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

作　　者：Michael J. CONNELLY Lukasz KRZCZANOWICZ Pascal MOREL Ammar SHARAIHA Francois LELARGE Romain BRENOT Siddharth JOSHI Sophie BARBET 

机构地区：[1]Optical Communications Research Group, Department of Electronic and Computer Engineering, University of Limerick, Limerick, Ireland [2]Lab-STICC, UMR CNRS 6285, Ecole Nationale d'Ingenieurs de Brest CS 73862, 29238 Brest Cedex 3, France [3]Alcatel Thales III-V Laboratory, Route Departementale, 128, 91767 Palaiseau, France

出　　处：《Frontiers of Optoelectronics》2016年第3期341-345,共5页光电子前沿（英文版）

基　　金：Acknowledgements This research was supported by Science Foundation Ireland Investigator Grant 09/IN.1/I2641.

摘　　要：Differential quadrature phase shift keying （DQPSK） modulation is attractive in high-speed optical communications because of its resistance to fiber non-linearities 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.Differential quadrature phase shift keying （DQPSK） modulation is attractive in high-speed optical communications because of its resistance to fiber non-linearities 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.

关 键 词：differential quadrature phase shift keying （DQPSK） phase modulation quantum-dash semiconductor optical amplifier （SOA） four-wave mixing （FWM） wavelength conversion 

分 类 号：TN722[电子电信—电路与系统] TN929.1