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:
May. 17, 1988
Filed:
Sep. 30, 1982
Vincent A Lanzisera, Northboro, MA (US);
GTE Laboratories Incorporated, Waltham, MA (US);
Abstract
Frequency modulated light is provided to an optical fiber by exciting a laser medium, such as a diode laser, so that stimulated emitted radiation, at a fixed wavelength .lambda., emanates from opposite surfaces of the medium. One end of the fiber is coupled to one of the surfaces. A reflecting medium is provided a distance (n.lambda.)/4 away from the other of the surfaces (n being a positive integer) to reflect emanated radiation from the other surface back to the other surface. The reflecting medium is oscillated in accordance with a signal to be modulated. The radiation reflected back to the other surface tends to cancel or reinforce, respectively, the radiation that emanates from the one surface, when n is an odd integer or an even integer, respectively. The reflecting medium can be a light reflecting diaphragm adapted to be acoustically oscillated.