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:
Mar. 13, 2001
Filed:
Aug. 04, 1999
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
An long-wavelength optical fiber amplifier includes an erbium doped optical fiber (EDF) for amplifying an input signal light having a wavelength in the range of 1580 nanometers (nm) using pump light, a pumping unit positioned in front of and to the rear of the erbium doped optical fiber, for supplying the pump light to the erbium doped optical fiber, and an amplified spontaneous emission (ASE) reflecting unit positioned in front of the pumping unit, for coupling backward amplified spontaneous emission generated in the erbium doped optical fiber to the long-wavelength input signal light and inputting again the same to the erbium doped optical fiber. Fewer laser diodes and optical devices are necessary in amplifying an signal light having a long wavelength, by providing a reflector for reflecting amplified spontaneous emission. Also, the gain is increased in the case when the power of an input signal is small.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile