High birefringence and polarization-holding ability in nanosized optical fibers with Si bowtie cores

Weinan Feng*, Makoto Tsubokawa

*この研究の対応する著者

研究成果: Article査読

抄録

The focus of this study was mainly on the birefringence of nanosized bowtie-shaped slot core fibers that can transport ultrasmall optical spots. Here we showed large birefringence for the fibers reaching as high as 0.33, which is three orders of magnitude greater than normal-sized birefringent fibers, the main cause of which being the impact of geometrical birefringence arising from significant differences between the orthogonal modal distributions. Moreover, we investigated the polarization maintaining property for acute-angled bending in a 5-μm fiber and demonstrated slight degradations of less than 5 dB for the extinction ratio in a 180°bend, which was several orders of magnitude lower than the ratio for the fiber without bending. We used computer simulations for the estimates presented in this study. We believe that the high-polarization maintaining performance presented herein will be required for nanosized optical sensing probes and interconnections in photonic integrated circuits.

本文言語English
論文番号125603
ジャーナルOptics Communications
466
DOI
出版ステータスPublished - 2020 7月 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 物理化学および理論化学
  • 電子工学および電気工学

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