Multi-Stage Wavelength Conversion by Cascaded SSB Modulators

Abstract

We present the first demonstration of multiple-stage wavelength conversion using cascaded LiNbO₃ Mach-Zehnder SSB modulators. Wavelength is accurately shifted by 18GHz at each stage. 72GHz frequency shift with the relative intensity noise (RIN) value of -144.5dB/Hz is achieved by four stages. The achieved equivalent noise figure is 7.5dB.