Kelly sideband suppression and wavelength tuning of a conventional soliton in a tm-doped hybrid mode-locked fiber laser with an all-fiber lyot filter

Jianfeng Li*, Yazhou Wang, Hongyu Luo, Yong Liu, Zhijun Yan, Zhongyuan Sun, Lin Zhang

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We demonstrate a stable conventional soliton in a Tm-doped hybrid mode-locked fiber laser by employing a homemade all-fiber Lyot filter (AFLF) and a single-wall carbon nanotube. The AFLF, designed by sandwiching a piece of polarization-maintained fiber (PMF) with two 45° tilted fiber gratings inscribed by a UV laser in PMF with a phase-mask scanning technique, shows large filter depth of ∼9 dBand small insertion loss of ∼0.8 dB.By optimizing the free spectral range of the AFLF, the Kelly sidebands of a conventional soliton centered at 1966.4 nm can be dramatically suppressed without impairing the main shape of the soliton spectrum. It gives the pulse duration of 1.18 ps and bandwidth of 3.8 nm. By adjusting the temperature of the PMF of the AFLF from 7°Cto60°C, wavelength tunable soliton pulses ranging from 1971.62 nm to 1952.63 nm are also obtained. The generated soliton pulses can be precisely tuned between 1971.62 nm and 1952.63 nm by controlling the temperature of the AFLF.

Original languageEnglish
Pages (from-to)103-109
Number of pages7
JournalPhotonics Research
Volume7
Issue number2
Early online date20 Nov 2018
DOIs
Publication statusPublished - 7 Jan 2019

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