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:
Jun. 27, 2006
Filed:
Mar. 15, 2002
Mohammed N. Islam, Allen, TX (US);
Andrzej Kaminski, Allen, TX (US);
Herve A. Fevrier, Plano, TX (US);
Carl A. Dewilde, Richardson, TX (US);
Ozdal Boyraz, Allen, TX (US);
Mohammed N. Islam, Allen, TX (US);
Andrzej Kaminski, Allen, TX (US);
Herve A. Fevrier, Plano, TX (US);
Carl A. DeWilde, Richardson, TX (US);
Ozdal Boyraz, Allen, TX (US);
Xtera Communications, Inc., Allen, TX (US);
Abstract
An optical communication system includes a plurality of optical add/drop multiplexers (OADMs). The plurality of OADMs includes at least five low distortion OADMs. Each OADM is coupled between spans of a multiple span communication link and operable to receive a multiple wavelength signal. The multiple wavelength signal includes a plurality of bands of wavelength signals each separated from other bands of wavelength signals by one or more guard-channels. In one embodiment, each of the at least five low distortion OADMs adds/drops a common first band of wavelengths to/from the multiple wavelength signal. In some embodiments, a spectral distortion associated with a pass-through wavelength signal spectrally adjacent to one of the one or more guard-channels is no more than three decibels after exiting the last of the plurality of low distortion OADMs. In those embodiments, the guard-channel is adjacent to the first band of wavelengths.