Sensitivity improvement using amplified optical self-coherent detection in an optical OFDM system

2009 ◽  
Author(s):  
Kai-Ming Feng ◽  
Rung-Ting Shiu ◽  
Yu-Wen Huang ◽  
Wei-Ren Peng
Keyword(s):  
Coherent Detection ◽  
Ofdm System ◽  
Sensitivity Improvement ◽  
Optical Ofdm

Design of Optical I/Q Modulator Using Dual-drive Mach-Zehnder Modulators in Coherent Optical-OFDM System

2018 ◽  
Vol 39 (2) ◽  
pp. 155-159 ◽  
Author(s):  
Monika Nehra ◽  
Deepak Kedia
Keyword(s):  
High Speed ◽  
Dispersion Compensation ◽  
Optical Power ◽  
Optical Spectra ◽  
Coherent Detection ◽  
High Rate ◽  
Q Factor ◽  
Ofdm System ◽  
Optical Ofdm ◽  
Simulation Results

AbstractA CO-OFDM system combines the advantages of both coherent detection and OFDM modulation for future high speed fiber transmission. In this paper, we propose an I/Q modulation technique using dual-drive MZMs for high rate 10 Gb/s CO-OFDM system. The proposed modulator provides 10.63 dBm improved optical spectra compared to a single dual-drive MZM. The simulation results in terms of BER and Q factor are quite satisfactory upto a transmission reach of 3,000 km and that to without making use of any dispersion compensation. A BER of about 8.03×10−10and 15.06 dB Q factor have been achieved at −10.43 dBm received optical power.

Performance monitoring on the orthogonality among the multisubcarriers of an all-optical OFDM system

2009 ◽  
Author(s):  
Shumin Zou ◽  
Nan Chi ◽  
Yufeng Shao ◽  
Xi Zheng ◽  
Junwen Zhang ◽  
...  
Keyword(s):  
Performance Monitoring ◽  
Ofdm System ◽  
All Optical ◽  
Optical Ofdm

An improved least square channel estimation algorithm for coherent optical OFDM system

Optik ◽  
2013 ◽  
Vol 124 (23) ◽  
pp. 5937-5940 ◽  
Author(s):  
S. Zhang ◽  
C.L. Bai ◽  
Q.L. Luo ◽  
L. Huang ◽  
F.F. He
Keyword(s):  
Channel Estimation ◽  
Estimation Algorithm ◽  
Least Square ◽  
Ofdm System ◽  
Square Channel ◽  
Optical Ofdm

Optimization of pilot interval design in direct-detected optical OFDM system

2012 ◽  
Vol 285 (13-14) ◽  
pp. 3075-3081 ◽  
Author(s):  
Fan Li ◽  
Zizheng Cao ◽  
Guangqian Wen ◽  
Jiangnan Xiao ◽  
Jianjun Yu ◽  
...  
Keyword(s):  
Ofdm System ◽  
Optical Ofdm
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