Optical equalization of multi-level symbol constellations

Details Optical equalization of multi-level symbol constellations Optical equalization of multi-level symbol constellations

2007-06-29

2010-06-08

Bolda, Eric (Department: 3663)

Optical: systems and elements

Optical amplifier

Correction of deleterious effects

C398S208000, C398S211000, C398S214000, C375S234000, C375S235000, C375S308000

Reexamination Certificate

active

07733562

ABSTRACT:
A method of optically equalizing a multi-level (amplitude or phase) optical signal through the effect of an optical equalizer wherein the optical equalizer (OEQ) is placed at either a transmission end or a receiver end of the optical communications link and a tap delay characteristic of the OEQ need not be determined by symbol spacing, rather it may advantageously be adjusted to desirably compensate non-linear mapping performed in the modulation process or simultaneous operation on a plurality of wavelength division multiplexed (WDM) channels.

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Winzer et al. (“107-Gb/s Optical Signal Generation Using Electronic Time-Division Multiplexing”, Journal of Lightwave Technology, vol. 24, No. 8, pp. 3107-3113, Aug. 2006.

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