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:
Jul. 27, 1999
Filed:
Dec. 02, 1997
David G Mehuys, Sunnyvale, CA (US);
SDL, Inc., San Jose, CA (US);
Abstract
An optical fiber amplifier having a doped fiber, through which an input signal propagates, is bi-directionally pumped in a manner that provides for a desired composite absorption profile such as, in one case, a uniform degree of local pump energy absorbed along at least a substantial length of the fiber. Co-propagating and a counter-propagating pump sources are prescribed to have their wavelengths selected relative to the peak absorption wavelength of the amplifier to provide for a uniform composite absorption profile across the length of the fiber thereby improving the overall inversion efficiency of the amplifier as well as providing for reduced amplifier noise figure.