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40 Gb/s NRZ-DQPSK data wavelength conversion with amplitude regeneration using four-wave mixing in a quantum dash semiconductor optical amplifier

Date
2016
Abstract
Differential quadrature phase shift keying (DQPSK) modulation is attractive in high-speed optical communications because of its resistance to fiber nonlinearities and more efficient use of fiber bandwidth compared to conventional intensity modulation schemes. Because of its wavelength conversion ability and phase preservation, semiconductor optical amplifier (SOA) four-wave mixing (FWM) has attracted much attention. We experimentally study wavelength conversion of 40 Gbit/s (20 Gbaud) non-return-to-zero (NRZ)-DQPSK data using FWM in a quantum dash SOA with 20 dB gain and 5 dBm output saturation power. Q factor improvement and eye diagram reshaping is shown for up to 3 nm pump-probe detuning and is superior to that reported for a higher gain bulk SOA.
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Description
peer-reviewed
Publisher
Citation
Frorntiers of Optoelectronics;9 (3), pp. 341-345
Collections
Electronic & Computer Engineering
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Connolly_2016_data.pdf
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Keywords
differential quadrature phase shift keying (DQPSK), phase modulation, quantum-dash, semiconductor optical amplifier (SOA), four-wave mixing (FWM), wavelength conversion
ULRR Identifiers
https://hdl.handle.net/10344/6029
 https://doi.org/10.34961/3653
Funding code
Funding Information
Science Foundation Ireland (SFI)
Sustainable Development Goals
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