Nonlinear device comprising a spectrally broadening fiber

Details Nonlinear device comprising a spectrally broadening fiber Nonlinear device comprising a spectrally broadening fiber

2006-11-21

2006-11-21

Leung, Christina Y (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S147000

Reexamination Certificate

active

07139478

ABSTRACT:
Embodiments of the invention include system for monitoring the effectiveness of pulse shaping in a nonlinear optical fiber (40). The spectral content of the pulse, after passing through the nonlinear fiber (40), provides an indication of how effectively the pulse was regenerated. A portion of the pulse exiting the nonlinear fiber is tapped off and its pulse energy is measured in at least one selected spectral region. The selected spectral region is one in which the pulse tends to gain energy when effective regeneration is taking place. The information concerning the effectiveness of pulse shaping in a nonlinear optical fiber is fed back to dynamically change the residual dispersion at the regenerator input. The spectral measurement leads to a control signal (48) to indicate a level of performance of the system, or to improve the performance of the system by adjusting an operational parameter.

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patent: 2002/0044322 (2002-04-01), Blumenthal et al.

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