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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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
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container_issue 6
container_start_page 2413
container_title Optics express
container_volume 14
creator Momeni, Babak
Huang, Jiandong
Soltani, Mohammad
Askari, Murtaza
Mohammadi, Saeed
Rakhshandehroo, Mohammad
Adibi, Ali
description 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.
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title Compact wavelength demultiplexing using focusing negative index photonic crystal superprisms
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