All-fiber actively Q-switched fiber laser tuned by a pair of temperature controlled fiber Bragg gratings |
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Authors: | Fang-Wen Sheu Jung-Jui Kang |
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Affiliation: | a Department of Applied Physics, National Chiayi University, Chiayi 60004, Taiwan b Institute of Electro-Optical Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan |
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Abstract: | We report an all-fiber actively Q-switched erbium-doped fiber laser, where the linear laser cavity mirrors are composed of two fiber Bragg gratings (FBGs). The laser oscillation wavelength could be tuned by this pair of temperature controlled FBGs. The Q-switching is achieved by an all-fiber phase modulation device. Using this system, we could obtain stable Q-switched laser pulses output, which could be optimized by tuning the reflection wavelengths of the two FBGs to be adjacent to each other. Instead of being modulated by the FBG filter in high-speed oscillation, this fiber laser system is operating in the Q-switched regime using an all-fiber phase modulator, producing a more stable laser output spectrum. |
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Keywords: | 42.55.Wd 42.60.Gd 42.81.Wg 42.60.By |
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