1,000-km polarization-interleaved WDM transmission of 20-Gbit/s QPSK signals on the frequency grid with 12.5-GHz channel spacing using digital coherent receiver

2007 ◽  
Author(s):  
Sang-Yuep Kim ◽  
K. Kikuchi
Keyword(s):  
Channel Spacing ◽  
Frequency Grid ◽  
Coherent Receiver ◽  
Wdm Transmission

320-Gb/s WDM transmission with 50-GHz channel spacing over 564 km of short-period dispersion-managed fiber (perfect cable)

2000 ◽  
Vol 12 (10) ◽  
pp. 1397-1399 ◽  
Author(s):  
H.S. Chung ◽  
H. Kim ◽  
S.E. Jin ◽  
E.S. Son ◽  
D.W. Kim ◽  
...  
Keyword(s):  
Channel Spacing ◽  
Short Period ◽  
Wdm Transmission

Influence of Channel Spacing on Ultra Long-Haul WDM Transmission of 8×112 Gb/s PS-QPSK Signals

2012 ◽  
Author(s):  
Markus Nölle ◽  
Johannes Karl Fischer ◽  
Lutz Molle ◽  
Carsten Schmidt-Langhorst ◽  
Colja Schubert
Keyword(s):  
Channel Spacing ◽  
Wdm Transmission

Effects of local oscillator on the performance of DP-QPSK WDM system with channel spacing of 37.5 GHz

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Neeraj Sharma ◽  
Sunil Agrawal ◽  
Vinod Kapoor ◽  
Sumit Budhiraja
Keyword(s):  
Optical Power ◽  
Local Oscillator ◽  
Narrow Channel ◽  
Laser Linewidth ◽  
Phase Shift Keying ◽  
Channel Spacing ◽  
Modulation Format ◽  
Quadrature Phase ◽  
Shift Keying ◽  
Frequency Grid

AbstractDual-polarization quadrature phase shift keying (DP-QPSK) modulation format is emerging as a main contender for 37.5 GHz frequency grid of WDM systems. However, the optical add drop multiplexers (OADMs) affect the performance of the system because of narrow channel spacing. The local oscillator (LO) is an important component of the digital coherent receiver. This paper analyzes the effects of LO parameter on the performance of the considered system. It is exhibited that optimum range of optical power and laser linewidth of the LO helps in improving the performance of the considered system.

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