Title :
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
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;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900838
