Optical signal regeneration and amplification of M-PSK and M-QAM modulation formats using reconfigurable wavelength selective processors and phase-sensitive amplifiers

摘要

A method for regenerating optical signal includes determining a source optical signal to be regenerated, adding a first pump optical signal and a second pump optical signal to the source optical signal to yield an intermediate optical signal, creating a first conjugate optical signal and a second conjugate optical signal from the intermediate optical signal, and performing degenerate phase-sensitive amplification utilizing the first conjugate optical signal, the second conjugate optical signal and the source optical signal to yield an output optical signal. The source optical signal is modulated with a multilevel modulation format. Each conjugate optical signal has a phase that is a conjugate of a multiple of the phase of the source optical signal.

主权项

1. A method for regenerating and amplifying optical signals, comprising:
determining a source optical signal to be regenerated and amplified, the source optical signal modulated using a multilevel modulation format; adding a first pump optical signal and a second pump optical signal to the source optical signal to yield an intermediate optical signal; determining a level of multilevel modulation used to modulate the source optical signal; and based on the determined level, selecting a first pair of conjugate optical signals from a plurality of pairs of conjugate optical signals, wherein:
the first pair comprises a first conjugate optical signal and a second conjugate optical signal, each conjugate optical signal having a phase that is a conjugate of a multiple of the phase of a source optical signal;within a given pair of conjugate optical signals, the phase of each conjugate optical signal is equal to the same negative multiple of the phase of the input optical signal; andthe negative multiple of the phase of the source optical signal for each pair is unique with respect to the other pairs; creating the first conjugate optical signal and the second conjugate optical signal from the intermediate optical signal; and performing degenerate phase-sensitive amplification utilizing the first conjugate optical signal, the second conjugate optical signal and the source optical signal to yield an output optical signal.