Wavelength-Switchable Ytterbium-Doped Mode-Locked Fiber Laser Based on a Vernier Effect Filter

Xu, Hailong; Zhang, Liqiang; Li, Xiangdong; Li, Jiaxin; Liu, Yuanzhen; Yao, Yicun; Wang, Minghong

doi:10.3390/mi15111289

Open AccessArticle

Wavelength-Switchable Ytterbium-Doped Mode-Locked Fiber Laser Based on a Vernier Effect Filter

by

Hailong Xu

,

Liqiang Zhang

^*

,

Xiangdong Li

,

Jiaxin Li

,

Yuanzhen Liu

,

Yicun Yao

and

Minghong Wang

^*

School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252000, China

^*

Authors to whom correspondence should be addressed.

Micromachines 2024, 15(11), 1289; https://doi.org/10.3390/mi15111289

Submission received: 30 September 2024 / Revised: 17 October 2024 / Accepted: 21 October 2024 / Published: 23 October 2024

(This article belongs to the Special Issue High Power Fiber Laser Technology)

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Abstract

A wavelength-switchable ytterbium-doped mode-locked fiber laser is reported in this article. Two Mach–Zehnder interferometers (MZIs, denoted as MZI1, MZI2) with close free spectral ranges (FSRs) are connected in series to form a Vernier effect sensor. By utilizing the filtering effect of the Vernier effect sensor, the wavelength-switchable output of an ytterbium-doped mode-locked fiber laser is realized. When the 3 dB bandwidth of the Vernier effect filter is set to be 5.31 nm around 1073.42 nm, stable dissipative solitons are obtained. Stretching MZI1 horizontally, the central wavelengths of the pulses can be switched among 1073.42 nm, 1055.38 nm, and 1036.22 nm, with a total tunable central wavelength range of 37.2 nm. When the 3 dB bandwidth of the Vernier effect filter is set to be 4.07 nm, stable amplifier similaritons are obtained. Stretching MZI1 horizontally, the central wavelengths of the pulses are switchable among 1072.71 nm, 1060.15 nm, 1048.92 nm, and 1037.26 nm, with a total tunable central wavelength range of 35.15 nm. Compared with traditional fiber interference filters, the Vernier effect filter has a higher sensitivity, making wavelength switching more convenient and providing a wider tuning range for the ytterbium-doped mode-locked fiber laser.

Keywords: passively mode-locked fiber laser; Vernier effect; nonlinear polarization rotation; Mach–Zehnder interferometer; wavelength switchable

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MDPI and ACS Style

Xu, H.; Zhang, L.; Li, X.; Li, J.; Liu, Y.; Yao, Y.; Wang, M. Wavelength-Switchable Ytterbium-Doped Mode-Locked Fiber Laser Based on a Vernier Effect Filter. Micromachines 2024, 15, 1289. https://doi.org/10.3390/mi15111289

AMA Style

Xu H, Zhang L, Li X, Li J, Liu Y, Yao Y, Wang M. Wavelength-Switchable Ytterbium-Doped Mode-Locked Fiber Laser Based on a Vernier Effect Filter. Micromachines. 2024; 15(11):1289. https://doi.org/10.3390/mi15111289

Chicago/Turabian Style

Xu, Hailong, Liqiang Zhang, Xiangdong Li, Jiaxin Li, Yuanzhen Liu, Yicun Yao, and Minghong Wang. 2024. "Wavelength-Switchable Ytterbium-Doped Mode-Locked Fiber Laser Based on a Vernier Effect Filter" Micromachines 15, no. 11: 1289. https://doi.org/10.3390/mi15111289

APA Style

Xu, H., Zhang, L., Li, X., Li, J., Liu, Y., Yao, Y., & Wang, M. (2024). Wavelength-Switchable Ytterbium-Doped Mode-Locked Fiber Laser Based on a Vernier Effect Filter. Micromachines, 15(11), 1289. https://doi.org/10.3390/mi15111289

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Wavelength-Switchable Ytterbium-Doped Mode-Locked Fiber Laser Based on a Vernier Effect Filter

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