Global Patent Index - EP 1088248 A1

EP 1088248 A1 2001-04-04 - DUAL TRANSMISSION BAND INTERFERENCE FILTER

Title (en)

DUAL TRANSMISSION BAND INTERFERENCE FILTER

Title (de)

DOPPELUEBERTRAGUNGSBAND-INTERFERENZFILTER

Title (fr)

FILTRE D'INTERFERENCE A BANDE DE TRANSMISSION DOUBLE

Publication

EP 1088248 A1 (EN)

Application

EP 00926004 A

Priority

  • US 0010072 W
  • US 13021299 P

Abstract (en)

[origin: WO0063728A1] A dual-band optical filter is disclosed which has two transmission bands. The first band is relatively narrow (about 1 nm) and encompases a wavelength of about 1550 nm, while the second band is relatively broad (greater than 50 nm) to transmit wavelengths in a range of 1300-1400 nm. Accordingly, the filter can be used in wavelength division multiplexed communication systems to simultaneously select a payload channel having a wavelength of approximately 1550 nm, and a 1310 nm service channel.

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

G02B 5/28

IPC 8 full level (invention and additional information)

G02B 5/28 (2006.01)

CPC (invention and additional information)

G02B 5/281 (2013.01)

Citation (search report)

See references of WO 0063728A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 0063728 A1 20001026; WO 0063728 A9 20020613; CA 2337223 A1 20001026; EP 1088248 A1 20010404

INPADOC legal status


2005-09-14 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20050315

2004-10-20 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040903

2004-05-12 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB IT

2001-04-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010115

2001-04-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE