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:
Nov. 22, 2016
Filed:
Jan. 06, 2015
Ii-vi Incorporated, Saxonburg, PA (US);
Ian Peter McClean, Brixham, GB;
Aravanan Gurusami, Morgan Hill, CA (US);
II-VI Incorporated, Saxonburg, PA (US);
Abstract
A doped fiber amplifier (e.g., an erbium-doped fiber amplifier—EDFA) module is configured to include metrology functionality for performing real-time measurements of the fiber spans connected to the EDFA. In one embodiment, a separate component utilized to perform optical time domain reflectometry (OTDR) measurements is embedded with the EDFA module. The OTDR measurement component includes its own laser source and detector, which are used to analyze the input and output fiber spans associated with the EDFA. In another embodiment, the pump laser of the EDFA is also used as the optical probe light source for the OTDR component, where the source is either 'switched' or 'shared' between performing amplification and providing OTDR measurements. In yet another embodiment, a “dual pump” source is included with the OTDR component itself and modified to utilize one laser for amplification and the other for OTDR purposes.