Semiconductor optical amplifier-based laser with 25 km long cavity length utilizing sagnac fiber ring structure |
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| Authors: | C H Yeh C W Chow |
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| Institution: | 1. Information and Communications Research Laboratories, Industrial Technology Research Institute (ITRI), Hsinchu, 31040, Taiwan
2. Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan
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| Abstract: | In the investigation, we propose and demonstrate a Sagnac ring based fiber laser structure using a semiconductor optical amplifier (SOA) to act as a gain medium with short to long fiber cavity lengths for wavelength lasing and tuning. Here, ten fiber Bragg gratings (FBGs) with different reflected Bragg wave-lengths are used serving as the reflected element in the proposed laser configuration for wavelength lasing and remote sensing simultaneously. Furthermore, the different cavity fiber lengths of a few ten m to 25 km, which are used in the proposed laser scheme, has been analyzed and discussed. |
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