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:
Jul. 20, 2004
Filed:
Jun. 27, 2002
Applicant:
Inventor:
John Canning, Carlton, AU;
Assignee:
The University of Sydney, , AU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/26 ; G02B 6/42 ; G02B 6/16 ; G02B 6/02 ;
U.S. Cl.
CPC ...
G02B 6/26 ; G02B 6/42 ; G02B 6/16 ; G02B 6/02 ;
Abstract
An optical waveguide ( ) has a grating structure ( ) in which gratings of different orders are superimposed. When first and second order gratings are superimposed, input light is partially reflected by the first order component and partially coupled out of the waveguide by the second order component. The second order component can also be used to couple external light into the waveguide ( ). The grating structure ( ) has applications to free space couplers, optical sensors, and suppression of ripples in dispersion compensators.