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:
Feb. 01, 2000
Filed:
Nov. 21, 1997
Applicant:
Inventor:
Gary A Ball, Simsbury, CT (US);
Assignee:
JDS Uniphase Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
359130 ; 359128 ; 359124 ; 385 37 ; 385 24 ;
Abstract
An apparatus for use in selectively adding or dropping channels in an optical network includes an optical circulator and an array of programmable fiber Bragg gratings. Each fiber Bragg grating is a narrow ban reflective element which can be tuned on or off of an ITU standard wavelength division multiplex channel so that the channel is either fully reflected or transmitted by the grating. The addition or subtraction of signal channels is operated by a controller which operates the individual fiber Bragg gratings between transmissive and reflective states.