A fiber optic heterodyne detection processing system is devised to investigate the spectral property and the dynamic response of fluctuating optical waves propagating in an externally perturbed birefringent single-mode fiber. The correlation processing for the complex amplitudes of the excited and cross-coupled modes guided along the birefringent axes of the fiber is made by extracting the significant spectral components from a photocurrent spectrum. The spectral and dynamic characteristics for the guided modes are proved experimentally and theoretically for the axial and lateral vibrations of the fiber.
© 1990 Optical Society of America
Kazuhiko Oka, Satoshi Tanaka, and Yoshihiro Ohtsuka, "Spectral and dynamic characteristics for excited and coupled modes in an externally perturbed birefringent single-mode fiber," Appl. Opt. 29, 2223-2230 (1990)