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:
Oct. 27, 1998
Filed:
Dec. 27, 1995
Francesco Masetti, Paris, FR;
Alcatel N.V., Rijswijk, NL;
Abstract
A photonic switching network includes input ports and output ports; a modulation device associated with the input ports modulates cells addressed to the same output port onto an optical carrier having a wavelength assigned to that output port. Q optical paths offer respective time-delays of 0, 1, . . . , Q-1 cell times between the input ports and the output ports so that, on being routed from an input port to an output port, cells are switched to one of the paths with time-delay so as to reach the same output port one by one. It further includes a plurality of additional output ports each connected to a controllable time-delay element the output of which can be coupled to a recirculation input port.