Han, Young-Geun Kim, Chul Han Lee, Sang Bae 2024-01-21T01:31:42Z 2024-01-21T01:31:42Z 2021-09-04 2007-03 0091-3286 https://pubs.kist.re.kr/handle/201004/134613 We have experimentally investigated a stably tunable multiwavelength erbium- doped fiber ring laser based on phase modulation of a semiconductor optical amplifier with lasing wavelength and spacing tunability at room temperature. Stable multiwavelength operation is obtained by direct modulation of the bias current in the amplifier. We demonstrate such a laser incorporating a tunable Lyot-Sagnac filter with two segments of polarization-maintaining fibers with wavelength-spacing and lasing wavelength tunability. We successfully achieved 1.0-nm-spacing eight-channel and 0.8-nm-spacing ten-channel lasing wavelengths at room temperature. The lasing wavelength of the laser can be also controlled by a polarization controller. (C) 2007 Society of Photo-Optical Instrumentation Engineers. English SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS OPERATION GRATINGS NM Room-temperature multiwavelength erbium-doped fiber ring laser based on phase modulation of semiconductor optical amplifier with lasing-wavelength and spacing tunability Article 10.1117/1.2432892 1 OPTICAL ENGINEERING, v.46, no.3 OPTICAL ENGINEERING 46 3 scie scopus 000246351400011 2-s2.0-34447271755 Optics Optics Article OPERATION GRATINGS NM multiwavelength fiber laser tunable laser Lyot-Sagnac filter semiconductor optical amplifier phase modulation