Microfiber-based polarization beam splitter and its application for passively mode-locked all-fiber laser

Xiabing Zhou, Mingwei Qiu, Yuhao Qian, Mengmeng Chen, Zuxing Zhang, Lin Zhang

Research output: Contribution to journalArticlepeer-review


Nonlinear polarization evolution based on polarization beam splitter (PBS) is a classical technique for passive mode-locking of fiber lasers. Different from commonly used bulky PBS, in this paper all-fiber PBSs composed of two parallel coupled microfibers have been proposed and fabricated under the condition of appropriate microfiber diameter and coupling length. Using our fabricated microfiber PBSs, passively mode-locked all-fiber lasers have also been demonstrated. The results indicate that the microfiber-based PBS has advantages of simple fabrication, compact size, and most importantly, variable polarization extinction ratio and operation bandwidth. The all-fiber mode-locked lasers with the microfiber PBSs generating stable pulses at both 1.0 μm and 1.5 μm wavelength bands have comparable performance with their counterparts based on bulky PBSs. It may be a step towards true all-fiber mode-locked laser and other all-fiber systems.
Original languageEnglish
Article number9153132
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number2
Early online date30 Jul 2020
Publication statusPublished - 1 Mar 2021

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  • Polarization beam splitter
  • mode-locked fiber laser
  • nonlinear polarization evolution


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