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:
Sep. 27, 2005
Filed:
Jun. 20, 2002
Applicants:
Tudur a Hughes, Walthamstow, GB;
Andrew L Reynolds, Epping, GB;
Gordon D Henshall, Harlow, GB;
Inventors:
Assignee:
Nortel Networks Limited, St. Laurent, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B006/28 ; G02B006/42 ;
U.S. Cl.
CPC ...
Abstract
An optical add drop component uses wavelength-selective reflectors which are switchable between first and second positions. This enables an add or drop function to be selectively applied. When the add or drop function is not required, there is no signal attenuation or degradation of an input signal. When an add or drop function is required, selected frequencies are added or dropped and other signal frequencies can pass through the wavelength-selective reflector. No demultiplexing operation is required.