Wireless fiber laser sensor combining photonic generation beat frequency demodulation technology

Shengchun Liu; Rong Gu; Xiujuan Yu; Zuowei Yin; Xiangfei Chen

doi:10.1117/12.904625

29 November 2011 Wireless fiber laser sensor combining photonic generation beat frequency demodulation technology

Shengchun Liu, Rong Gu, Xiujuan Yu, Zuowei Yin, Xiangfei Chen

Proceedings Volume 8311, Optical Sensors and Biophotonics III; 83112D (2011) https://doi.org/10.1117/12.904625
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

A simple wireless-fiber laser sensor is proposed base on directly photonic generation of microwave beat signal. In this scheme, a multi-longitudinal modes fiber laser is formed by two fiber Bragg gratings and a section of erbium-doped fiber. Two same 2G-GSM mobile antennas are used as wireless transmitter and receiver. By this method, the real-time monitoring of fiber laser sensors can be achieved through over ultra-long distance. This technique offers a simple, all-electrical and cheap way for fiber sensor information accessing wireless net. The experiment result shows the root mean square deviations of the sensor are about 4.7 με and 6.7 με at 2.38 GHz before and after wireless transmission, respectively.

Citation Download Citation

Shengchun Liu, Rong Gu, Xiujuan Yu, Zuowei Yin, and Xiangfei Chen "Wireless fiber laser sensor combining photonic generation beat frequency demodulation technology", Proc. SPIE 8311, Optical Sensors and Biophotonics III, 83112D (29 November 2011); https://doi.org/10.1117/12.904625

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