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Dual-wavelength EDF laser outputing six kinds of different lasing lines

JIANQUN CHENG1,*

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 Optoelectr

Abstract

A novel switchable dual-wavelength erbium-doped fiber laser using a linear cavity structure was proposed and experimentally demonstrated. Cavity mirrors of this laser consisted of two Sagnac loops. The left loop consisted of a 3 dB fiber coupler (FC), a three-rings type of polarization controller (PC) and a phase shifted fiber grating. The right loop consisted of other same 3 dB FC and a length of 2 m panda-type polarization-maintaining fiber. The two loops became two comb filters to jointly produce the multi-wavelength output. After the PC was adjusted slowly, the laser could switch flexibly to output six kinds of different lasing lines. All of lasing lines had a narrow linewidth less than 1.12 nm and the optical signal-to-noise ratio of more than 37 dB..

Keywords

Erbium-doped fiber laser, Phase shifted fiber grating, Polarization-maintaining fiber.

Submitted at: March 29, 2022
Accepted at: Feb. 14, 2023

Citation

JIANQUN CHENG, Dual-wavelength EDF laser outputing six kinds of different lasing lines, Journal of Optoelectronics and Advanced Materials Vol. 25, Iss. 1-2, pp. 10-13 (2023)