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Wavelength-switchable erbium-doped fiber ring laser combined with a Fabry-Perot laser diode and a sampled grating
Authors:Ryun Kyung Kim  Kwang No Park  Kyung Shik Lee
Institution:a School of Information and Communication Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
b Department of Optical Engineering, Sejong University, Seoul 143-747, Republic of Korea
Abstract:We present a wavelength-switchable erbium-doped fiber ring laser consisting of an anti-reflection coated Fabry-Perot laser diode (FP-LD) and a sampled fiber Bragg grating (SFBG). The wavelength switching is obtained easily by the shift of FP mode with respect to the reflection peaks of the SFBG. The proposed laser apparatus not only simultaneously emits two wavelengths but also switches between the two wavelengths by adjusting the modes of FP-LD with a change of the injection current of the FP-LD as little as ∼1 mA. The proposed wavelength-switchable erbium-doped fiber ring laser exhibits high laser performance with side-mode suppression ratio (SMSR) ?50 dB.
Keywords:Erbium-doped fiber  Fabry-Perot laser diode  Sampled fiber Bragg grating  Fiber ring laser  Side-mode suppression ratio
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