Switchable dual-wavelength erbium-doped fiber laser based on the broadband filtering performance of tapered long period fiber gratings

Abstract

In this paper, a switchable, dual-wavelength erbium-doped fiber laser, based on the broadband filtering performance of a tapered long-period fiber grating, is experimentally demonstrated. The lasing emission can be built up in sets of dual-wavelengths in the entire C-band, with variable and controllable separation between laser lines from 6.75 nm to 35 nm when the optical fiber filter structure is gradually bent.

Erbium-doped fiber laser with switchable wavelength generation based on tunable filter and dual-pass mach-zehnder filter incorporated with fiber delay line

“…Additionally, the SMSR was greater than 30 dB and the power shift was less than 1.93 dB [10]. Nunez-Gomez et al reported a dual-wavelength EDFL using a tapered longperiod fiber grating-based broadband comb filter, and the laser lines were tuned during 35 nm range [11]. Cheng et al reported a switchable triple-wavelength linear cavity EDFL using a fiber grating and interleaver.…”

Switchable and tunable linear cavity erbium-doped fiber laser based on FBGs embedded in Sagnac rings

“…In 2021, Nuñez-Gomez et al reported a switchable dual-wavelength EDFL based on the broadband filtering performance of a tapered long-period fiber grating. By changing the curvature of the optical fiber filter, a tunable dual-wavelength range can be achieved, and the maximum tuning range is 28.5 nm [20].…”