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:
Apr. 26, 2011
Filed:
Jun. 07, 2006
Jaemyoung Lee, Seoul, KR;
Je-soo Ko, Daejon, KR;
Jaemyoung Lee, Seoul, KR;
Je-Soo Ko, Daejon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A clock extracting apparatus is provided. In the clock apparatus, two frequency components are made to have an equal magnitude by adjusting a temperature and current applied to an FP LD, and a clock signal is extracted by beating the two frequency components having the equal magnitude. The clock extracting apparatus includes: a circulator for changing a direction of an inputted optical signal; an adjuster for adjusting a characteristic and wavelength of a spectrum; and a clock extractor for selecting two frequency components having different magnitudes on the spectrum of the inputted optical signal, receiving an adjusted signals in which magnitudes of the two frequency components are made equal by the adjuster, making the two frequency components have an equal magnitude, and extracting a clock signal by beating the two frequency components having the equal magnitude.