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Publication detail
Authors: | D. Néel, T. Benyattou, P. Sanchis, J. Martí, W. Bogaerts, P. Dumon, R. Baets | Title: | Optical near-field study of photonic crystal tapers | Format: | International Journal | Publication date: | 10/2009 | Journal/Conference/Book: | Applied Optics
| Volume(Issue): | 48(30) p.5718-5721 | Internal Reference: | [N-941] | DOI: | | Download: |
(561KB) |
Abstract
A scanning near-field optical microscopy study is undertaken on photonic crystal tapers. These tapers are used to couple a 3 ìm wide multimode dielectric waveguide to a single-line defect monomode photonic crystal waveguide. Two kinds of taper, with or without a localized defect, are compared. Higher transmission efficiency is obtained when a defect is utilized. The near-field study at 1550 nm shows experimentally that this defect prevents leaky resonant states to appear in the taper and thus permits a decrease in out-of plane losses. These observations are supported by band diagram calculations. Related Research Topics
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