The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 1991
Filed:
Nov. 29, 1989
Kwok-Wai Cheung, Rockaway, NJ (US);
Brian L Heffner, Redwood City, CA (US);
David A Smith, Freehold, NJ (US);
Bell Communications Research, Inc., Livingston, NJ (US);
Abstract
An acousto-optica converter fabricated on x-cut (LiNbO.sub.3 and having an optical waveguide extending along the y-direction. An interdigital transducer is oriented at 5.degree. with respect to the y-direction in order to compensate for the acoustic walk-off on such an orientation. Such as integrated acousto-optical converter allows multiple stages of such converters so as to provide for (1) two-stage zero-frequency shifted converters and filters, (2) lasers using an acousto-optic filter as a tuning element, (3) polarization-independent converters in which the modes are divided, separately polarization converted, and recobined according to frequency, (4) and wavelength division multiplexing routing switches capable of simultaneously switching multiple channels.