Abstract
We evaluate the performance of wavelength conversion based on injection locking
in a Fabry–Perot laser (FPL). We compare the bit error ratio (BER) of the original and
the converted signals at different optical signal to noise ratios (OSNRs). We study
experimentally both up- and down-conversion and show that wavelength conversion results
in slight BER improvement. This is due to the FPL power transfer function and also
absorption of TM polarization that results in noise reduction. Measurements of the noise
histograms on “1” and “0” bits confirm noise compression after conversion. We also study
the case of simultaneous dual-channel conversion (i.e., wavelength multi-casting) and
compare it with the single channel case. The BER performance of the dual-channel case
does not degrade compared to the input signal.
© 2010 IEEE
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