Global Patent Index - EP 1145056 A2

EP 1145056 A2 20011017 - CIRCULARLY POLARIZED FIBER IN OPTICAL CIRCUITS

Title (en)

CIRCULARLY POLARIZED FIBER IN OPTICAL CIRCUITS

Title (de)

ZIRKULAR POLARISIERTE LICHTLEITFASER IN OPTISCHEN SCHALTUNGEN

Title (fr)

FIBRE A POLARISATION CIRCULAIRE POUR CIRCUITS OPTIQUES

Publication

EP 1145056 A2 20011017 (EN)

Application

EP 99948142 A 19990907

Priority

  • US 9920473 W 19990907
  • US 10075798 P 19980917

Abstract (en)

[origin: WO0016139A2] The invention is directed to circularly polarized single mode waveguide fiber and to high data rate, multiplexed transmission systems that employ this fiber. The circularly polarized waveguide fiber attenuates the non-linear effects present in such high performance transmission links. In particular, self phase modulation is attenuated by more than 30 % and four wave mixing is essentially eliminated. This latter effect occurs because four wave mixing does not occur when a multiplexed link is made of a plurality of circularly polarized waveguide fibers which are arranged so that adjacent fibers have opposite circular polarization. The circularly polarized fiber enhances the non-linear effect of cross phase modulation, a feature that can be used in optical switching components associated with the transmission link. In addition, the strength of the XPM in CPF is independent of the relative polarization states of the signal and control pulses.

IPC 1-7

G02B 6/10; G02F 1/35; H04J 14/02

IPC 8 full level

G02B 6/02 (2006.01); G02B 6/024 (2006.01); G02B 6/10 (2006.01); G02F 1/365 (2006.01); H04B 10/135 (2006.01); H04B 10/16 (2006.01); H04B 10/17 (2006.01); H04B 10/18 (2006.01); H04B 10/2543 (2013.01); H04B 10/532 (2013.01); H04J 14/02 (2006.01); H04J 14/06 (2006.01)

CPC (source: EP)

G02B 6/105 (2013.01); H04B 10/2543 (2013.01); H04B 10/532 (2013.01); H04J 14/02 (2013.01); H04J 14/06 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

WO 0016139 A2 20000323; WO 0016139 A3 20011122; AU 6137899 A 20000403; CA 2344682 A1 20000323; CN 1406342 A 20030326; EP 1145056 A2 20011017; EP 1145056 A3 20020911; JP 2002525647 A 20020813; TW 459148 B 20011011

DOCDB simple family (application)

US 9920473 W 19990907; AU 6137899 A 19990907; CA 2344682 A 19990907; CN 99810833 A 19990907; EP 99948142 A 19990907; JP 2000570619 A 19990907; TW 88119811 A 19991109