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We first-time demonstrate gray-scale control by pulse-width modulation for silicon thermo-optic (TO) phase shifters using monolithic MOSFET. This work enables simple and power efficient control of TO modules without using DAC and analog current drivers.
We report a novel method for measuring wide-band dispersion characteristics of electro-optic (EO) and thermo-optic (TO) switches based on a white-light interferometry. The dispersion spectra of the EO and TO coefficients of the optical switch materials over a wide wavelength can be determined with this method for potential applications of the switches to wide-band wavelength-division-multiplexed (WDM)...
This paper describes a 150 kJ compact pulsed power system (CPPS) for electrothermal chemical (ETC) accelerator on a vehicle. The CPPS provides pulsed electrical energy into a capillary plasma injector which generates plasma of tens of thousands K in temperature and has a nonlinear resistance value depending on the current. The design requirements of the CPPS are as follows: the maximum power of 200...
We demonstrate, for the first time, the vertical-injection depleted optical thyristor laser diode (VIDOT-LD) with InGaAs/InGaAsP MQW structure. The output peak wavelength is at 1578 nm and the lasing threshold current is 131 mA.
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