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:
Nov. 16, 1982
Filed:
Aug. 08, 1980
Applicant:
Inventor:
Mark W Levi, Utica, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350 9614 ; 350 9615 ;
Abstract
An electro-optical crystal slab defining an optical waveguide modulator between two parallel boundary regions. Each boundary region has electrodes next to the channel and a doped area immediately outside the region. An electric field applied via the boundary electrodes creates a low index of refraction and transmitted light remains in the waveguide. When boundary fields are removed some light is absorbed by the doped material. Fields applied to compensating electrodes lower the index of refraction of the doped area so that the light is directed into it and absorbed. Any light passing through the absorbing material is contained in an alternate channel.