Reduction of four-wave-mixing cross talk in WDM systems using unequally spaced channels

1993 ◽  
Author(s):  
Fabrizio Forghieri ◽  
Robert W. Tkach ◽  
Andrew R. Chraplyvy ◽  
Dietrich Marcuse
Keyword(s):  
Cross Talk ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Unequally Spaced

scholarly journals Effect of Four Wave Mixing in WDM Systems for Higher number of Channels

2013 ◽  
pp. 61-64
Author(s):  
A. Panda ◽  
D. P. Mishra
Keyword(s):  
Optical Networks ◽  
Cross Talk ◽  
Four Wave Mixing ◽  
Influential Factors ◽  
Access Networks ◽  
Wave Mixing ◽  
Channel Spacing ◽  
Early Design ◽  
Early Design Stages ◽  
Simulation Results

The integration of wireless and optical networks increases the capacity and mobility as well as decreases costs in the access networks. However, there are nonlinearity and obstacles preventing them from being perfect media. A serious issue for WDM systems is the presence of resonant four wave mixing (FWM) terms, as a result of interactions between different channels. FWM presents a major source of non-linear cross talk since they often fall near or on top of the desired signals. So the best solution is to avoid the FWM generation from early design stages. The effect of four wave mixing (FWM) as one of the influential factors in the WDM for RoF has been studied here using Optisystem. The investigation of FWM effect with different number of channels at various channel spacing has also been done. The simulation results reveal that the less number of users at input cause less FWM but in today’s technology, it is important for the circuit to handle WDM.

scholarly journals Modified Unequally Spaced Channels Wavelength Division Multiplexing System

2008 ◽  
pp. 68-78
Keyword(s):  
Wavelength Division Multiplexing ◽  
Bit Error Rate ◽  
Error Rate ◽  
Four Wave Mixing ◽  
The Other ◽  
Wave Mixing ◽  
Wavelength Division ◽  
Unequally Spaced ◽  
Frequency Spacing ◽  
Active Channels

The channels contributed in creating new pulse during the four-wave mixing (FWM) process are a subject of two features: the first is the fact that all channels are not working with probability %100 , but with p probability. Second, the bits transmitted are not all "1". Therefore, the equation of power generated using these features should be corrected. On the other hand, the use of equally spaced channels wavelength divisionmultiplexing (ESC WDM) system cause an increase in the number of new components generated that interfere with the active channels and increase the bit error rate. In order to reduce these interferences, we have provided an unequally spaced channels wavelength division-multiplexing (USC WDM) system composed of several sets. Each set consists of only four channels, which locations have been selected to cause no interferences between them. Neighboring sets are separated by a frequency spacing which should be large enough to reduce the interferences between the sets, andsmall enough to increase the total number of channels of the system.

Intensity and phase cross talk in degenerate four-wave mixing

1989 ◽  
Vol 6 (8) ◽  
pp. 1548 ◽  
Author(s):  
J. M. Fukumoto ◽  
L. M. Frantz ◽  
J. C. Brock
Keyword(s):  
Cross Talk ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Degenerate Four Wave Mixing

scholarly journals Cross talk free multi channel processing of 10 Gbit/s data via four wave mixing in a 1550 nm InAs/InP quantum dash amplifier

2008 ◽  
Vol 16 (23) ◽  
pp. 19072 ◽  
Author(s):  
A. Capua ◽  
S. O'duill ◽  
V. Mikhelashvili ◽  
G. Eisenstein ◽  
J. P. Reithmaier ◽  
...  
Keyword(s):  
Cross Talk ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Quantum Dash
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