All-fibre optical hybrid for coherent polarisation diversity receivers

Author

Delavaux, J.-M.P. ; Park, Y.K. ; Barski, S. ; Lefevre, H. ; Failes, M. ; Warner, C.

Author_Institution

AT&T Bell Labs., Solid State Technol. Center, Breinigsville, PA, USA

Volume

26

Issue

16

fYear

1990

Firstpage

1303

Lastpage

1305

Abstract

The design, fabrication and characterisation of an all polarisation maintaining fibre coherent hybrid at lambda =1.55 mu m utilising a polarisation splitter coupler and a 3 dB coupler tree is reported. The compact packaged coupler-based hybrid exhibits low excess insertion loss (less than 0.6 dB), wide operation-bandwidth (greater than 100 nm) and high polarisation crosstalk ratio. Stable operation of the hybrid functions has been demonstrated in a polarisation diversity configuration transmission system experiment at 1.7 Gbit/s and 2.5 Gbit/s, with receiver sensitivities of -42 and -38 dBm, respectively.

Keywords

crosstalk; diversity reception; fibre optics; optical communication equipment; optical losses; receivers; 0.6 dB; 1.55 micron; 1.7 Gbit/s; 2.5 Gbit/s; all fibre optical hybrids; characterisation; coherent polarisation diversity receivers; compact packaged coupler-based hybrid; coupler tree; design; fabrication; insertion loss; operation-bandwidth; optical receivers; polarisation crosstalk ratio; polarisation diversity; polarisation maintaining fibre coherent hybrid; polarisation splitter coupler; receiver sensitivities; stable operation; transmission system experiment;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19900838

Filename

130948