Patent · US Active

Optical amplitude modulation system capable of cancelling high order component

US7711215B2 · kind B2 · utility

5Cited by

11References

14Claims

0Family size

Assignee

NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY · JP

Inventors

Tetsuya Kawanishi · Tokyo, JP
Masayuki Izutsu · Ibaraki, JP
Takahide Sakamoto · Kasai, JP
Masahiro Tsuchiya · Osaka, JP

Key dates

Filing date	Aug 30, 2006
Grant date	May 4, 2010
Priority date	—
Expiry date	Jul 3, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/2255
WIPO fieldOptics
WIPO sectorInstruments

Abstract

It is an object of the present invention to provide a DSB-SC system capable of suppressing a third order component. The DSB-SC modulation having high extinction ratio can be realized by adjusting the first order component, which is generated by applying a modulation signal (3fm), and the third order component, which is generated by applying a basic signal (fm), to have reversed phase and the same intensity level, and then by applying the first order component to the third order component, these two components cancel each other.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.