Offset-Quantum-Well-Based Integrated Stokes Vector Modulator on InP

We demonstrate an offset-quantum-well-based Stokes vector modulator (SVM) on InP with compressively strained InGaAsP/InGaAsP multiple-quantum wells (MQWs). Tuning the applied voltages to the phase modulators, arbitrary state-of-polarization (SOP) is generated at the output. A single metal-organic chemical vapor deposition (MOCVD) regrowth step is employed for integrating a pair of passive polarization converters (PCs) and active MQW-based polarization-dependent phase modulator (PD-PM) sections. All components are concatenated in series on an offset-quantum well (OQW) platform. A 3.5-mm-long SVM has a PD-PM with half-wave voltage V
_π
of 14 V and V
_π
L of 2.1 V.cm.