Electrooptic device structure and method for reducing thermal ef

Details Electrooptic device structure and method for reducing thermal ef Electrooptic device structure and method for reducing thermal ef

1993-11-22

1995-02-07

Bovernick, Rodney B.

Optical waveguides

Directional optical modulation within an optical waveguide

385 8, G02B 634

Patent

active

053881702

ABSTRACT:
An interferometric modulator comprising a substrate of titanium-doped lithium niobate (Ti:LiNbO.sub.3) having top and bottom surfaces and a waveguide formed in the top surface is disclosed. A conductive layer is formed on the bottom surface of the substrate and electrically coupled to a top-surface ground plane or simply to ground potential. The bottom surface conductive layer functions to thermally stabilize the modulator during operation.

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patent: 5247382 (1993-09-01), Suzuki
I. Sawaki et al., "Thermally Stabilized Z-Cut Ti:LiNbO.sub.3 Waveguide Switch", Conference on Lasers and Electro-optics, San Francisco, Calif., Jun. 9-13, 1986, paper MF2, pp. 46-47.
Skeath et al., "Novel Electrostatic Mechanism in the Thermal Instability of Z-Cut LiNbO.sub.3 Interferometers", Appl. Phys. Lett., 49 (19), Nov. 10, 1986, pp. 1221-1223.
M. Seino et al., "20-GHz 3dB-Bandwidth Ti:LiNbO.sub.3 Mach-Zehnder Modulator", European Conference on Optical Communications, Amsterdam, The Netherlands, 1990, paper ThG1.5.
Korotky et al., "High-Speed, Low Power Optical Modulator with Adjustable Chirp Parameter", Topical Meetings on Integrated Photonics Research, Monterey, Calif., Apr. 9-11, 1991, paper TuG2.
Veselka et al, "Sensitivity to RF Drive Power and the Temperature Stability of Mach-Zehnder Modulators", Topical Meetings on Integrated Photonics Research, New Orleans, La., Apr. 13-16, 1992, paper TuG4-1.

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