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Optical heterodyne processing method of mechanically induced phase fluctuations of guided modes in a birefringent single-mode fiber

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3 Author(s)
Tanaka, S. ; Dept. of Eng., Hokkaido Univ., Sapporo, Japan ; Oka, K. ; Ohtsuka, Y.

A method is described for carrying out statistical processing of the individual phases of all the modes guided in a perturbed birefringent single-mode fiber. The method is based on optical heterodyne detection processes using a signal beam with orthogonal linearly polarized two-frequency components and a local oscillator beam. All the time-varying phases of the guided modes are taken out separately and processed to offer their power spectra and correlation functions from which the phase fluctuations can be evaluated statistically

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Lightwave Technology, Journal of  (Volume:9 ,  Issue: 1 )