Apparatus and method for realizing all-optical NOR logic device using gain saturation characteristics of a semiconductor optical amplifier
US7123407B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2005 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Apr 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/509
- WIPO fieldOptics
- WIPO sectorInstruments
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 (1100) and an input signal pattern B (0110) as a pump signal (1110); utilizing a probe signal (1111) by generating a clock signal out of said input signal pattern A (1100); 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 ut…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.