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:
Jan. 24, 2006
Filed:
Oct. 12, 2001
Applicant:
Mikhail Nicholaos Zervas, Southampton, GB;
Inventor:
Mikhail Nicholaos Zervas, Southampton, GB;
Assignee:
Southampton Photonics, Ltd, Southampton, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
Apparatus for filtering optical radiation, which apparatus comprises a waveguide (), and which waveguide () comprises a grating () having a first reflection wavelength band () having a first average wavelength () and a first group delay (), and a second reflection wavelength band () having a second average wavelength () and a second group delay (), wherein the first group delay () and the second group delay () are different in at least a portion of the second reflection wavelength band ().