Q factor Dependency on Optical and Electrical Bandwidths of the Receiver

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Q factor Dependency on Optical and Electrical
Bandwidths of the Receiver

• Seminar In
• Fiber Optics Communication Systems
• Presented By
• Yaniv Leitner Nir Simon

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System Description
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Calculation Method
Input Random Series White Gaussian Noise
Filtering In time domain Sample
Optimization of sample point Normal PDF
Calculate mean std of 1 and 0 BER
Overlap of the two PDFs Q Factor Using
known relation
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Filter Design Raised Cosine
Bandwidth 21 GHz Roll-off Factor 0.5
Time Domain
Frequency Domain
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RZ NRZ
RZ Gaussian, FWHM 30psNRZ Raised Cosine,
roff 0.1
RZ
0 0 1 0 0 1 1 1 1 0 1 0 0 1 1 0
NRZ
Results Taken in HIGH OSNR for visualization
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Normal PDF
Results Taken in LOW OSNR for visualization
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RZ - Q Factor Penalty vs. Bopt Belec
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NRZ - Q Factor Penalty vs. Bopt Belec
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Q Penalty vs. Belec GHz
NRZ gt RZ
Q factor Penalty dB
Belec
Bopt Taken 90 GHz
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Q Penalty vs. Bopt GHz
NRZ gt RZ
Q factor Penalty dB
Bopt
Belec Taken 13 GHz
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Using RZ vs. NRZ Modulation