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. 10, 2003
Filed:
Dec. 13, 2001
Chia-Chi Wang, Hillsborough, NJ (US);
Onetta, Inc., Sunnyvale, CA (US);
Abstract
Optical amplifiers and other optical network equipment for handling optical data signals in fiber-optic communications links are provided. Optical fiber that is pumped by laser diode pumps may be used to provide optical gain. A circulator may be used in an amplifier to direct the optical data signals through a double-pass portion of the amplifier. A reflector at the end of the double-pass portion of the amplifier may direct forward-propagating optical data signals from the circulator in the backwards direction. Optical components such as spectral filters, and attenuators, gain stages, access ports, and other components may be located in the double-pass portion. A control unit may be used to suppress gain transients in the double-pass portion.