Patent Number: 6,512,864

Title: Optical multiplexer/demultiplexer arrangement for WDM signals having in-band and out-of-band signal components

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.

Inventors: Lin; Wenhua (Middletown, NJ), Denkin; Nathan Myron (Matawan, NJ), Shen; Tek-Ming (Westfield, NJ)

Assignee: Lucent Technologies Inc.

International Classification: G02B 6/34 (20060101); G02B 006/28 ()

Expiration Date: 01/28/2020