Short length Lyot filter utilized in dual-wavelength and wavelength tunable mode-locked fiber laser generation

TL;DR

This paper demonstrates a simple fiber laser setup using a short Lyot filter to achieve dual-wavelength and tunable mode-locked laser output from a single cavity, with potential applications in various optical systems.

Contribution

It introduces a novel use of a short Lyot filter in a single cavity to generate dual-wavelength and tunable mode-locked fiber laser outputs, which was not previously reported.

Findings

Dual-wavelength laser at 1540 nm and 1564 nm

Tunable range of about 32 nm

Single cavity configuration simplifies the setup

Abstract

Dual-wavelength mode-locked fiber laser and wavelength tunable mode-locked fiber laser have emerged as a promising light source. However, there is few reports on generating these two output from just one laser cavity. In this report, we demonstrate a dual-wavelength and wavelength tunable mode-locked fiber laser output from one laser cavity by utilizing short length Lyot filter. The central wavelengths of dual-wavelength mode-locked fiber laser are 1540 nm and 1564 nm and the tunable laser range is about 32 nm. We believe it could provide a simple set-up for generating dual-wavelength and wavelength tunable mode-locked output from one laser cavity.