title: Spectral and dynamic characteristics for excited and coupled modes in an externally perturbed birefringent single-mode fiber.
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 singlemode 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.
authors.forename: K
authors.initials: K
authors.lastname: Oka
authors.forename: S
authors.initials: S
authors.lastname: Tanaka
authors.forename: Y
authors.initials: Y
authors.lastname: Ohtsuka