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:
Dec. 20, 2005
Filed:
Feb. 21, 2001
Bjarke Rose, Allerod, DK;
Thomas Rasmussen, Frederiksberg, DK;
Chaker Khalfaoui, Lyngby, DK;
Michael Rasmussen, Bronshoj, DK;
Jens Bastue, Frederiksberg, DK;
Per Eld Ibsen, Copenhagen, DK;
Claus Friis Pedersen, Brønshøj, DK;
Bjarke Rose, Allerod, DK;
Thomas Rasmussen, Frederiksberg, DK;
Chaker Khalfaoui, Lyngby, DK;
Michael Rasmussen, Bronshoj, DK;
Jens Bastue, Frederiksberg, DK;
Per Eld Ibsen, Copenhagen, DK;
Claus Friis Pedersen, Brønshøj, DK;
Ibsen Photonics A/S, Farum, DK;
Abstract
A wavelength division multiplexed device is based on a transmission grating spectrometer having at least two diffractive optical elements. The WDM device provides flexible use and may be widely applied in WDM systems. The device is useful for multiplexing and demultiplexing, channel monitoring, and for adding and dropping channels. The device provides programmability in use as an add/drop multiplexer.