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Proceedings Paper

New methods of multimode fiber interferometer signal processing
Author(s): Oleg B. Vitrik; Yuri N. Kulchin; Oleg G. Maxaev; Oleg V. Kirichenko; Oleg T. Kamenev; Yuri S. Petrov
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Paper Abstract

New methods of multimode fiber interferometers signal processing are suggested. For scheme of single fiber multimode interferometers with two excited modes, the method based on using of special fiber unit is developed. This unit provides the modes interaction and further sum optical field filtering. As a result the amplitude of output signal is modulated by external influence on interferometer. The stabilization of interferometer sensitivity is achieved by using additional special modulation of output signal. For scheme of single fiber multimode interferometers with excitation of wide mode spectrum, the signal of intermode interference is registered by photodiode matrix and then special electronic unit performs correlation processing. For elimination of temperature destabilization, the registered signal is adopted to multimode interferometers optical signal temperature changes. The achieved parameters for double mode scheme: temporary stability--0.6% per hour, sensitivity to interferometer length deviations--3,2 nm; for multimode scheme: temperature stability--(0.5%)/(K), temporary nonstability--0.2% per hour, sensitivity to interferometer length deviations--20 nm, dynamic range--35 dB.

Paper Details

Date Published: 14 June 1995
PDF: 7 pages
Proc. SPIE 2544, Interferometry VII: Techniques and Analysis, (14 June 1995); doi: 10.1117/12.211854
Show Author Affiliations
Oleg B. Vitrik, Far Eastern State Technical Univ. (Russia)
Yuri N. Kulchin, Far Eastern State Technical Univ. (Russia)
Oleg G. Maxaev, Far Eastern State Technical Univ. (Russia)
Oleg V. Kirichenko, Far Eastern State Technical Univ. (Russia)
Oleg T. Kamenev, Far Eastern State Technical Univ. (Russia)
Yuri S. Petrov, Far Eastern State Technical Univ. (Russia)


Published in SPIE Proceedings Vol. 2544:
Interferometry VII: Techniques and Analysis
Malgorzata Kujawinska; Ryszard J. Pryputniewicz; Mitsuo Takeda, Editor(s)

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