Patent · US Active

Optical E-field modulation using a directly driven laser

US7680420B1 · kind B1 · utility

8Cited by

24References

10Claims

0Family size

Assignee

Nortel Networks Limited · CA

Inventors

Dave Walker · Ottawa, CA
Kim B. Roberts · Ottawa, CA
Maurice O'Sullivan · Ottawa, CA
Leo Strawczynski · Ottawa, CA
James Whiteaway · Sawbridgeworth, GB
Christopher Fludger · Nuremberg, DE
Han Henry Sun · Ottawa, CA
Adrien Comeau · Ottawa, CA

Key dates

Filing date	Jun 21, 2004
Grant date	Mar 16, 2010
Priority date	—
Expiry date	Feb 18, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04B10/25137
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A method of synthesizing a modulated optical signal using a laser cascaded with an amplitude modulator. A phase drive signal VF(t) is derived for driving the laser to generate an optical carrier signal with a desired phase φ(t). An amplitude drive signal VS(t) is then derived for driving the amplitude modulator to impose a desired amplitude S(t) onto the optical carrier signal generated by the laser. The amplitude drive signal VS(t) is compensated for amplitude modulation of the optical carrier signal generated by the laser.

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