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:
Apr. 14, 1992
Filed:
Jan. 30, 1991
Etsuji Omura, Itami, JP;
Abstract
A light-controlled semiconductor light coupler for altering the position of and modulating a signal light in response to the intensity of a control light includes a multiple quantum well structure having an index of refraction that varies in response to the intensity of an incident, essentially monochromatic control light, first and second semiconductor light guide layers contacting and sandwiching the multiple quantum well structure for transmitting a signal light beam variably coupled between the first and second light guide layers in response to the intensity of the control light, and first and second semiconductor cladding layers contacting and sandwiching the first and second light guide layers, respectively.