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:
Sep. 30, 1997
Filed:
Mar. 26, 1996
Nobunari Takeuchi, Tokyo, JP;
Ando Electric Co., Ltd., Tokyo, JP;
Abstract
A light return loss measurement method and system with an optical time domain reflectometer (OTDR) which displays an output of an arithmetic circuit. The method and system permits measurement of the light return loss over an arbitrary interval of an optical fiber. The system's arithmetic circuit calculates light return loss across a measurement interval set in a display waveform data by dividing a predetermined light return loss and integrating the measured waveform by multiplying the set interval by a light interception correction constant. The integration performed is a quadrature of various sections of an optical fiber. The light return loss measurement method and system also permits easy calibration of the light return loss in the OTDR.