Waveguide type optical device

Details Waveguide type optical device Waveguide type optical device

1995-03-09

1996-03-26

Lee, John D.

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

385 2, 385 8, 385 9, 385 40, G02F 1035

Patent

active

055027806

ABSTRACT:
A waveguide type optical device is provided. Waveguides of titanium metal formed in a crystal substrate of LiNbO.sub.3 having an electro-optic effect. A buffer layer of a dielectric material is formed on the crystal substrate and coplanar waveguide electrodes of a signal electrode and two ground electrodes are formed on the buffer layer. A substrate of a low dielectric constant material formed on the back surface of the crystal substrate and having a slit or concave formed on portions other than end portions of the side to be opposed to the back surface.

REFERENCES:
patent: 4850667 (1989-07-01), Djupsjo/ backa
patent: 5185830 (1993-02-01), Nishimoto
patent: 5214724 (1993-05-01), Seino et al.
patent: 5416859 (1995-05-01), Burns et al.
M. Rangaraj, et al.; "A Wide-Band Ti:LiNbO3 Optical Modulator With a Conventional Coplanar Waveguide Type Electrode"; IEEE Photonics Technology Letters, vol. 4, No. 9, Sep. 1992, pp. 1020-1022.
"New Travelling-Wave Electrode Mach-Zehnder Optical Modulator With . . . Wavelength"; Electronics Letters, vol. 25, No. 20, Sep. 28, 1989, pp. 1382-1383.

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