Tunable, Oblique Incidence Resonant Grating Filter for Telecommunications
Applied Optics, Vol. 43, Issue 8, pp. 1683-1694 (2004)
http://dx.doi.org/10.1364/AO.43.001683
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Abstract
We have designed a tunable, oblique-incidence resonant grating filter that covers the C band as an add-drop device for incident TE-polarized light. We tune the filter by tilting a microelectromechanical systems platform onto which the filter is attached. The fabrication tolerances as well as the role of finite incident-beam size and limited device size were addressed. The maximum achievable efficiency of a finite-area device as well as a scaling law that relates the resonance peak width and the minimum device size is derived. In good agreement with simulations, measurements indicate a negligible change in shape of the resonance peak from 1526 nm at a 45° angle of incidence to 1573 nm at a 53° angle with a full width at half-maximum of 0.4 nm. In this range the shift of the peak wavelength is linear with respect to changes in the angle of incidence.
© 2004 Optical Society of America
OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(120.2440) Instrumentation, measurement, and metrology : Filters
(220.4830) Optical design and fabrication : Systems design
(230.1950) Optical devices : Diffraction gratings
(230.7390) Optical devices : Waveguides, planar
Citation
Guido Niederer, Hans Peter Herzig, Joseph Shamir, Hans Thiele, Marc Schnieper, and Christian Zschokke, "Tunable, Oblique Incidence Resonant Grating Filter for Telecommunications," Appl. Opt. 43, 1683-1694 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-8-1683
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