Optical waveguides – Directional optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
2006-06-27
2006-06-27
Leo, John D. (Department: 2874)
Optical waveguides
Directional optical modulation within an optical waveguide
Electro-optic
C385S002000
Reexamination Certificate
active
07068865
ABSTRACT:
The present invention is a method and an apparatus for thermo-optic control of optical signals using photonic crystal structures. In one embodiment, a first portion of a split signal is modulated by propagating the signal through a photonic crystal waveguide in which two electrical contacts are laterally spaced from the waveguide region by a plurality of apertures formed through the photonic crystal substrate. A voltage applied across the electrical contacts causes resistive heating of the proximate photonic crystal waveguide through which the signal propagates, thereby modulating the temperature relative to an un-modulated second portion of the split signal that is used as a reference.
REFERENCES:
patent: 4709978 (1987-12-01), Jackel
patent: 5526449 (1996-06-01), Meade et al.
patent: 6468823 (2002-10-01), Scherer et al.
patent: 6545791 (2003-04-01), McCaughan et al.
patent: 6735368 (2004-05-01), Parker et al.
patent: 2002/0048422 (2002-04-01), Cotteverte et al.
Asheghi, et al., “Thermal Conduction in doped crystal silicom films,” Journal of Applied Physics, 91(8), Apr. 15, 2002, 5079-5088.
Asheghi, et al., “Phonon-boundary scattering in thin silicon layers,” Appl. Phys. Lett. 71 (13), Sep. 29 1997, 1798-1800.
Espinola, et al., “Fast and Low-Power Thermopotic Switch on Thin Silicon-on-Insulator,” IEEE Photoncs Technology Letters, 15(10), Oct. 2003, 1366-1368.
Ju, et al., “Phono scattreing in silicon films with thickness of order 100 nm, ” Applied Physic Letters, 74(20), May 17, 1999, 3005-3007.
Kasahara, et al., “New Structure of Silica-Based Planar Lightwave Circuits for Low-Power Thermooptic Switch and its Application to 8×8 Optical Matrix Switch,” Journal of Lightwave Technology, Jun. 20, 2002, 993-1000.
Soljacic, et al., “Photonic-Crystal slow-light enhancement of nonlinear phase sensitivity,” J. Opt. Soc. Am, B 19(9), Sep. 2002, 2052-2059.
Soref, et al., “Electrooptical Effects in Silicon,” IEEE Journal of Quantum Electronics, QE-23(1), Jan. 1987, 123-129.
Sverdrup, et al. “Measurement of ballistic phonon conduction near hotspots in silicon,” Applied Physics Letters, 78(21), May 21, 2001, 3331-3333.
Hamann Hendrik F.
McNab Sharee J.
O'Boyle Martin P.
Vlasov Yurii A.
Cheung Wan Yee
Leo John D.
Peace Rhonda S.
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