Polarization-dependent intermodal four-wave mixing in a birefringent multimode photonic crystal fiber

Jinhui Yuan, Zhe Kang*, Feng Li, Guiyao Zhou, Xinzhu Sang, Qiang Wu, Binbin Yan, Xian Zhou, Kangping Zhong, Liang Wang, Kuiru Wang, Chongxiu Yu, Chao Lu, Hwa Yaw Tam, Alex Wai

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

8 Citations (Scopus)


In this Letter, polarization-dependent intermodal four-wave mixing (FWM) is demonstrated experimentally in a birefringent multimode photonic crystal fiber (BM-PCF) designed and fabricated in-house. Femtosecond pump pulses at wavelengths ∼800 nm polarized along one of the principal axes of the BM-PCF are coupled into a normal dispersion region awayfromthezero-dispersion wavelengths ofthefundamental guided mode of the BM-PCF. Anti-Stokes and Stokes waves are generated in the 2nd guided mode at visible and nearinfrared wavelengths, respectively. For pump pulses at an average input power of 500 mW polarized along the slow axis, the conversion efficiencies?as and?s of the anti-Stokes and Stokes waves generated at wavelengths 579.7 and 1290.4 nm are 19% and 14%, respectively. For pump pulses polarized along the fast axis, the corresponding?as and?s at 530.4 and 1627 nm are 23% and 18%, respectively. We also observed that fiber bending and intermodal walk-off have a small effect on the polarization-dependent intermodal FWM-based frequency conversion process.

Original languageEnglish
Pages (from-to)1644-1647
Number of pages4
JournalOptics Letters
Issue number9
Early online date18 Apr 2017
Publication statusPublished - May 2017

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics


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