Single-longitudinal-mode erbium-doped fiber laser based on a fiber Bragg grating Fabry-Perot filter |
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| Authors: | D Chen H Fu W Liu |
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| Institution: | (1) Center for Optical and Electromagnetic Research, East Building no. 5, Zijingang Campus, Zhejiang University, Hangzhou, 310058, China;(2) Joint Research Center of Photonics of the Royal Institute of Technology (Sweden) and Zhejiang University, Zijingang Campus, Hangzhou, 310058, China |
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| Abstract: | A novel single-longitudinal-mode (SLM) erbium-doped fiber laser with a simple linear cavity based on a fiber Bragg grating Fabry-Perot filter (FBG-FPF) and a narrowband (～0.06 nm) FBG is proposed and demonstrated experimentally. Two uniform FBGs form the FBG-FPF, which has two ultranarrow transmission bands with a bandwidth of 0.12 pm and a wavelength spacing of 0.095 nm. By slightly tuning the central wavelength of the narrowband FBG, SLM lasing at 1549.658 or 1549.563 nm (corresponding to the two transmission peaks of the FBG-FPF) is achieved with a laser output power of ～4 mW, when the pump power is ～75 mW. |
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