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:
Aug. 03, 1999
Filed:
Mar. 27, 1998
Masaaki Furuhashi, Tokyo, JP;
Ando Electric Co., Ltd., Tokyo, JP;
Abstract
A testing method for an optical fiber is disclosed which is able to measure a loss distribution and a loss at a connection point based on a received first light signal waveform. The method comprises a step of extracting and storing the duration of the first light signal waveform when the difference of the level between the start and the end of the waveform from the specified starting point exceeds the specified criterion, a step of generating a second light signal waveform by adding the fixed values corresponding to each of the duration of the extracting result mentioned above, a step of judging if a value of connection loss calculated using the first light signal waveform exceeds the specified criterion and a step of decision of a point exceeding the criterion specified above is a discontinuous point existing in the optical fiber to be tested.