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:
Oct. 17, 2006
Filed:
Jan. 20, 2005
Young Tae Byun, guri-si, KR;
Jae Hun Kim, Seoul, KR;
Young Min Jhon, Seoul, KR;
Seok Lee, Seoul, KR;
Deok Ha Woo, Seoul, KR;
Sun Ho Kim, Seoul, KR;
Jong Chang Yi, Seoul, KR;
Young Tae Byun, guri-si, KR;
Jae Hun Kim, Seoul, KR;
Young Min Jhon, Seoul, KR;
Seok Lee, Seoul, KR;
Deok Ha Woo, Seoul, KR;
Sun Ho Kim, Seoul, KR;
Jong Chang Yi, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
The present invention relates to an apparatus and a method for realizing all-optical NOR logic device using the gain saturation characteristics of a semiconductor optical amplifier(SOA). More particularly, the invention relates to a 10 Gbit/s all-optical NOR logic device among all-optical logic devices, in which a signal transmitted from a given point of an optical circuit such as an optical computing circuit is used as a pump signal and a probe signal. The method for realizing an all-optical NOR logic device using the gain saturation characteristics of the SOA according to the present invention comprises the steps of: utilizing A+B signal which couples together an input signal pattern A () and an input signal pattern B () as a pump signal (); utilizing a probe signal () by generating a clock signal out of said input signal pattern A (); and obtaining a Boolean equation {overscore (A+B)} by making said probe signal and said pump signal incident upon the SOA simultaneously from the opposite direction. The all-optical logic device according to the present invention has a simple construction since it is realized through the XGM (Cross Gain Modulation) method which utilizes the gain saturation characteristics. Also, it is expected that the method employed in the present invention could be used for realizing other all-optical logic circuits and devices.