ETRI-Knowledge Sharing Plaform

KOREAN
논문 검색
Type SCI
Year ~ Keyword

Detail

Journal Article Optimization of Operating Conditions in 112-Gb/s Polarization-Multiplexed 16-QAM Optical Modulation
Cited 3 time in scopus Download 0 time Share share facebook twitter linkedin kakaostory
Authors
Sun Hyok Chang, Hwan Seok Chung, Kwangjoon Kim
Issue Date
2011-06
Citation
IEEE Photonics Technology Letters, v.23, no.11, pp.724-726
ISSN
1041-1135
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/LPT.2011.2132126
Project Code
10MI1700, 100Gbps Ethernet and optical transmission technology development, Kim Kwangjoon
Abstract
In this letter, we analyze a 16-ary quadrature amplitude modulation (16-QAM) optical signal generated by applying four-level electrical signals to a single in-phase/quadrature (IQ)-modulator. The amplitude of optical output of the MachZehnder modulator (MZM) in the IQ-modulator needs to be carefully adjusted, and the limited extinction ratio of MZM results in unwanted phase offset. Required optical signal-to-noise ratio is estimated in the 112-Gb/s polarization-division-multiplexed (PDM) 16-QAM signal by numerical simulations with various amplitudes of the electrical modulation signals. Optimal operating conditions are found to guarantee the best performance of the received PDM 16-QAM signal. © 2011 IEEE.
KSP Keywords
16 quadrature amplitude modulation(16QAM), 16-ary quadrature amplitude modulation, Best performance, Electrical modulation, Electrical signal, IQ modulator, In-phase, Mach-Zehnder(MZ), Numerical simulations, Operating conditions, Optical Signal-To-Noise Ratio(OSNR)