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

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...

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Bibliographic Details
Published inPhotonics Vol. 10; no. 2; p. 203
Main Authors Yang, Fan, Zhang, Liqiang, Bai, Chenglin, Ren, Shijie, Tian, Zhen, Yao, Yicun, Wang, Minghong
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.02.2023
Subjects
Bandwidths
Doped fibers
Equipment and supplies
Fabrication
fiber laser
Fiber lasers
Fiber optics
Fibers
Filters
Interference
interferometer filter
Laser applications
Laser mode locking
Laser modes
Lasers
Light
mode-locked
Optical instruments
Segments
Spectrum allocation
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Summary: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.
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ISSN:2304-6732
2304-6732
DOI:10.3390/photonics10020203