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Weak gratings in silicon-on-insulator for spectral filters based on volume holography |
Optics Letters, Vol. 38, Issue 3, pp. 386-388 (2013)
http://dx.doi.org/10.1364/OL.38.000386
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Abstract
We demonstrate integrated holographic grating filters, that can be designed toward any desired target spectrum. A straightforward design method transforms this target spectrum into a weak effective refractive index variation. The filters are implemented in high-contrast silicon-on-insulator by modulating the width of the shallow etched sides of a ridge waveguide. Measurements show that this is a promising approach to integrate flexible and versatile filters on photonic chips to enable more complex applications.
© 2013 Optical Society of America
OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(090.7330) Holography : Volume gratings
(130.7408) Integrated optics : Wavelength filtering devices
ToC Category:
Diffraction and Gratings
History
Original Manuscript: November 26, 2012
Revised Manuscript: January 7, 2013
Manuscript Accepted: January 7, 2013
Published: February 1, 2013
Citation
Marie Verbist, Dries Van Thourhout, and Wim Bogaerts, "Weak gratings in silicon-on-insulator for spectral filters based on volume holography," Opt. Lett. 38, 386-388 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-3-386
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