Lasers, Fiber Optics, and Communications

Saturable absorber–based single-longitudinal mode tunable fiber laser using a Faraday rotator mirror as the rear cavity end

[+] Author Affiliations
Hsiang Wang

National Taiwan University of Science and Technology, Department of Electronic Engineering, No. 43, Section 4, Keelung Road, Taipei 106, Taiwan

Hung-Wen Chiu

Taipei Medical University, Graduate Institute of Biomedical Informatics, Taipei 110, Taiwan

Shien-Kuei Liaw

National Taiwan University of Science and Technology, Department of Electronic Engineering, No. 43, Section 4, Keelung Road, Taipei 106, Taiwan

Chin-Cheng Fan

National Taiwan University of Science and Technology, Department of Electronic Engineering, No. 43, Section 4, Keelung Road, Taipei 106, Taiwan

Opt. Eng. 53(11), 116108 (Nov 11, 2014). doi:10.1117/1.OE.53.11.116108
History: Received June 9, 2014; Revised October 10, 2014; Accepted October 13, 2014
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Abstract.  A single-longitudinal mode selection is realized in a linear-cavity tunable fiber laser constructed using a Faraday rotator mirror and a partial reflectance fiber Bragg grating as the cavity ends. At both tuning wavelengths of 1543.47 and 1557.52 nm, the measured optical signal-to-noise ratio is larger than 40 dB and a linewidth less than 1 MHz is obtained. It is based on the usage of a piece of gain fiber type saturable absorber as the mode filter. The pumping power efficiency is improved by 10% by recycling the residual pump power to the gain medium.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Hsiang Wang ; Hung-Wen Chiu ; Shien-Kuei Liaw and Chin-Cheng Fan
"Saturable absorber–based single-longitudinal mode tunable fiber laser using a Faraday rotator mirror as the rear cavity end", Opt. Eng. 53(11), 116108 (Nov 11, 2014). ; http://dx.doi.org/10.1117/1.OE.53.11.116108


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