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:
May. 22, 2001
Filed:
Nov. 30, 1998
Bo Asp Moller Andersen, Bridgewater, NJ (US);
Ernest Eisenhardt Bergmann, Lehigh, NJ (US);
Carl Edward Gaebe, Fleetwood, PA (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
An erbium doped fiber amplifier includes a wavelength division multiplexer (WDM) which receives a data signal having a first wavelength through a first optical fiber which is single-mode at the first wavelength. Pump light supplied by an energy pump has a second wavelength shorter than the first. The pump light is provided through a second optical fiber which is multi-mode at the pump wavelength. The data signal and the pump light are multiplexed by the WDM. A third optical fiber is coupled to the WDM to receive the multiplexed output. The third fiber is single-mode at the data signal wavelength and multi-mode at the pump wavelength. The third fiber is erbium doped to amplify the input the data signal or is connected to a suitably doped fiber.