Miniature Mach-Zehnder InGaAsP Quantum Well Waveguide Interferometers for 1.3microns.
01 January 1990
We demonstrate electro-optic Mach-Zehnder interferometers with active lengths as small as 350microns. These strip-loaded waveguide devices utilize the electrooptic effect in InGaAsP/InP quantum wells to achieve pi phase shift with single arm drive voltages of 12 V and 6 V drive in push-pull operation.