Compact and broadband polarization beam splitter based on a silicon nitride augmented low-index guiding structure
- Creators
- Sun, X.
- Alam, M. Z.
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Aitchison, J. S.
- Mojahedi, M.
Abstract
We propose a compact polarization beam splitter (PBS) based on a silicon nitride enhanced silicon-on-insulator platform using an augmented low-index guiding (ALIG) waveguide structure. In the ALIG structure, the TM mode is mostly confined in the low-index silicon nitride, while the TE mode is confined in the high-index silicon. Since the two modes are confined in two separate layers, their properties can be controlled independently. The PBS is formed using an asymmetric multimode interference (MMI) section. The TM mode is directed to an output port by the ALIG waveguide, while the TE mode is coupled to the other output port via the multimode interferometer. Such a PBS has a very small footprint, low insertion loss, high polarization extinction ratio, and broadband response.
Additional Information
© 2016 Optical Society of America. Received 21 October 2015; accepted 7 November 2015; posted 24 November 2015 (Doc. ID 251722); published 22 December 2015. Funding. Natural Sciences and Engineering Research Council of Canada (NSERC).Attached Files
Published - ol-41-1-163.pdf
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Additional details
- Eprint ID
- 63494
- Resolver ID
- CaltechAUTHORS:20160108-102646723
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Created
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2016-01-08Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field