FBG sensor system based on wavelength-swept active mode-locking laser with RSOA gain medium

Hyo-jin Kim; Hwi Don Lee; Myong Yung Jeong; Chang-Seok Kim; Ju Han Lee

doi:10.1117/12.885072

18 May 2011 FBG sensor system based on wavelength-swept active mode-locking laser with RSOA gain medium

Hyo-jin Kim, Hwi Don Lee, Myong Yung Jeong, Chang-Seok Kim, Ju Han Lee

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77538T (2011) https://doi.org/10.1117/12.885072
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

We performed an experiment of wavelength-swept laser based on active mode-locking on reflective semiconductor optical amplifier (RSOA). Since this laser does not have a wavelength-selecting filter, it can achieve a high sweeping speed and reduce the component cost and size. Compared to the conventional SOA gain medium, RSOA shows a merit of higher efficiency of cross gain modulation due to the twice propagation of active gain region. We applied this laser to Fiber Bragg grating (FBG) strain sensor system which can have faster data acquisition speed than conventional wavelength-swept laser method. The linear response of FBG peak for the applied strain is monitored using the proposed laser source.

Citation Download Citation

Hyo-jin Kim, Hwi Don Lee, Myong Yung Jeong, Chang-Seok Kim, and Ju Han Lee "FBG sensor system based on wavelength-swept active mode-locking laser with RSOA gain medium", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77538T (18 May 2011); https://doi.org/10.1117/12.885072

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KEYWORDS

Fiber Bragg gratings

Sensors

Signal detection

Fiber lasers

Mode locking

Modulation

Optical filters

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