Polarization-selective phase modulator: a potential component for interferometric fiber optical sensors?

Raoul Stubbe; Gunnar N.E. Edwall; Bengt Sahlgren; Lars Svahn; Per Granestrand; Lars Thylen

doi:10.1117/12.20310

1 August 1990 Polarization-selective phase modulator: a potential component for interferometric fiber optical sensors?

Raoul Stubbe, Gunnar N.E. Edwall, Bengt Sahlgren, Lars Svahn, Per Granestrand, Lars Thylen

Proceedings Volume 1267, Fiber Optic Sensors IV; (1990) https://doi.org/10.1117/12.20310
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

This paper discusses the potential use of polarisation selective phase modulators, PSPM, in interferometric fiber optical sensors. The principle of the PSPM is shortly reviewed. Two examples of the usefulness ofpolarisation selective phase modulation will be given. The first showing that PSPM introduces a possibility to monitor two measurands, simultaneously, with the same interferometer. In the second, a more detailed look at the consequences of using this concept in fiber optical gyros wiibe presented. A formula is derived describing the suppression ofnoise due to polarisation coupling in the gyro fiber loop. Using a special modulation and detection scheme, the PSPM shows to reduce the noise with the same order of magnitude as a polarizer.

Citation Download Citation

Raoul Stubbe, Gunnar N.E. Edwall, Bengt Sahlgren, Lars Svahn, Per Granestrand, and Lars Thylen "Polarization-selective phase modulator: a potential component for interferometric fiber optical sensors?", Proc. SPIE 1267, Fiber Optic Sensors IV, (1 August 1990); https://doi.org/10.1117/12.20310

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