IEEE Photonics Technology Letters · 1995 · 12 citations · 8 references
EngineeringElectrical EngineeringMaterials ScienceOptoelectronicsPhotonicsSemiconductor DevicesDirectional CouplersOptoelectronic DevicesPolarization OpticsQuantum OptoelectronicsQuantum Well DevicesQuantum WellsCrosstalkOptical CouplersQuantum Well HeterostructuresQuantum Well StructuresStrained Quantum WellsTensile DeformationTensile StrainTensile Strength
Polarization-independent switching operation in a multi-quantum well directional coupler is obtained for the first time, with a bar-state crosstalk of -12 dB. By introducing tensile strain in an InGaAs-InP multi-quantum well, polarization-independent switching voltage is as small as 3 V, with the coupling length being 1.2 mm. The cross-state crosstalk that is obtained at zero-applied voltage, is less than -8 dB with respect to TE and TM polarized lights.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
8