Experimental demonstration of an ultracompact polarization beamsplitter based on a multimode interference coupler with internal photonic crystals
2010 (English)In: Optical Engineering: The Journal of SPIE, ISSN 0091-3286, Vol. 49, no 6, 060503- p.Article in journal (Refereed) Published
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 similar to 400 mu m has an extinction ratio as large as 15 dB.
Place, publisher, year, edition, pages
2010. Vol. 49, no 6, 060503- p.
polarization beamsplitter, multimode interference, photonic crystal, InP
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-26874DOI: 10.1117/1.3454377ISI: 000280746600003ScopusID: 2-s2.0-80855129213OAI: oai:DiVA.org:kth-26874DiVA: diva2:373432
QC 201011302010-11-302010-11-292013-11-19Bibliographically approved