Abstract
A novel triple-wavelength erbium-doped fiber laser employing linear cavity structure was presented and demonstrated
experimentally. Cavity mirrors of the laser were composed of two left and right Sagnac loops. Left loop was formed by a fiber
coupler (FC) with power ratio of 50:50, a sampled fiber grating (SFG) and a three-ring-type polarization controller (PC). Two
adjacent transmission peaks of the SFG had 0.3 nm wavelength spacing. Right loop consisted of a same FC and a length of
panda-type polarization-maintaining fiber (PMF). The two loops had different transmission spectra. They formed a couple of
comb filters to mutually produce the multiple wavelengths. After the PC was tuned to cause the PHB effect, the laser could
output three kinds of different lasing lines including single-wavelength, dual-wavelength, and triple-wavelength. All of lasing
lines had more than 33 dB optical signal-noise-ratio and less than 0.67 nm linewidth.
Keywords
Erbium-doped fiber laser, Sampled fiber grating, Polarization-maintaining fiber.
Citation
JIANQUN CHENG, BINGFENG FAN, WEICHENG CHEN, ZHIKUN SU, Triple-wavelength EDF laser employing sampled fiber grating and PMF, Optoelectronics and Advanced Materials - Rapid Communications, 16, 7-8, July-August 2022, pp.277-280 (2022).
Submitted at: Feb. 24, 2022
Accepted at: Aug. 10, 2022