Title :
Strain birefringence in single-polarisation germanosilicate optical fibres
Author :
Kaminow, I.P. ; Simpson, J.R. ; Presby, H.M. ; MacChesney, J.B.
Author_Institution :
Bell Laboratories, Crawford Hill Laboratory, Holmdel, USA
Abstract :
Fibres that maintain a fundamental mode with fixed polarisation can be realised by the introduction of a large strain birefringence. A modal birefringence of 3 × 10¿4 was achieved by differential thermal expansion in a germanosilicate fibre prepared from a circular preform by the exposed-cladding technique. Measurements of birefringence agree with earlier calculations.
Keywords :
mechanical birefringence; optical fibres; differential thermal expansion; exposed cladding technique; fundamental mode; modal birefringence; single polarisation germanosilicate optical fibres; strain birefringence;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19790481
