Moon, Dae Seung Chung, Youngjoo Han, Young-Geun 2024-01-21T01:35:39Z 2024-01-21T01:35:39Z 2021-09-05 2007-01 0091-3286 https://pubs.kist.re.kr/handle/201004/134777 We propose a simple semiconductor optical amplifier-based fiber laser configuration for achieving multiwavelength oscillation at room temperature, in which a few-mode fiber Bragg grating was used as the wavelength-selective component. An amplitude variation of 0.8 dB over a 180-sec period was obtained for triple-wavelength oscillation at room temperature, which is more stable than that of erbium doped fiber (EDF)-based fiber laser with similar configuration. This multiwavelength laser can be switched between dual- and triple-wavelength operations by properly adjusting the polarization controller in the cavity. The lasing wavelength could be effectively tuned using the thermal heating method, and the output power variation was very small compared with that of the EDF-based fiber laser. This multiwavelength laser has the advantage of simple configuration, good stability, and wavelength tuning with small output power variation. (c) 2007 Society of Photo-Optical Instrumentation Engineers. English SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS ERBIUM-DOPED FIBER BRAGG GRATINGS CASCADED FIBER WAVELENGTH MULTIMODE WRITTEN Multiwavelength fiber laser based on semiconductor optical amplifier and few-mode fiber gratings Article 10.1117/1.2431357 1 OPTICAL ENGINEERING, v.46, no.1 OPTICAL ENGINEERING 46 1 scie scopus 000244064400012 2-s2.0-34247202050 Optics Optics Article ERBIUM-DOPED FIBER BRAGG GRATINGS CASCADED FIBER WAVELENGTH MULTIMODE WRITTEN multi-wavelength fiber laser fiber grating semiconductor optical amplifier