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:
Aug. 28, 2007
Filed:
Nov. 08, 2002
Catherine Anne Sugden, Birmingham, GB;
Xuewen Shu, Birmingham, GB;
Lee Ann Kennedy, Birmingham, GB;
Kevin Christopher Byron, Bishop Stortford, GB;
Catherine Anne Sugden, Birmingham, GB;
Xuewen Shu, Birmingham, GB;
Lee Ann Kennedy, Birmingham, GB;
Kevin Christopher Byron, Bishop Stortford, GB;
Aston University, Birmingham, GB;
Abstract
A first embodiment of the invention provides a Gires-Tournois etalon (DGTE)comprising a cladding mode suppressed optical fibre, including an etalon sectionin which a weakly reflective optical waveguide gratingand a strongly reflective optical waveguide gratingare provided. The two gratingsare chirped fibre Bragg gratings (FBGs). The chirped FBGsare arranged to together define an etalon cavity. Another aspect of the invention provides a dispersion compensatorcomprising two DGTEsaccording to the first embodiment of the invention. The DGTEshave a linearly varying dispersion over a selected optical bandwidth. The first DGTEhas a positive dispersion slope and the second DGTEhas a negative dispersion slope. The magnitudes of the dispersion slopes of the two DGTEsare substantially equal, so that the dispersion compensatorhas a constant dispersion across the selected bandwidth. The DGTEsare optically coupled to one another via a four-port optical circulator