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. 31, 2001
Filed:
Jun. 28, 1999
Yong-Hoon Kang, Koyang-shi, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
An optical SNR (Signal-to-Noise Ratio) measurer in a wavelength division multiplexing optical transmitting device. In the optical SNR measurer, a wavelength division demultiplexer demultiplexes an optic signal wavelength-division-multiplexed from a plurality of signal channels into optical signals of the signal channels and an optical signal of a noise channel in the vicinity of the signal channels and a different wavelength, an optical tap separates a predetermined percentage of an optical signal of signal channel adjacent to the noise channel among the separated signal channels, a first optical detector detects the optical signal separated by the optical tap and converts the detected optical sign to an electrical signal, a second optical detector detects the optical signal of the noise channel an converting the detected optical signal to an electrical signal, and an operating unit obtains an optical SNR by calculating a ratio of the strength of the electrical signal received from the first optical detector to that of the electrical signal received from the second optical detector.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile