期刊
IEEE PHOTONICS JOURNAL
卷 14, 期 1, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOT.2022.3147793
关键词
Optical fiber polarization; Fiber lasers; Optical fibers; Sagnac interferometers; Optical fiber communication; Optical fiber dispersion; Couplers; Multi-wavelength fiber laser; photonic crystal fiber; Sagnac loop mirror; NPR
资金
- National Natural Science Foundation of China [61620106014, 61827818]
A multi-wavelength thulium-doped fiber laser with a photonic crystal fiber Sagnac loop is experimentally demonstrated. By utilizing nonlinear polarization rotation and adjusting polarization controllers, stable wavelength outputs are achieved at room temperature.
A multi-wavelength thulium-doped fiber laser incorporating a photonic crystal fiber (PCF) Sagnac loop was presented and experimentally demonstrated. In the laser cavity, the Sagnac loop mirror used a 0.5 m PCF as a comb filter. A nonlinear polarization rotation (NPR)-based 600 m single-mode fiber (SMF) was used to suppress the mode competition. By adjusting the polarization controllers (PCs), up to nine stable wavelength outputs near the 2 mu m spectrum were obtained at room temperature with an optical signal-to-noise ratio (OSNR) of up to 30 dB. The channel spacing of this fiber laser is 4.88 nm, and the 10 dB bandwidth encompasses 1950.39 to 1989.43 nm.
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