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:
May. 15, 2007
Filed:
Sep. 27, 2002
Michael C. Parker, Colchester, GB;
Stuart D. Walker, Colchester, GB;
Michael C. Parker, Colchester, GB;
Stuart D. Walker, Colchester, GB;
Fujitsu Limited, Kawasaki, JP;
Abstract
A compensator for compensating polarisation-mode dispersion, comprises a splitter () arranged to split light, according to the light's polarisation, between a first optical path and a second optical path; a combiner () arranged to combine light from the first optical path and the second optical path, and a monitor () for monitoring the light. An active wavelength-delay device () is provided in the first optical path and arranged such that components of the light travelling in the first optical path and having different wavelengths are subjected to different delays, the delays being selected according to an output from the monitor ().