Parametric Amplification, Wavelength Conversion, and Phase Conjugation of a 2.048-Tbit/s WDM PDM 16-QAM Signal

We demonstrate polarization-independent parametric amplification of a 2.048-Tbit/s 8-WDM PDM 16-QAM signal and simultaneous wavelength conversion and phase conjugation in a highly nonlinear fiber. Two high-power continuous-wave pumps with orthogonal polarizations and counter-phase modulation are use...

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Bibliographic Details
Published in:Journal of lightwave technology 2015-04, Vol.33 (7), p.1286-1291
Main Authors: Hao Hu, Jopson, R. M., Gnauck, A. H., Dinu, M., Chandrasekhar, S., Chongjin Xie, Randel, Sebastian
Format: Article
Language:English
Subjects:
16-state quadrature amplitude modulation (16-QAM)
Amplification
Conversion
Fiber nonlinear optics
Fiber optical parametric amplification (FOPA)
four-wave mixing (FWM)
Gain
highly non-linear fiber (HNLF)
Noise levels
Optical fiber amplifiers
Optical fiber polarization
optical phase conjugation (OPC)
Optical signal processing
optical signal processing (OSP)
Optical wavelength conversion
Phase conjugation
Polarization
polarization diversity
Product data management
wavelength conversion
Wavelength division multiplexing
wavelength-division-multiplexing (WDM)
Wavelengths
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Summary:We demonstrate polarization-independent parametric amplification of a 2.048-Tbit/s 8-WDM PDM 16-QAM signal and simultaneous wavelength conversion and phase conjugation in a highly nonlinear fiber. Two high-power continuous-wave pumps with orthogonal polarizations and counter-phase modulation are used in the fiber optical parametric amplifier (FOPA) to achieve broadband flat gain, polarization independence, and high-quality idler generation. The polarization-independent FOPA is amplitude and phase preserving and has ~10 dB on-off gain for the signal and ~9 dB conversion efficiency for the idler with a 1-dB bandwidth of ~16 nm. Compared to the back-to-back case, the amplified signals and the wavelength-converted conjugates have mean Q 2 penalties of only 0.6 and 0.4 dB, respectively, with variances of Q 2 factors across all the wavelength-division-multiplexed channels of only 0.3 dB. This demonstration shows the great promise of optical signal processing techniques to simultaneously process large-capacity multiple-channel multilevel signals with almost no latency and potentially low power consumption.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2014.2370038