New concept for a co-directional polarization insensitive SOA-based wavelength converter

VPI-simulation of a new all-optical wavelength converter is presented. It is based on interferometric effects in two Mach-Zehnder interferometers (MZI), parallel connected by polarization components (PCs). The PCs provide filtering between probe and signal wavelengths, and polarization-insensitive operation. Different efficiency values for PCs are supposed. Simulation shows wide operational range (10 dB) for the input power. Results obtained are also suitable for cascading these devices in optical networks (extinction ratio >10 dB, isolation >20 dB)

Wavelength conversion with polarisation labelling for rejection and isolation of signals (POLARIS)

VPI-simulation of a new all-optical wavelength converter is presented. It is based on interferometric effects in two Mach-Zehnder interferometers (MZI), parallel connected by polarization components (PLCs). The PCs provide filtering between probe and control wavelengths, and polarization-insensitive operatio

A compact integrated polarization splitter/converter in InGaAsP/InP

A novel design for an integrated passive polarization splitter/converter combination is presented. The device consists of a Mach-Zehnder interferometer with polarization converters in both arms. The device is analyzed using the transfer matrix method and fabricated in InGaAsP-InP. Measurement results show a splitting ratio of approximately 10 dB and a conversion of >90%. This device can be monolithically integrated with passive and active components

A single etch-step polarization splitter on InP/InGaAsP with increased width tolerance

A novel passive polarization splitter is fabricated, based on a tapered directional coupler. Modal birefringence is employed to selectively couple one polarization. The fabricated device shows a splitting ratio larger than 95% in agreement with simulations