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. 04, 2001
Filed:
Feb. 04, 1999
William B. Joyce, Basking Ridge, NJ (US);
Lucent Technologies, Inc., Murray Hill, NJ (US);
Abstract
The present invention is directed to a novel wavelength division multiplexed (WDM) lightwave communication system having allocated wide bands of wavelengths within which the respective optical pump light employed to amplify the optical signals must stay. As the temperature of the pump laser varies, its lasing wavelength is allowed to wander anywhere within its allocated wavelength band. Preferably, the pump lasers are wavelength stabilized within its respective allocated wavelength band by means of a fiber Bragg grating having an appropriately wide spectral width. Extending the lasing wavelength range of the pump laser advantageously, in turn, may be used to extend the temperature range over which the pump laser can be operated or locked.