Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
2007-06-12
2007-06-12
Leung, Quyen (Department: 2874)
Optical waveguides
Temporal optical modulation within an optical waveguide
Electro-optic
C385S040000, C385S131000
Reexamination Certificate
active
11131634
ABSTRACT:
The present invention discloses an electro-optic waveguide device such as a modulator. The device has an electro-optic substrate having optical waveguides within the substrate at or near an upper surface. A buffer layer is formed on the top surface of the electro-optic substrate. A novel block layer is formed on the buffer layer surface, which can suppress or lessen an unwanted occurrence of chemical reactions at or near the surface of the buffer layer. A charge bleed off layer is formed on the block layer, which has a certain amount of electrical conductivity to bleed off any electrical charges generated on or in the electro-optic waveguide device. Electrodes are on the charge bleed off layer, which can provide electrical signals to the optical waveguides through the buffer layer, the block layer, and the charge bleed off layer.
REFERENCES:
patent: 5404412 (1995-04-01), Seino et al.
patent: 5473711 (1995-12-01), Hakogi et al.
patent: 5526448 (1996-06-01), Nagata et al.
patent: 5598490 (1997-01-01), Hakogi et al.
patent: 5949944 (1999-09-01), Minford et al.
patent: 6654512 (2003-11-01), Burns et al.
patent: 6661934 (2003-12-01), Burns et al.
Gee et al., “Minimizing dc drift in LiNbO3waveguide devices,” Appl. Phys. Lett., vol. 47 (3), Aug. 1, 1985, pp. 211-213.
Nagata et al., “Dc-voltage-induced thermal shift of bias point in LiNbO3optical modulators,” IEEE Photonic Technol. Lett., vol. 16, issue 11, Nov. 2004, pp. 2460-2462.
Wooten et al., “A review of lithium niobate modulators for fiber-optic communications systems,” IEEE J. Selected Topics Quantum Electron., vol. 6, pp. 69-82, Jan./Feb. 2000.
CRC Handbook of Chemistry and Physics 79th Edition, 1998-1999, p. 9-51 to 9-56.
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
JDS Uniphase Corporation
Leung Quyen
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