Extinction Ratio Improvement and Negative Bit-Error-Rate Penalty in Mach–Zehnder Interferometric Wavelength Converter for Optical 2R Regeneration

概要

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We have fabricated a semiconductor optical amplifier-based Mach–Zehnder interferometric wavelength converter with preamplifiers. For 2R regeneration, we have measured the extinction ratio (ER) and the bit-error-rate (BER) penalty of the wavelength-converted signal by optimizing the applied currents to the preamplifiers in varying the ER of a non-return-to-zero input signal at 10 Gbit/s. The ER was more improved and the BER showed a larger negative power penalty for an input with a smaller ER. For a typical input signal with a 5 dB ER, the ER improvement was 5.5 dB and the power penalty was $-2.6$ dB.
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
2005-11-15