U.S. patents available from 1976 to present.
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Electro-optic reflection device with traveling-wave structure

Patent 6016198 Issued on January 18, 2000. Estimated Expiration Date: Icon_subject November 7, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Broadband, low drive voltage, electrooptic, intergrated optical modulator
Patent #: 5416859
Issued on: 05/16/1995
Inventor: Burns, et al.

Traveling-wave reflective electro-optic modulator Patent #: 5886807
Issued on: 03/23/1999
Inventor: Cummings

Inventors

Application

No. 966197 filed on 11/07/1997

US Classes:

356/477, Using fiber or waveguide interferometer385/2, Electro-optic385/3Phase modulation type

Examiners

Primary: Kim, Robert H.
Assistant: Lee, Andrew H.

Attorney, Agent or Firm

International Class

G01B 009/02

Abstract

A Mach-Zehnder interferometer has electrodes configured to act as a microe transmission line. The optical waveguide arms have a reflective coating on their distal ends so that light is reflected back through the arms. The microwave transmission line is open-ended in a vicinity of the reflective coating so that microwave energy is reflected at the open end. Thus, the interferometer supports a traveling wave in a reflective configuration, and the distance over which interaction takes place can be effectively doubled.

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