Comprehensive study on the parameters affecting the line-width and stability of SOA-based SLM random fiber laser

Heba A. Shawki; Hussein E. Kotb; Diaa Khalil

doi:10.1117/12.2542661

21 February 2020 Comprehensive study on the parameters affecting the line-width and stability of SOA-based SLM random fiber laser

Heba A. Shawki, Hussein E. Kotb, Diaa Khalil

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Proceedings Volume 11260, Fiber Lasers XVII: Technology and Systems; 1126028 (2020) https://doi.org/10.1117/12.2542661
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

We report several techniques affecting line-width and long-term stability of single longitudinal mode (SLM) random fiber laser (RFL) based on Rayleigh backscattering in a standard single mode fiber as distributed mirrors, and a semiconductor optical amplifier (SOA) as the gain medium. Three parameters were investigated; single mode fiber (SMF) length, the optical filter bandwidth, and the type of the cavity reflecting mirror. Line-width of the laser was measured at three values of SMF length; 100 m, 1 km, and 2 km. Impact of the optical filter bandwidth on the laser line-width was studied. Finally, long-term stability was characterized for two types of reflecting mirrors; a silver coated mirror, and a Faraday rotating mirror (FRM).

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Heba A. Shawki, Hussein E. Kotb, and Diaa Khalil "Comprehensive study on the parameters affecting the line-width and stability of SOA-based SLM random fiber laser", Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 1126028 (21 February 2020); https://doi.org/10.1117/12.2542661

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KEYWORDS

Optical filters

Single mode fibers

Mirrors

Fiber lasers

Spatial light modulators

Laser scattering

Silver

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