Quantum dot SOA input power dynamic range improvement for differential-phase encoded signals.
Experimentally we find a 10 dB input power dynamic range advantage for amplification of phase encoded signals with quantum dot SOA as compared to low-confinement bulk SOA. An analysis of amplitude and phase effects shows that this improvement can be attributed to the lower alpha-factor found in QD SOA.
Vallaitis
T
T
Institute of Photonics and Quantum Electronics, Karlsruhe Institute of Technology (KIT), Engesserstr. 5,76131 Karlsruhe, Germany. thomas.vallaitis@kit.edu
Bonk
R
R
Guetlein
J
J
Hillerkuss
D
D
Li
J
J
Brenot
R
R
Lelarge
F
F
Duan
G H
GH
Freude
W
W
Leuthold
J
J
D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D045663:Quantum Dots; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*