Global Patent Index - EP 1012646 A1

EP 1012646 A1 2000-06-28 - METHOD AND APPARATUS FOR COMBINING ADD/DROP OPTICAL SIGNAL LINES FROM A PLURALITY OF BRANCHING UNITS

Title (en)

METHOD AND APPARATUS FOR COMBINING ADD/DROP OPTICAL SIGNAL LINES FROM A PLURALITY OF BRANCHING UNITS

Title (de)

VERFAHREN UND VORRICHTUNG ZUM VEREINIGEN VON OPTISCHEN EINFÜGE-/AUSBLENDSIGNALLEITUNGEN AUS EINER VIELZAHL VON VERZWEIGUNGSEINHEITEN

Title (fr)

PROCEDE ET APPAREIL POUR COMBINER DES LIGNES DE SIGNAUX OPTIQUES A INSERTION/EXTRACTION EN PROVENANCE DE PLUSIEURS UNITES DE DERIVATION

Publication

EP 1012646 A1 (EN)

Application

EP 97910697 A

Priority

  • US 9715738 W
  • US 72859196 A

Abstract (en)

[origin: WO9815861A1] An optical signal processing method and apparatus for combining the add/drop lines for multiple add/drop multiplexers (ADMs) (58, 60, 62) into a single pair of add/drop lines (54, 56), comprising a plurality of optical fiber trunks (42, 44, 46, 48, 50, 52) for carrying trunk traffic, a plurality of branching units (58, 60, 62), each attached to one of the fiber trunks, and each having an add and drop port, a fiber grating (472) in each branching unit for passing the branch traffic from the add port to the drop port of each of the branching units, and a single fiber pair connecting the branching units for carrying branch traffic between the branching units.

IPC 1-7 (main, further and additional classification)

G02B 6/293; H04J 14/02

IPC 8 full level (invention and additional information)

G02B 6/293 (2006.01); G02B 6/34 (2006.01); H04B 10/02 (2006.01); H04J 14/00 (2006.01); H04J 14/02 (2006.01); H04Q 3/52 (2006.01)

CPC (invention and additional information)

G02B 6/2932 (2013.01); G02B 6/29383 (2013.01); H04J 14/0201 (2013.01); H04J 14/0206 (2013.01); H04J 14/0213 (2013.01); H04J 14/0217 (2013.01); H04J 14/0219 (2013.01)

Citation (search report)

See references of WO 9815861A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 9815861 A1 19980416; AU 4799897 A 19980505; CA 2267779 A1 19980416; EP 1012646 A1 20000628; JP 2001505728 A 20010424; JP 4105233 B2 20080625; TW 357504 B 19990501

INPADOC legal status


2003-11-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030502

2000-06-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990507

2000-06-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT