Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Ultrashort and ultrabroadband silicon polarization beam splitter based on a bent directional coupler

Not Accessible

Your library or personal account may give you access

Abstract

A novel ultra-short polarization beam splitter (PBS) based on a bent directional coupler is proposed. The bent directional coupler has two bent optical waveguides with different core widths, which is designed to have phase-matching for TM polarization while there is a significant phase-mismatch for TE polarization. Therefore, the TM polarized light can be coupled from the narrow input waveguide to the adjacent wide waveguide while the TE polarization goes through the coupling region without significant coupling. An ultra-short (<10μm-long) PBS is designed based on silicon-on-insulator nanowires and the length of the bent coupling region is as small as 4.5μm when choosing the gap width as 200nm (large enough to simplify the fabrication). The numerical simulations show that the present PBS has a good fabrication tolerance for the variation of the waveguide width (more than ±60nm) and a very broad band (~200nm) for an extinction ratio of >10dB.

© 2011 Optical Society of America

PDF Article
More Like This
Ultra-short Silicon Polarization Beam Splitter Based on an Asymmetrical Bent Directional Coupler

Jian Wang, Di Liang, Yongbo Tang, Daoxin Dai, and John E Bowers
ATh1B.5 Asia Communications and Photonics Conference (ACPC) 2012

Ultra-broadband Polarization Beam Splitter Based on a Tapered Bent Directional Coupler

Ning Zhao, Yu He, Ciyuan Qiu, Yong Zhang, and Yikai Su
Su2A.132 Asia Communications and Photonics Conference (ACPC) 2018

Ultra-small silicon polarization beam splitter based on cascaded asymmetry directional couplers

Jian Wang and Daoxin Dai
OTh4I.1 Optical Fiber Communication Conference (OFC) 2013

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved