40 Gb/s NRZ-DQPSK data wavelength conversion with amplitude regeneration using four-wave mixing in a quantum dash semiconductor optical amplifier
| Michael J. CONNELLY1*,Lukasz KRZCZANOWICZ1,Pascal MOREL2,Ammar SHARAIHA2,Francois LELARGE3,Romain BRENOT3,Siddharth JOSHI3,Sophie BARBET3 |
1. Optical Communications Research Group, Department of Electronic and Computer Engineering, University of Limerick, Limerick, Ireland
2. Lab-STICC, UMR CNRS 6285, École Nationale d’Ingénieurs de Brest CS 73862, 29238 Brest Cedex 3, France
3. Alcatel Thales III–V Laboratory, Route Departementale, 128, 91767 Palaiseau, France |
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| 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.Keywords differential quadrature phase shift keying (DQPSK) phase modulation quantum-dash semiconductor optical amplifier (SOA) four-wave mixing (FWM) wavelength conversion Corresponding Authors: Michael J. CONNELLY Just Accepted Date: 19 August 2016 Online First Date: 06 September 2016 Issue Date: 28 September 2016 |
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| Cite this article: |
| Michael J. CONNELLY,Lukasz KRZCZANOWICZ,Pascal MOREL, et al. 40 Gb/s NRZ-DQPSK data wavelength conversion with amplitude regeneration using four-wave mixing in a quantum dash semiconductor optical amplifier[J]. Front. Optoelectron., 2016, 9(3): 341-345. |
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