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:
Nov. 17, 1998
Filed:
Jan. 08, 1997
Jean-Pierre Laude, Saclas, FR;
Instruments, S.A., Paris, FR;
Abstract
An N.times.N wavelength router (1) includes n m.times.m couplers (10, 15, 20, 25), N being equal to n.times.m, and the N inputs (11, 12, 16, 17, 21, 22, 26, 27) of the couplers being the inputs (E1-E8) of the N.times.N router. The N.times.N router also includes m n.times.n routers (30, 40) capable of switching an optical signal having a wavelength, from any one of its n inputs (31-34, 41-44) to any one of its n outputs (35-38, 45-48), according to the wavelength of the signal. The inputs of the n.times.n routers are connected to the outputs of the m.times.m couplers, and the outputs of the n.times.n routers are the outputs (S1-S8) of the N.times.N routers. The transmission spectra of the n.times.n routers have the form of a series of peaks, each of the series being different one from another.