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. 28, 2003
Filed:
Jun. 08, 2000
Wenhua Lin, Middletown, NJ (US);
Nathan Myron Denkin, Matawan, NJ (US);
Tek-Ming Shen, Westfield, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
An integrated wavelength router for use in a wavelength division multiplexing system is disclosed. Input waveguides deliver a plurality of optical signals to a first slab coupler which is in turn coupled to an optical grating waveguide. A second slab coupler is coupled to the output of the optical grating waveguide which is in turn coupled to output waveguides. The input and output waveguides transmit data channels of the wavelength division multiplexing system and include out-of-band signals such as a supervisory signal or a pilot signal with different channel bandwidths. WDM systems utilizing the router of the present invention can reduce power losses and therefore increase the span length of the wavelength division multiplexing system.