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. 27, 2012
Filed:
Apr. 30, 2009
Michael Cahill, Dedham, MA (US);
Michael Cahill, Dedham, MA (US);
Aegis Lightwave, Inc., Woburn, MA (US);
Abstract
A method for estimating optical power in an optical channel includes determining a tunable filter full-width, FW, by measuring a response of the tunable filter to a known signal and mapping the response to frequency. A portion of an optical channel is coupled to an input of the tunable optical filter. A peak power response, P, and a full width tunable filter response, FW, to the optical channel are determined by measuring a response of the tunable filter to the optical channel and mapping the response to frequency. A signal power, P, is then calculated from the peak power response, P, and a ratio of the full width tunable filter response, FW, to the tunable filter full-width, FW.