Fiber optic remote sensor based on laser powering and liquid-crystal-based optical modulator

Yosuke Tanaka; Sayuri Sugano; Muneyuki Nakagawa; Tatsutoshi Shioda; Takashi Kurokawa; Toshiharu Fukuoka; Kazuyuki Ueta

doi:10.1117/12.623792

23 May 2005 Fiber optic remote sensor based on laser powering and liquid-crystal-based optical modulator

Yosuke Tanaka, Sayuri Sugano, Muneyuki Nakagawa, Tatsutoshi Shioda, Takashi Kurokawa, Toshiharu Fukuoka, Kazuyuki Ueta

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623792
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

This paper demonstrates a novel fiber optic remote sensing system based on laser powering and a liquid-crystal optical modulator that transforms electrical signal of sensors into optical with low power consumption. A basic experiment for confirming the principle was conducted using a standard communication-grade semiconductor laser with the output of less than 20 mW both for laser powering and for sensor signal transmission. The sensor signal was transferred through 5-km-long optical fiber and detected with On/Off ratio of more than 15 dB.

Citation Download Citation

Yosuke Tanaka, Sayuri Sugano, Muneyuki Nakagawa, Tatsutoshi Shioda, Takashi Kurokawa, Toshiharu Fukuoka, and Kazuyuki Ueta "Fiber optic remote sensor based on laser powering and liquid-crystal-based optical modulator", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623792

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