0021] For a more complete understanding of the present invention parts, reference is now made to the following descriptions:

100. Cross sectional view.

102. Optical fibre ribbon.

104. Plurality of optical fibres.

106. Matrix material.

500. Polyester binder.

502. Plurality of optical fibre ribbons.

504. One or more water swellable yarns.

600. Optical fibre ribbon cable.

602. Plurality of polyester binders.

604. Jacket.

606. Embedded strength member.

608. Rip cord.


DETAILED DESCRIPTION OF THE INVENTION



[0022] The following detailed description is of the best currently contemplated modes of carrying out exemplary embodiments of the invention. The description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention.

[0023] Reference in this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present technology. The appearance of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Moreover, various features are described which may be exhibited by some embodiments and not by others. Similarly, various requirements are described which may be requirements for some embodiments but not for other embodiments.

[0024] Reference will now be made in detail to selected embodiments of the present disclosure in conjunction with accompanying figures. The embodiments described herein are not intended to limit the scope of the disclosure, and the present disclosure should not be construed as limited to the embodiments described. This disclosure may be embodied in different forms without departing from the scope and spirit of the disclosure. It should be understood that the accompanying figures are intended and provided to illustrate embodiments of the disclosure described below and are not necessarily drawn to scale. In the drawings, like numbers refer to like elements throughout, and thicknesses and dimensions of some components may be exaggerated for providing better clarity and ease of understanding.

[0025] Moreover, although the following description contains many specifics for the purposes of illustration, anyone skilled in the art will appreciate that many variations and/or alterations to said details are within the scope of the present technology. Similarly, although many of the features of the present technology are described in terms of each other, or in conjunction with each other, one skilled in the art will appreciate that many of these features can be provided independently of other features. Accordingly, this description of the present technology is set forth without any loss of generality to, and without imposing limitations upon, the present technology.

[0026] It should be noted that the terms "first", "second", and the like, herein do not denote any order, ranking, quantity, or importance, but rather are used to distinguish one element from another. Further, the terms "a" and "an" herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.

[0027] Referring to FIG. 1, this is a cross sectional view 100 of an optical fibre ribbon 102, in accordance with an embodiment of the present disclosure. In general, optical fibre ribbons are made of number of optical fibres bonded together with matrix. In addition, optical fibres are often bundled together in parallel fashion to form optical fibre ribbon. The optical fibre ribbon 102 includes a plurality of optical fibres 104 and a matrix material 106. In general, optical fibre is a medium associated with transmission of information over long distances in the form of light pulses. In addition, optical fibre is a type of cabling technology that uses light to transmit voice and data communications over long distances. In an embodiment of the present discourse, number of the plurality of optical fibres 104 in the optical fibre ribbon 102 is 12. In another embodiment of the present disclosure, number of the plurality of optical fibres 104 in the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, each optical fibre of the plurality of optical fibres 104 has diameter in range of about 180 micron to 220 micron. In another embodiment of the present disclosure, range of diameter of each optical fibre of the plurality of optical fibres 104 may vary.

[0028] In an embodiment of the present disclosure, the plurality of optical fibres 104 is intermittently bonded with a colored matrix. In general, intermittent bonding between optical fibres provides high flexibility to the optical fibres. In addition, intermittent bonding of the plurality of optical fibres 104 allows the optical fibre ribbon 102 to bend along preferential axis. Further, bending of the optical fibre ribbon 102 along preferential axis allows easy installation in space constrained regions. In another embodiment of the present disclosure, the plurality of optical fibres 104 is partially bonded with each other at irregular intervals. In yet another embodiment of the present disclosure, the plurality of optical fibres 104 is partially bonded with each other at regular intervals. The plurality of optical fibres 104 is partially bonded with each other using the matrix material 106 forming pattern of text. In general, matrix material provides various handling characteristics to optical fibre ribbons. The various handling characteristics include encapsulation, easy peel and breakout, robustness and the like. In an embodiment of the present disclosure, the matrix material 106 of the optical fibre ribbon 102 is made up of ultraviolet acrylate resin. In another embodiment of the present disclosure, the matrix material 106 of the optical fibre ribbon 102 is made up of any other suitable material of the like.

[0029] In an embodiment of the present disclosure, the plurality of optical fibres 104 is partially bonded with each other using the matrix material 106 forming a first pattern of text. The first pattern of text includes one or more alphabets. In an embodiment of the present disclosure, the matrix material 106 forms the first pattern of text "BL". In an embodiment of the present disclosure, the matrix material 106 of the optical fibre ribbon 102 has thickness in range of about 15 micrometer to 20 micrometer. In another embodiment of the present disclosure, thickness of the matrix material 106 of the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, distance between the two consecutive first patterns of text "BL" in the optical fibre ribbon 102 is in range of about 50 millimeter to 200 millimeter. In another embodiment of the present disclosure, distance between the two consecutive first patterns of text "BL" in the optical fibre ribbon 104 may vary. In an embodiment of the present disclosure, distance between each alphabet of the one or more alphabets in the first pattern of text is in range of about 5 millimeter to 10 millimeter. In another embodiment of the present disclosure, distance between each alphabet of the one or more alphabets in the first pattern of text may vary. In an embodiment of the present disclosure, width of the matrix material 106 applied between any two consecutive optical fibres of the plurality of optical fibres 104 is in range of about 0.5 millimeter to 10 millimeter. In another embodiment of the present disclosure, width of the matrix material 106 applied between any two consecutive optical fibres of the plurality of optical fibres 104 may vary. Further, the matrix material 106 is a colored fluorescent matrix material. The colored fluorescent matrix material allows easy identification of the optical fibre ribbon 102 even during night time. In an embodiment of the present disclosure, color of the matrix material 106 is blue. In another embodiment of the present disclosure, the matrix material 106 may be of any color.

[0030] In an embodiment of the present disclosure, the optical fibre ribbon 102 facilitates mass fusion splicing of the plurality of optical fibres 104. In general, mass fusion splicing technique is used to fuse a number of optical fibres in a single ribbon simultaneously. In general, mass fusion splicing technique can fuse up to 12 fibres in the single ribbon at one time. In an embodiment of the present disclosure, mass fusion splicing technique fuses each of the plurality of optical fibres 104 into the optical fibre ribbon 102 simultaneously. In addition, mass fusion splicing technique reduces time for installation of the optical fibre ribbon 102 in a cable. Further, mass fusion splicing technique reduces installation labor cost. In an embodiment of the present disclosure, mass fusion splicing technique reduces dimensions of the optical fibre ribbon 102. In addition, dimensions of the optical fibre ribbon 102 include but may not be limited to width and height. Further, the optical fibre ribbon 102 is characterized by width and height. In an embodiment of the present disclosure, the optical fibre ribbon 102 has width in range of about 2 millimeter to 3.2 millimeter. In another embodiment of the present disclosure, width of the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, the optical fibre ribbon 102 has height in range of about 200 micron to 310 micron. In another embodiment of the present disclosure, height of the optical fibre ribbon 102 may vary.

[0031] Referring to FIG. 2, this is a sectional view 200 of the optical fibre ribbon 102, in accordance with another embodiment of the present disclosure. The optical fibre ribbon 102 includes the plurality of optical fibres 104 and the matrix material 106. In an embodiment of the present disclosure, each optical fibre of the plurality of optical fibres 104 has diameter in range of about 180 microns to 220 microns. In another embodiment of the present disclosure, range of diameter of each optical fibre of the plurality of optical fibres 104 may vary. The plurality of optical fibres 104 is intermittently bonded using the matrix material 106 forming a second pattern of text. The second pattern of text includes the one or more alphabets. In an embodiment of the present disclosure, the matrix material 106 forms the second pattern of text "OR". In an embodiment of the present disclosure, the matrix material 106 of the optical fibre ribbon 102 has thickness in range of about 15 micrometer to 20 micrometer. In another embodiment of the present disclosure, thickness of the matrix material 106 of the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, distance between the two consecutive second pattern of text "OR" in the optical fibre ribbon 102 is in range of about 50 millimeter to 200 millimeter. In another embodiment of the present disclosure, distance between the two consecutive second pattern of text "OR" in the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, distance between each alphabet of the one or more alphabets in the second pattern of text is in range of about 5 millimeter to 10 millimeter. In another embodiment of the present disclosure, range of distance between each alphabet of the one or more alphabets in the second pattern of text may vary. In an embodiment of the present disclosure, width of the matrix material 106 applied between any two consecutive optical fibres of the plurality of optical fibres 104 is in range of about 0.5 millimeter to 10 millimeter. In another embodiment of the present disclosure, width of the matrix material 106 applied between any two consecutive optical fibres of the plurality of optical fibres 104 may vary. Further, the matrix material 106 is the colored fluorescent matrix material. The colored fluorescent matrix material allows easy identification of the optical fibre ribbon 102 even during night time. In an embodiment of the present disclosure, color of the matrix material 106 is orange. In another embodiment of the present disclosure, the matrix material 106 may be of any color.

[0032] In an embodiment of the present disclosure, the optical fibre ribbon 102 facilitates mass fusion splicing of the plurality of optical fibres 104. In an embodiment of the present disclosure, mass fusion splicing technique reduces dimensions of the optical fibre ribbon 102. The dimensions of the optical fibre ribbon 102 includes but may not be limited to width and height. In addition, the optical fibre ribbon 102 is characterized by width and height. In an embodiment of the present disclosure, width of the optical fibre ribbon 102 is in range of about 2 millimeter to 3.2 millimeter. In another embodiment of the present disclosure, range of width of the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, the optical fibre ribbon 102 has height in range of about 200 micron to 310 micron. In another embodiment of the present disclosure, height of the optical fibre ribbon 102 may vary.

[0033] Referring to FIG. 3, this is an overview 300 of the optical fibre ribbon 102, in accordance with yet another embodiment of the present disclosure. The optical fibre ribbon 102 includes the plurality of optical fibres 104 and the matrix material 106. In an embodiment of the present disclosure, each optical fibre of the plurality of optical fibres 104 has diameter in range of about 180 micron to 220 micron. In another embodiment of the present disclosure, diameter of each optical fibre of the plurality of optical fibres 104 may vary. The plurality of optical fibres 104 is intermittently bonded using the matrix material 106 forming a third pattern of text. The third pattern of text includes the one or more alphabets. In an embodiment of the present disclosure, the matrix material 106 forms the third pattern of text "GR". The matrix material 106 is the colored fluorescent matrix material. The colored fluorescent matrix material allows easy identification of the optical fibre ribbon 102 even during night time. In an embodiment of the present disclosure, color of the matrix material 106 is green. In another embodiment of the present disclosure, the matrix material 106 may be of any color. In an embodiment of the present disclosure, the matrix material 106 of the optical fibre ribbon 102 has thickness in range of about 15 micrometer to 20 micrometer. In another embodiment of the present disclosure, thickness of the matrix material 106 of the optical fibre ribbon 102 may vary.

[0034] In an embodiment of the present disclosure, the optical fibre ribbon 102 facilitates mass fusion splicing of the plurality of optical fibres 104. In an embodiment of the present disclosure, mass fusion splicing technique reduces dimensions of the optical fibre ribbon 102. The dimensions of the optical fibre ribbon 102 includes but may not be limited to width and height. In an embodiment of the present disclosure, width of the optical fibre ribbon 102 is in range of about 2 millimeter to 3.2 millimeter. In another embodiment of the present disclosure, range of width of the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, distance between the two consecutive third patterns of text "GR" in the optical fibre ribbon 102 is in range of about 50 millimeter to 200 millimeter. In another embodiment of the present disclosure, distance between the two consecutive third patterns of text "GR" in the optical fibre ribbon 106 may vary. In an embodiment of the present disclosure, distance between each alphabet of the one or more alphabets in the third pattern of text is in range of about 5 millimeter to 10 millimeter. In another embodiment of the present disclosure, range of distance between each alphabet of the one or more alphabets in the third pattern of text may vary. In an embodiment of the present disclosure, width of the matrix material 106 applied between any two consecutive optical fibres of the plurality of optical fibres 104 is in range of about 0.5 millimeter to 10 millimeter. In another embodiment of the present disclosure, range of width of the matrix material 106 applied between any two consecutive optical fibres of the plurality of optical fibres 104 may vary. In an embodiment of the present disclosure, the optical fibre ribbon 102 has height in range of about 200 micron to 310 micron. In another embodiment of the present disclosure, range of height of the optical fibre ribbon 102 may vary.

[0035] Referring to FIG. 4, this is a view 400 of the optical fibre ribbon 102, in accordance with yet another embodiment of the present disclosure. The optical fibre ribbon 102 includes the plurality of optical fibres 104 and the matrix material 106. In an embodiment of the present disclosure, each optical fibre of the plurality of optical fibres 104 has diameter in range of about 180 micron to 220 micron. In another embodiment of the present disclosure, diameter of each optical fibre of the plurality of optical fibres 104 may vary. The plurality of optical fibres 104 is intermittently bonded using the matrix material 106 forming a fourth pattern of text. The fourth pattern of text includes the one or more alphabets. The matrix material 106 forms the fourth pattern of text "BR". In an embodiment of the present disclosure, the matrix material 106 of the optical fibre ribbon 102 has thickness in range of about 15 micrometer to 20 micrometer. In another embodiment of the present disclosure, thickness of the matrix material 106 of the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, distance between the two consecutive fourth patterns of text "BR" in the optical fibre ribbon 102 is in range of about 50 millimeter to 200 millimeter. In another embodiment of the present disclosure, range of distance between the two consecutive fourth patterns of text "BR" in the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, distance between each alphabet of the one or more alphabets in the fourth pattern of text is in range of about 5 millimeter to 10 millimeter. In another embodiment of the present disclosure, distance between each alphabet of the one or more alphabets in the fourth pattern of text may vary. In an embodiment of the present disclosure, width of the matrix material 106 applied between any two consecutive optical fibres of the plurality of optical fibres 104 is in range of about 0.5 millimeter to 10 millimeter. In another embodiment of the present disclosure, range of width of the matrix material 106 applied between any two consecutive optical fibres of the plurality of optical fibres 104 may vary. Further, the matrix material 106 is the colored fluorescent matrix material. The colored fluorescent matrix material allows easy identification of the optical fibre ribbon 102 even during night time. In an embodiment of the present disclosure, color of the matrix material 106 is brown. In another embodiment of the present disclosure, the matrix material 106 may be of any color.

[0036] In an embodiment of the present disclosure, the optical fibre ribbon 102 facilitates mass fusion splicing of the plurality of optical fibres 104. In an embodiment of the present disclosure, mass fusion splicing technique reduces dimensions of the optical fibre ribbon 102. The dimensions of the optical fibre ribbon 102 includes but may not be limited to width and height. In an embodiment of the present disclosure, width of the optical fibre ribbon 102 is in range of about 2 millimeter to 3.2 millimeter. In another embodiment of the present disclosure, range of width of the optical fibre ribbon 102 may vary. In an embodiment of the present disclosure, the optical fibre ribbon 102 has height in range of about 200 micron to 310 micron. In another embodiment of the present disclosure, height of the optical fibre ribbon 102 may vary.

[0037] Referring to FIG. 5, this is a cross-sectional view of a polyester binder 500, in accordance with an embodiment of the present disclosure. The polyester binder 500 includes a plurality of optical fibre ribbons 502 and one or more water swellable yarns 504.

[0038] Each of the plurality of optical fibre ribbons 502 corresponds to the optical fibre ribbon 102. In addition, the plurality of optical fibre ribbons 502 is encapsulated in the polyester binder 500. In addition, each of the plurality of optical fibre ribbons 502 is a flexible optical fibre ribbon. Each of the plurality of optical fibre ribbons 502 includes a plurality of optical fibres. In general, an optical fibre is used for transmitting information in the form of light pulses from one end to another. In addition, the optical fibre is a thin strand of glass or plastic capable of transmitting optical signals. Also, the optical fibre is configured to transmit large amount of information over long distances. Also, the optical fibre includes a core region and a cladding region. In an embodiment of the present disclosure, the plurality of optical fibres is arranged in an array in each of the plurality of optical fibre ribbons.

[0039] In an embodiment of the present disclosure, the plurality of optical fibres in each of the plurality of optical fibre ribbons 502 corresponds to 12 optical fibres. In another embodiment of the present disclosure, the plurality of optical fibres in each of the plurality of optical fibre ribbons 502 may correspond to any suitable number of optical fibres.

[0040] In an embodiment of the present disclosure, each of the plurality of optical fibres is a colored optical fibre. In an example, each of the plurality of optical fibres has same color. In another example, each of the plurality of optical fibres has different color. Further, the plurality of optical fibres is colored to identify each of the plurality of optical fibres. In another example, each of the plurality of optical fibres is not a colored fibre.

[0041] In addition, the plurality of optical fibre ribbons 502 facilitates to reduce stresses on the plurality of optical fibres. In an embodiment of the present disclosure, each of the plurality of optical fibre ribbons 502 is a rollable optical fibre ribbon. In general, rolling of each of the plurality of optical fibre ribbons 502 allows it to consume less space in any optical fibre ribbon cable. Further, the plurality of optical fibre ribbons 502 facilitates in efficient mass fusion splicing operations.

[0042] The polyester binder 500 includes the one or more water swellable yarns 504. The one or more water swellable yarns 504 are encapsulated in the polyester binder 500. In addition, the one or more water swellable yarns 504 are water blocking yarns. Further, the one or more water swellable yarns 504 inherit water blocking properties to prevent water penetration. In an embodiment of the present disclosure, the one or more water swellable yarns 504 correspond to 5 water swellable yarns. In another embodiment of the present disclosure, the one or more water swellable yarns 504 may correspond to any suitable number of water swellable yarns.

[0043] The polyester binder 500 encapsulates the plurality of optical fibre ribbons 502. In addition, the polyester binder 500 encapsulates the one or more water swellable yarns 504. Further, the polyester binder 500 is helically rotated over the plurality of optical fibre ribbons 502. Furthermore, the polyester binder 500 is helically rotated over the one or more water swellable yarns 504. In an embodiment of the present disclosure, the plurality of optical fibre ribbons 502 inside the polyester binder 500 corresponds to 12 optical fibre ribbons. In another embodiment of the present disclosure, the plurality of optical fibre ribbons 502 inside the polyester binder 500 may correspond to any suitable number of optical fibre ribbons.

[0044] The polyester binder 500 holds the plurality of optical fibre ribbons 502. In addition, the polyester binder 500 holds the one or more water swellable yarns 504. In an embodiment of the present disclosure, the polyester binder 500 is a colored polyester binder. Further, the polyester binder 500 is colored to identify the plurality of optical fibre ribbons 502. Furthermore, the color of the polyester binder 500 helps in identification of the plurality of optical fibre ribbons during installation and splicing of any optical fibre ribbon cable. In another embodiment of the present disclosure, the color of the polyester binder 500 includes but may not be limited to green, blue, yellow and red. In another embodiment of the present disclosure, the polyester binder 500 is not colored.

[0045] Further, it may be noted that in FIG. 5, the polyester binder 500 includes twelve optical fibre ribbons; however, those skilled in the art would appreciate that more or less number of the optical fibre ribbons may be included in the polyester binder 500.

[0046] Referring to FIG. 6, this is a cross-sectional view of an optical fibre ribbon cable 600, in accordance with an embodiment of the present disclosure. The optical fibre ribbon cable 600 includes a plurality of polyester binders 602 and a jacket 604.

[0047] The plurality of polyester binders 602 is enclosed in the optical fibre ribbon cable 600. In addition, each of the plurality of polyester binders 602 is the polyester binder 500 of FIG. 5. In an embodiment of the present disclosure, the plurality of optical fibre ribbons 502 corresponds to 12 optical fibre ribbons. In another embodiment of the present disclosure, the plurality of optical fibre ribbons may correspond to any suitable number of optical fibre ribbons. In an embodiment of the present disclosure, each of the plurality of polyester binders 602 is colored. In another embodiment of the present disclosure, each of the plurality of polyester binders 602 is not colored. In an example, color of each of the plurality of polyester binders 602 includes but may not be limited to green, blue, yellow and red. In addition, the plurality of polyester binders 602 facilitates in reduction of overall diameter of the optical fibre ribbon cable 600.

[0048] The optical fibre ribbon cable 600 includes the jacket 604. The jacket 604 is an outermost layer of the optical fibre ribbon cable 600. In addition, the jacket 604 encapsulates the plurality of polyester binders 602. Further, the jacket 604 provides protection to the optical fibre ribbon cable 600. Furthermore, the jacket 604 provides robustness to the optical fibre ribbon cable 600 for outdoor applications. Moreover, the jacket 604 provides resistance to crush forces and rodent bites.

[0049] The optical fibre ribbon cable 600 includes an embedded strength member 606 (i.e. an embedded FRP) to provide tensile strength to the optical fibre ribbon cable 600, and a rip cord 608 to tear/remove the outer sheath to access the buffer tubes.

[0050] In an embodiment of the present disclosure, number of the polyester binder 500 in the optical fibre ribbon cable 600 is 7. In another embodiment of the present disclosure, number of the polyester binder 500 in the optical fibre ribbon cable 600 may vary.

[0051] Further, it may be noted that in FIG. 6 the optical fibre ribbon cable 600 includes seven number of polyester binders; however, those skilled in the art would appreciate that more or less number of polyester binders is included in the optical fibre ribbon cable 600.

[0052] The optical fibre ribbon have numerous advantages over the prior art. The optical fibre ribbon is flexible and easy to deploy in optical fibre cables. In addition, the optical fibre ribbon has small dimensions. Further, small dimensions of the optical fibre ribbon reduces overall diameter of optical fibre cable upon installation. Furthermore, the optical fibre ribbon may have high fibre density. Moreover, the optical fibre ribbon has colored fluorescent matrix material that makes easy to distinguish at night. The polyester binder facilitates in the reduction of diameter of an optical fibre ribbon cable having high fibre count. In addition, the polyester binder facilitates in the reduction of overall weight of the optical fibre ribbon cable. Furthermore, the polyester binder facilitates in easier handling of the optical fibre ribbon cable. Moreover, the polyester binder reduces plastic consumption in the optical fibre ribbon cable.

[0053] Although, the present disclosure has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the inventive aspects of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.


Claims

1. A method of creating an optical fibre ribbon (102) comprising:

arranging a plurality of optical fibres (104) in parallel to each other for creating the optical fibre ribbon (102), and

intermittently bonding the plurality of optical fibres (104) partially at specific intervals using a matrix material (106), wherein intermittent bonding of the plurality of optical fibres (104) is used for identification of each ribbon.


 
2. The method as claimed in claim 1, wherein the intermittent bonding is in a predefined pattern for identification of each ribbon.
 
3. The method as claimed in claim 1 or 2, wherein the intermittent bond is coloured as per colour code for identification of each ribbon.
 
4. The method as claimed in any preceding claim, wherein the predefined pattern of intermittent bond is in the form of text, wherein the text is visible from the plane perpendicular to axis of the optical fibre ribbon (102).
 
5. The method as claimed in any preceding claim, wherein the intermittent bonding is in the form of predefined pattern and colour code for identification.
 
6. The method as claimed in any preceding claim, wherein the matrix material (106) is fluorescent matrix material.
 
7. The method as claimed in any preceding claim, wherein intermittent bonding of the plurality of optical fibres (104) is intermittent in a plane perpendicular to axis of the optical fibre ribbon (102).
 
8. The method as claimed in any preceding claim, wherein intermittent bonding of the plurality of optical fibres (104) allows the optical fiber ribbon (102) to bend along preferential axis.
 
9. The method as claimed in any preceding claim, wherein the matrix material (106) of the optical fibre ribbon (102) is characterized by thickness in range of about 15 micron to 20 micron.
 
10. The method as claimed in any preceding claim, wherein the matrix material (106) of the optical fibre ribbon (102) is ultraviolet acrylate resin.
 
11. The method as recited in any preceding claim, further comprising binding a plurality of optical fibre ribbons with a polyester binder (602), wherein the polyester binder (602) is helically rotated over the plurality of optical fibre ribbons for grouping the plurality of optical fibre ribbons without using a buffer tube, wherein each of the plurality of optical fibre ribbons corresponds to the optical fibre ribbon (102).
 
12. The method as claimed in any preceding claim, further comprising binding a plurality of optical fibre ribbons with a polyester binder (602), wherein each of the plurality of optical fibre ribbons corresponds to the optical fibre ribbon (102), wherein the polyester binder (602) is a colored polyester binder.
 
13. An optical fibre ribbon (102) comprising:
a plurality of optical fibres (104), adjacent fibers of the plurality of optical fibres (104) being intermittently bonded along a length, wherein the adjacent fibers of the plurality of optical fibres (104) are intermittently bonded using a matrix material (106), intermittent bonds forming a predefined pattern on the optical fibre ribbon (102) for identification of each ribbon, wherein the predefined pattern in in a form of text.
 
14. The optical fibre ribbon (102) as claimed in claim 13, wherein the matrix material is coloured.
 
15. The optical fibre ribbon (102) as claimed in claim 13 or 14, wherein the matrix material (106) of the optical fibre ribbon (102) is ultraviolet acrylate resin.
 




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Search report