Compact wavelength demultiplexing using focusing negative index photonic crystal superprisms

Here, we demonstrate a compact photonic crystal wavelength demultiplexing device based on a diffraction compensation scheme with two orders of magnitude performance improvement over the conventional superprism structures reported to date. We show that the main problems of the conventional superprism...

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Bibliographic Details
Published in:Optics express 2006-03, Vol.14 (6), p.2413-2422
Main Authors: Momeni, Babak, Huang, Jiandong, Soltani, Mohammad, Askari, Murtaza, Mohammadi, Saeed, Rakhshandehroo, Mohammad, Adibi, Ali
Format: Article
Language:English
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Summary:Here, we demonstrate a compact photonic crystal wavelength demultiplexing device based on a diffraction compensation scheme with two orders of magnitude performance improvement over the conventional superprism structures reported to date. We show that the main problems of the conventional superprism-based wavelength demultiplexing devices can be overcome by combining the superprism effect with two other main properties of photonic crystals, i.e., negative diffraction and negative refraction. Here, a 4-channel optical demultiplexer with a channel spacing of 8 nm and cross-talk level of better than -6.5 dB is experimentally demonstrated using a 4500 microm(2) photonic crystal region.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.14.002413