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Compact and broadband polarization beam splitter based on a silicon nitride augmented low-index guiding structure

Sun, X. and Alam, M. Z. and Aitchison, J. S. and Mojahedi, M. (2016) Compact and broadband polarization beam splitter based on a silicon nitride augmented low-index guiding structure. Optics Letters, 41 (1). p. 163. ISSN 0146-9592. https://resolver.caltech.edu/CaltechAUTHORS:20160108-102646723

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1364/OL.41.000163DOIArticle
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-41-1-163PublisherArticle
ORCID:
AuthorORCID
Aitchison, J. S.0000-0003-1783-1380
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).
Funders:
Funding AgencyGrant Number
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Issue or Number:1
Classification Code:OCIS codes: (130.2790) Guided waves; (130.3120) Integrated optics devices; (130.5440) Polarization-selective devices; (230.7370) Waveguides
Record Number:CaltechAUTHORS:20160108-102646723
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160108-102646723
Official Citation:X. Sun, M. Alam, J. Aitchison, and M. Mojahedi, "Compact and broadband polarization beam splitter based on a silicon nitride augmented low-index guiding structure," Opt. Lett. 41, 163-166 (2016).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63494
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:08 Jan 2016 20:17
Last Modified:03 Oct 2019 09:28

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