Optical waveguide device with additional electrode structure

Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic

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385 3, 385 8, 385 9, G02F 1035

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active

055639658

ABSTRACT:
At least one waveguide 2,3,4 are formed on a crystal substrate 1 having an electro-optical effect. A buffer layer 5 (with a dielectric constant of 1.1 to 40) is formed on the waveguide. Lower CPW electrode structures 6,7 are formed on the buffer layer. Intermediate electrode structures 8,9 are formed thereon and additional electrode structure 10 is formed on the intermediate signal electrode 8.

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patent: 5502780 (1996-03-01), Madabhushi
by M. Seino et al, "20-GHz 3dB-Bandwidth Ti:LiNbO.sub.3 Machzehnder Modulator", ECOC '90, paper ThB22-5, pp. 433-436 (1989). (no month available).
"New Travelling-Wave Electrode Mach-Zehnder Optical Modulator With 20 GHz Bandwidth and 4.7V Driving Voltage At 1.52.mu.m Wavelength", Electronics Letters, vol. 25, No. 20, pp. 1382-1382. Sep. 28, 1989.
"A Wide-Bank Ti:LiNBO.sub.3 Optical Modulator with a Conventional Coplanar Waveguide Type Electrode", IEEE Photonics. Tech. Lett., vol. 4, No. 9, pp. 1020-1022, 1922. Sep.

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