Title :
Birefringence in single-mode optical fiber due to elliptical core deformation and stress anisotropy
Author :
Imoto, Nobuyuki ; Yoshizawa, Nobuyuki ; Sakai, Jun-ichi ; Tsuchiya, Haruhiko
Author_Institution :
Nippon Telegraph and Telephne Public Corp., Musashino, Tokyo, Japan
fDate :
11/1/1980 12:00:00 AM
Abstract :
A formula for the difference between propagation constants of two polarization modes caused by elliptical core deformation and stress anisotropy is given for single-mode optical fibers. Birefringence in circular and elliptical core fibers subject to an externally applied uniaxial pressure are measured. Birefringence caused by elliptical core deformation and stress anisotropy are experimentally separated by measuring their wavelength dependences. A value of

cm
2/gram weight (gw) (=

m
2/N) is obtained for the stress-optical constant of silica fibers. Residual stress corresponding to external pressure of 240 gw/cm is observed for a fiber with 0.35 core ellipticity.
Keywords :
Optical fiber mechanical factors; Optical refraction; Anisotropic magnetoresistance; Birefringence; Optical fiber polarization; Optical fibers; Pressure measurement; Propagation constant; Residual stresses; Silicon compounds; Stress measurement; Wavelength measurement;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.1980.1070382