End-to-end chromatic dispersion characterization of...

Details End-to-end chromatic dispersion characterization of... End-to-end chromatic dispersion characterization of...

2007-05-23

2010-10-05

Pascal, Leslie (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S159000

Reexamination Certificate

active

07809271

ABSTRACT:
An economic way of determining the chromatic dispersion along a link of a DWDM network is provided. A transmitter modulates the output signals of two lasers operating at two different wavelengths and the modulated output signals are sent into the link. Detectors at each one of a plurality of detection sites along the link determine a phase difference in modulation between the output signals of the two lasers. The chromatic dispersion for each detection site can be calculated from the modulation frequency and determined phase differences at that site.

REFERENCES:
patent: 5969806 (1999-10-01), Bergano
patent: 2001/0050767 (2001-12-01), Babin et al.
patent: 2002/0044322 (2002-04-01), Blumenthal et al.
patent: 2002/0186437 (2002-12-01), Sasaoka
patent: 60140136 (1985-07-01), None

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