Ultrawide bandwidth dual sakura hollow-core antiresonant fiber polarization beam splitter

A dual sakura hollow-core antiresonant fiber (DSHC-ARF) is proposed for developing an ultrawide-bandwidth polarization beam splitter (PBS). An air gap is introduced into the fiber between dual sakura hollow cores acting as a mode-coupling channel, which determines the implementation of a DSHC-ARF-ba...

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Veröffentlicht in:Journal of the Optical Society of America. B, Optical physics Optical physics, 2021-11, Vol.38 (11), p.3395
Hauptverfasser: Jia, Haoqiang, Wang, Xin, Benson, Trevor M., Gu, Shuai, Lou, Shuqin, Sheng, Xinzhi
Format: Artikel
Sprache:eng
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Zusammenfassung:A dual sakura hollow-core antiresonant fiber (DSHC-ARF) is proposed for developing an ultrawide-bandwidth polarization beam splitter (PBS). An air gap is introduced into the fiber between dual sakura hollow cores acting as a mode-coupling channel, which determines the implementation of a DSHC-ARF-based PBS. We demonstrate the wavelength dependence of coupling length can be reduced by introducing nested tubes and investigate their impact on single-mode operation further. Through optimizing the fiber, a high-performance PBS based on a 4.42 cm long DSHC-ARF can be obtained with an ultrawide bandwidth of 460 nm ranging from 1400 to 1860 nm, good single-mode operation with a higher-order mode extinction ratio above 100, and a low fundamental mode loss below 0.543 dB.
ISSN:0740-3224
1520-8540
DOI:10.1364/JOSAB.432644