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Performance analysis of an all-optical wavelength converter based on XPM in semiconductor optical amplifiers

✍ Scribed by S.P. Majumder; B.C. Sarker; T. Yoshino

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
137 KB
Volume
35
Category
Article
ISSN
0030-3992

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✦ Synopsis

Performance analysis is carried out for an all-optical wavelength converter based on cross-phase modulation in two semiconductor optical ampliÿers (SOAs) arranged in a Mach-Zehnder interferometer conÿguration to evaluate the e ciency of conversion and the signal-to-crosstalk ratio (SCR) at the output of the converter. The results evaluated analytically for input non-return to zero signal at a bit rate of 10 Gb=s show that conversion is possible over a wavelength separation of 2 nm between the pump and the input wavelengths. It is further noticed that SCR of the order of 50 dB or more can be achieved at a bit rate of 10 Gb=s, optical ampliÿer bandwidth of 10 times bit rate and driving current of 600 mA when the input pump is 60% of saturation intensity. The range of wavelength conversion can further be increased by increasing the driving current.

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