Quadrature Squeezing and IQ De-Multiplexing of QPSK Signals by Sideband-Assisted Dual-Pump Phase Sensitive Amplifiers

Mingyi GAO; Takayuki KUROSU; Karen SOLIS-TRAPALA; Takashi INOUE; Shu NAMIKI

doi:10.1587/transcom.E98.B.2227

Quadrature Squeezing and IQ De-Multiplexing of QPSK Signals by Sideband-Assisted Dual-Pump Phase Sensitive Amplifiers

Mingyi GAO, Takayuki KUROSU, Karen SOLIS-TRAPALA, Takashi INOUE, Shu NAMIKI

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High gain extinction ratio and stable control of the phase in phase sensitive amplification are fundamental to realize either phase regeneration or quadrature squeezing of phase modulated signals in an efficient and robust manner. In this paper, we show that a combination of our previously demonstrated “sideband-assisted” dual-pump phase sensitive amplifier with a gain extinction ratio of more than 25dB, and a phase-locked loop based stabilization technique, enable efficient QPSK quadrature squeezing. Its stable operation is exploited to realize phase de-multiplexing of QPSK signals into BPSK tributaries. The phase de-multiplexed signals are evaluated through measurement of constellation diagrams, eye diagrams and more importantly, BER curves. The de-multiplexed BPSK signals exhibited an OSNR penalty of less than 1dB compared to the back-to-back BPSK signals.

Publication: IEICE TRANSACTIONS on Communications Vol.E98-B No.11 pp.2227-2237

Publication Date: 2015/11/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E98.B.2227

Type of Manuscript: PAPER

Category: Fiber-Optic Transmission for Communications

Authors

Mingyi GAO
  National Institute of Advanced Industrial Science and Technology (AIST),Soochow University
Takayuki KUROSU
  National Institute of Advanced Industrial Science and Technology (AIST)
Karen SOLIS-TRAPALA
  National Institute of Advanced Industrial Science and Technology (AIST)
Takashi INOUE
  National Institute of Advanced Industrial Science and Technology (AIST)
Shu NAMIKI
  National Institute of Advanced Industrial Science and Technology (AIST)

Keyword

optical fiber communication, optical signal processing, optical phase sensitive amplifier, optical phase locked loop

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Mingyi GAO, Takayuki KUROSU, Karen SOLIS-TRAPALA, Takashi INOUE, Shu NAMIKI, "Quadrature Squeezing and IQ De-Multiplexing of QPSK Signals by Sideband-Assisted Dual-Pump Phase Sensitive Amplifiers" in IEICE TRANSACTIONS on Communications, vol. E98-B, no. 11, pp. 2227-2237, November 2015, doi: 10.1587/transcom.E98.B.2227.
Abstract: High gain extinction ratio and stable control of the phase in phase sensitive amplification are fundamental to realize either phase regeneration or quadrature squeezing of phase modulated signals in an efficient and robust manner. In this paper, we show that a combination of our previously demonstrated “sideband-assisted” dual-pump phase sensitive amplifier with a gain extinction ratio of more than 25dB, and a phase-locked loop based stabilization technique, enable efficient QPSK quadrature squeezing. Its stable operation is exploited to realize phase de-multiplexing of QPSK signals into BPSK tributaries. The phase de-multiplexed signals are evaluated through measurement of constellation diagrams, eye diagrams and more importantly, BER curves. The de-multiplexed BPSK signals exhibited an OSNR penalty of less than 1dB compared to the back-to-back BPSK signals.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E98.B.2227/_p

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@ARTICLE{e98-b_11_2227,
author={Mingyi GAO, Takayuki KUROSU, Karen SOLIS-TRAPALA, Takashi INOUE, Shu NAMIKI, },
journal={IEICE TRANSACTIONS on Communications},
title={Quadrature Squeezing and IQ De-Multiplexing of QPSK Signals by Sideband-Assisted Dual-Pump Phase Sensitive Amplifiers},
year={2015},
volume={E98-B},
number={11},
pages={2227-2237},
abstract={High gain extinction ratio and stable control of the phase in phase sensitive amplification are fundamental to realize either phase regeneration or quadrature squeezing of phase modulated signals in an efficient and robust manner. In this paper, we show that a combination of our previously demonstrated “sideband-assisted” dual-pump phase sensitive amplifier with a gain extinction ratio of more than 25dB, and a phase-locked loop based stabilization technique, enable efficient QPSK quadrature squeezing. Its stable operation is exploited to realize phase de-multiplexing of QPSK signals into BPSK tributaries. The phase de-multiplexed signals are evaluated through measurement of constellation diagrams, eye diagrams and more importantly, BER curves. The de-multiplexed BPSK signals exhibited an OSNR penalty of less than 1dB compared to the back-to-back BPSK signals.},
keywords={},
doi={10.1587/transcom.E98.B.2227},
ISSN={1745-1345},
month={November},}

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TY - JOUR
TI - Quadrature Squeezing and IQ De-Multiplexing of QPSK Signals by Sideband-Assisted Dual-Pump Phase Sensitive Amplifiers
T2 - IEICE TRANSACTIONS on Communications
SP - 2227
EP - 2237
AU - Mingyi GAO
AU - Takayuki KUROSU
AU - Karen SOLIS-TRAPALA
AU - Takashi INOUE
AU - Shu NAMIKI
PY - 2015
DO - 10.1587/transcom.E98.B.2227
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E98-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2015
AB - High gain extinction ratio and stable control of the phase in phase sensitive amplification are fundamental to realize either phase regeneration or quadrature squeezing of phase modulated signals in an efficient and robust manner. In this paper, we show that a combination of our previously demonstrated “sideband-assisted” dual-pump phase sensitive amplifier with a gain extinction ratio of more than 25dB, and a phase-locked loop based stabilization technique, enable efficient QPSK quadrature squeezing. Its stable operation is exploited to realize phase de-multiplexing of QPSK signals into BPSK tributaries. The phase de-multiplexed signals are evaluated through measurement of constellation diagrams, eye diagrams and more importantly, BER curves. The de-multiplexed BPSK signals exhibited an OSNR penalty of less than 1dB compared to the back-to-back BPSK signals.
ER -