On-chip silicon switchable polarization beam splitter

Shaojie Yin, Huaqing Qiu, Zhibin Wang, Daoxin Dai, Xiaowei Guan*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We propose and experimentally demonstrate an on-chip switchable polarization beam splitter (PBS) using silicon waveguides. To the best of our knowledge, it is the first demonstration of an on-chip PBS that is not only able to split polarization beams but can be tuned to allow these beams to switch the output paths. The design of the switchable PBS is based on a directional coupler. Measurements show extinction ratios of >12 dB in both the initial state and the switched state, which is realized by heating the device up to 57°C. By adding switching ability to an on-chip PBS, this work is expected to benefit quantum technology, communications, microwave photonics, etc.

Original languageEnglish
JournalOptics Letters
Volume47
Issue number4
Pages (from-to)961-964
ISSN0146-9592
DOIs
Publication statusPublished - 15 Feb 2022

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