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:
Feb. 14, 2012
Filed:
Dec. 06, 2006
Chun Ju Youn, Daejeon, KR;
Tae Gon Noh, Daejeon, KR;
Jong Cheol Hong, Daejeon, KR;
Heon OH Kim, Gyeongju, KR;
Taehyoung Zyung, Daejeon, KR;
Chun Ju Youn, Daejeon, KR;
Tae Gon Noh, Daejeon, KR;
Jong Cheol Hong, Daejeon, KR;
Heon Oh Kim, Gyeongju, KR;
Taehyoung Zyung, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided are an auto-compensating quantum cryptography transceiver and method of transmitting a quantum cryptography key at a high speed. A quantum cryptography transmitter includes a wavelength converter, an optical attenuator, an optical phase modulator, and a Faraday mirror. A quantum cryptography receiver includes a polarization beam splitter, an optical coupler, an optical filter, and a photon detector. Thus, a limit of a transmission rate caused by Rayleigh scattering of an optical fiber can be overcome.