Abstract
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
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