Switching of Output Coupling in a Grating Coupler by Diffraction Transition to the Distributed Bragg Reflector Regime
Applied Optics, Vol. 38, Issue 12, pp. 2500-2503 (1999)
http://dx.doi.org/10.1364/AO.38.002500
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Abstract
In a proposed switching grating coupler (SGC), the grating period Λ is chosen so that the SGC converts from a first-order grating coupler to a third-order distributed Bragg reflector by means of a small change in the guided mode index. The principle for switching the radiated wave power and the effective aperture of the SGC were experimentally confirmed by use of the thermo-optic effect of a polymer waveguide. The extinction of the peak intensity of the wave radiated by the SGC and collected by an external lens was measured to be 5 dB with a temperature change of 10°.
© 1999 Optical Society of America
OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(130.0130) Integrated optics : Integrated optics
(230.0230) Optical devices : Optical devices
Citation
Shogo Ura, Hironobu Moriguchi, Satoshi Kido, Toshiaki Suhara, and Hiroshi Nishihara, "Switching of Output Coupling in a Grating Coupler by Diffraction Transition to the Distributed Bragg Reflector Regime," Appl. Opt. 38, 2500-2503 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-12-2500
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