Title :
8 km-long polarisation-maintaining fibre with highly stable polarisation state
Author :
Sasaki, Yutaka ; Hosaka, Tatsuya ; Takada, Kazumasa ; Noda, J.
Author_Institution :
NTT Ibaraki Electrical Communication Laboratory, Tokai, Japan
Abstract :
A new preform fabrication technique for realising long lengths of polarisation-maintaining optical fibres is described. The technique is shown to produce stress-induced birefringent fibres with symmetry and uniformity along the length in the stress-applying parts. The resultant 8.3 km-long fibre whose relative refractive-index difference is 0.6% has been obtained with a crosstalk of ¿23 dB at 1.15 ¿m wavelength, where the loss is 1.7 dB/km.
Keywords :
light polarisation; optical fibres; optical workshop techniques; 1.15 micron wavelength; 8 km-long fibre; crosstalk; highly stable polarisation state; polarisation-maintaining optical fibres; preform fabrication technique; relative refractive-index difference; stress-induced birefringent fibres;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830540
