Yb-Doped Mode-Locked Fiber Laser Based on an All-Fiber Interferometer Filter

Fan Yang; Liqiang Zhang; Chenglin Bai; Shijie Ren; Zhen Tian; Yicun Yao; Minghong Wang

doi:10.3390/photonics10020203

Photonics (Feb 2023)

Yb-Doped Mode-Locked Fiber Laser Based on an All-Fiber Interferometer Filter

Fan Yang,
Liqiang Zhang,
Chenglin Bai,
Shijie Ren,
Zhen Tian,
Yicun Yao,
Minghong Wang

Affiliations

Fan Yang: Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, China
Liqiang Zhang: Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, China
Chenglin Bai: Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, China
Shijie Ren: Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, China
Zhen Tian: Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, China
Yicun Yao: Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, China
Minghong Wang: Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, China

DOI: https://doi.org/10.3390/photonics10020203
Journal volume & issue: Vol. 10, no. 2
p. 203

Abstract

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An interference filter is designed by fusing a segment of multi-core fiber (MCF) between two segments of multimode fibers (MMFs), which is then spliced between two segments of single mode fibers (SMFs). The light is split into the cladding and different cores of the MCF through the first segment of MMF, which is then coupled back into the core of SMF by the second segment of MMF. When the lengths of MCF are selected to be 4 mm and 10 mm, the 3 dB bandwidths of the filters around 1060 nm are 8.40 nm and 4.84 nm, respectively. Applying these filters in an Yb-doped fiber laser mode-locked by nonlinear polarization rotation, stable pulses have been obtained. Compared with the reported interference filters, the filter proposed in this paper has the advantages of simple fabrication process, compact structure and high environmental stability.

Published in Photonics

ISSN: 2304-6732 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics
Website: http://www.mdpi.com/journal/photonics

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