Extinction ratio determination using duty cycle modulation

Details Extinction ratio determination using duty cycle modulation Extinction ratio determination using duty cycle modulation

2007-07-17

2007-07-17

Leung, Christina (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S197000

Reexamination Certificate

active

11263517

ABSTRACT:
An optical transmitter that determines and controls the extinction ratio of an optical signal by modulating the duty cycle of the optical signal. The transmitter obtains a signal from the monitor circuit that represents optical power emitted by the electro-optic transducer during normal conditions in which the duty cycle of the optical signal is between a bias high and bias low modulation condition. The transmitter also obtains a signal from the monitor circuit that represents optical power emitted during the bias high modulation condition in which the time at the optical high power level in the eye diagram is greater. Also, the transmitter obtains a signal that represents optical power emitted by the electro-optic transducer during the bias low modulation condition in which the time at the optical low power level in the eye diagram is greater. Based on these signals, the transmitter then derives the extinction ratio.

REFERENCES:
patent: 5502298 (1996-03-01), Geller
patent: 5535038 (1996-07-01), Hinch
patent: 6414974 (2002-07-01), Russell et al.
patent: 6459716 (2002-10-01), Lo et al.
patent: 6583910 (2003-06-01), Satoh
patent: 6993459 (2006-01-01), Carrick
patent: 2003/0141876 (2003-07-01), Mahgerefteh et al.
patent: 2005/0008050 (2005-01-01), Fischer et al.

Affiliated with

Also associated with

Rating

Extinction ratio determination using duty cycle modulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extinction ratio determination using duty cycle modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extinction ratio determination using duty cycle modulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3744709