Compact Mach-Zehnder interferometer based on self-collimation of light in a silicon photonic crystal.
Opt Express
; 18(7): 6437-46, 2010 Mar 29.
Article
em En
| MEDLINE
| ID: mdl-20389667
ABSTRACT
We demonstrate a compact silicon photonic crystal Mach-Zehnder interferometer operating in the self-collimation regime. By tailoring the photonic band structure such as to produce self-collimated beams, it is possible to design beam splitters and mirrors and combine these to a 20 x 20 microm(2) format. With transmission spectroscopy we find a pronounced unidirectional optical output, the output ratio being as high as 25 at the self-collimation wavelength. Furthermore, the self-collimated beams and the unidirectionality are clearly observed in real space using near-field and far-field optical microscopy. Interpretation of the optical data is strongly supported by different types of simulations.
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01-internacional
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MEDLINE
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En
Ano de publicação:
2010
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Article