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Optical Engineering • Open Access

Experimental demonstration of an ultracompact polarization beamsplitter based on a multimode interference coupler with internal photonic crystals

Paper Abstract

The fabrication and characterization of a compact InP-based polarization beamsplitter (PBS) is presented. A multimode interference (MMI) coupler with an internal air hole photonic crystal (PhC) section is utilized to separate the two polarizations. The PhC structure in the middle of the MMI is polarization dependent, so that one polarization is reflected and the other one is transmitted; both are collected by the respective output ports of the MMI coupler. The obtained experimental results show that the PBS as short as ~400 µm has an extinction ratio as large as 15 dB.

Paper Details

Date Published: 1 June 2010
PDF: 3 pages
Opt. Eng. 49(6) 060503 doi: 10.1117/1.3454377
Published in: Optical Engineering Volume 49, Issue 6
Show Author Affiliations
Y. Shi, Joint Research Ctr. of Photonics (China)
Naeem Shahid, Royal Institute of Technology (Sweden)
M. Li, Joint Research Ctr. of Photonics (China)
Audrey Berrier, FOM Institute for Atomic and Molecular Physics (Netherlands)
Sailing He, Joint Research Ctr. of Photonics (China)
Srinivasan Anand, Kista Photonics Research Ctr. (Sweden)


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