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Triple-wavelength EDF laser employing sampled fiber grating and PMF

JIANQUN CHENG1,* , BINGFENG FAN1, WEICHENG CHEN1, ZHIKUN SU1

Affiliation

  1. Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology and Guangdong Provincial Key Laboratory of Semiconductor Micro Display, School of Physics and Optoelec

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