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. 11, 2000
Filed:
May. 04, 1998
Jean-Pierre Laude, Saclas, FR;
Instruments, S.A., Paris, FR;
Abstract
A wavelength selective optical device includes a two-dimensional grating (6) and a device 11. The two-dimensional grating represents an intrinsic function. The device (11) is to change the complex amplitude of the electromagnetic field of the light wave, according to a filtering function, and is to expand the image spot into a monochromatic light in the direction of the spectral dispersion. An optical fiber wavelength multiplexer-demultiplexer includes a filter (11), a mirror (9) and a grating (6). The optical axis of the mirror passes through the plane of the grating and is parallel to the lines of the grating. The filter (11) is arranged in the vicinity of the mirror to control the intrinsic function of the multiplexer-demultiplexer.