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:
Jul. 01, 2025
Filed:
Oct. 27, 2021
Ii-vi Delaware, Inc., Wilmington, DE (US);
Tengda Du, San Jose, CA (US);
Xiaojie Xu, Pleasanton, CA (US);
Tsurugi Sudo, Cupertino, CA (US);
Martin Kwakernaak, San Jose, CA (US);
II-VI DELAWARE, INC., Wilmington, DE (US);
Abstract
A system is proposed for continuously monitoring the integrity of a transmission fiber coupled to a laser source and immediately shutting down the laser source upon recognition of any type of cut, break or disconnect along the transmission fiber. A pair of monitoring photodiodes is included with the laser source and used to look at the ratio of reflected light to transmitted light, shutting down the laser if the ratio exceeds a given threshold. If a break is present, the power of the reflected light will be higher than normal, where a defined threshold is used to determine of the calculated intensity is indicative of a break. By using measurements performed in terms of decibels, the monitoring system needs only to take the difference in intensities to generate the reflection/transmission ratio output.