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. 17, 2001
Filed:
May. 25, 1999
Applicant:
Inventor:
Jean-Pierre Laude, Saint Cyr la Riviere Par Saclas, FR;
Assignee:
Highwave Optical Technologies, Lannion, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/293 ; G02B 6/34 ;
U.S. Cl.
CPC ...
G02B 6/293 ; G02B 6/34 ;
Abstract
Optical fiber wavelength multiplexer/demultiplexer having an optical axis and including a refraction grating having a dispersion plane; at least one exit fiber having an entrance face; at least one entrance fiber having an exit face; an optical combining device for optically combining the exit face of the entrance fiber with the entrance face of the exit fiber ensuring the operation of the grating in a Littrow configuration. The optical combining device includes a separate reflecting device for ensuring a fold-back of the optical axis thereby allowing a high Littrow angle.