Optical modulator having a reflection plate mounted on a reflect

Details Optical modulator having a reflection plate mounted on a reflect Optical modulator having a reflection plate mounted on a reflect

1998-03-19

2000-03-14

Epps, Georgia

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

385 3, 359245, 359247, G02F 1035, G02F 1055

Patent

active

060383542

ABSTRACT:
An optical modulator (39) includes a substrate (7) exhibiting an electro-optical Pockels effect and having first and second end surfaces (31, 33) opposite to each other. An optical waveguide (9) of a branched interferometer type is formed on the substrate (7) and has first and second branched waveguide portions (11, 13) with an input end and a reflection side end respectively exposed in the first and second end surfaces (31, 33) of the substrate (7). A modulating electrode (15) is formed on the substrate (7) in a vicinity of the branched interferometer type optical waveguide (9). A reflection plate (35) is mounted on the second end surface (33) of the substrate (7) at an angle of inclination (.theta.) with respect thereto. Still further, a spacer (41) is disposed between a side of the reflection plate (35) and the second end surface (33) of the substrate (7) to thereby define the angle of inclination (.theta.) of the reflection plate (35) with respect to the second end surface (33) of the substrate (7).

REFERENCES:
patent: 5278499 (1994-01-01), Ito et al.
Patent Abstracts of Japan, vol. 018, No. 007 (P-1670), Jan. 7, 1994 & JP 05 249 419 A (Nippon Hoso Kyokai), Sep. 28, 1993.
Baranov D. V. et al: "Phase Bias Tuning and Extinction Ratio Improvement of Mach-Zehnder Interferometer" Integrated Optical Circuits, Boston, Sep. 3-4, 1991, No. 3, Ka Kha Wong, pp. 389-394.
Patent Abstracts of Japan, vol. 018, No. 048 (P-1682), Jan. 25, 1994 & JP 05 273260 A (Yokogawa Electric Corp.), Oct. 22, 1993.

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