Title :
Experimental evaluation of 40 Gb/s NRZ-DQPSK data amplification using a semiconductor optical amplifier
Author :
Krzczanowicz, Lukasz ; Connelly, M.J.
Author_Institution :
Dept. of Electron. & Comput. Eng., Univ. of Limerick, Limerick, Ireland
Abstract :
DQPSK modulation has become particularly attractive in high-speed optical communications because of its resistance to fiber nonlinearities and its more efficient use of fiber bandwidth. We experimentally study the amplification of 40 Gbit/s (20 Gbaud) NRZ-DQPSK data by a semiconductor optical amplifier (SOA). The Q factors before and after amplification are measured. A bulk SOA with 21 dB gain and 10 dBm output saturation power is used. The Q factor of the demodulated data after amplification ranges from 5 to 7 with a maximum penalty of 0.7 dB compared to the back-to-back measurements.
Keywords :
optical fibre amplifiers; optical fibre communication; optical modulation; optical variables measurement; quadrature phase shift keying; semiconductor optical amplifiers; NRZ-DQPSK data amplification; SOA; back-to-back measurements; bit rate 40 Gbit/s; fiber bandwidth; fiber nonlinearity; gain 0.7 dB; gain 21 dB; high-speed optical communication; resistance nonlinearity; saturation power; semiconductor optical amplifier; Optical attenuators; Optical fiber amplifiers; Optical fiber communication; Optical interferometry; Optical polarization; Q-factor; Semiconductor optical amplifiers; DQPSK; phase modulation; semiconductor optical amplifier (SOA);
Conference_Titel :
Network and Optical Communications (NOC), 2013 18th European Conference on and Optical Cabling and Infrastructure (OC&i), 2013 8th Conference on
Conference_Location :
Graz
Print_ISBN :
978-1-4673-5821-7
DOI :
10.1109/NOC-OCI.2013.6582862
