Ultrasmall Si-nanowire-based polarization rotator
2008 (English)In: Journal of the Optical Society of America. B, Optical physics, ISSN 0740-3224, Vol. 25, no 5, 747-753 p.Article in journal (Refereed) Published
A polarization rotator based on asymmetrical Si nanowires is presented and optimized for high polarization rotation efficiency (almost 100%). The present polarization rotator has a very small conversion length (similar to 10 mu m) and consequently becomes very compact. The analysis of the wavelength dependence shows the present polarization rotator has a broad bandwidth (similar to 120 nm) for high conversion efficiency (> 97%). The tolerance to various fabrication errors is also numerically studied. To compensate the fabrication error, a post-compensation method is introduced by modifying the refractive index of the up-cladding. (c) 2008 Optical Society of America.
Place, publisher, year, edition, pages
2008. Vol. 25, no 5, 747-753 p.
WAVE-GUIDES, FABRICATION TOLERANCE, CONVERTER, DESIGN, COMPACT, REALIZATION, WAVELENGTH, INP
IdentifiersURN: urn:nbn:se:kth:diva-13934ISI: 000256323200007OAI: oai:DiVA.org:kth-13934DiVA: diva2:328360