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Axial Field Permanent Magnet Motor (AFPM) can be easily integrated into wheel-hub motor of Electrical Vehicle (EV) as impact structure and light weight. Improved hexagonal asymmetry coil is presented in Printed Circuit Board (PCB) stator of coreless AFPM. Geometry parameters of coil shape is optimized. According to the structure characteristics of coreless AFPM, dimension formulas of PCB coil are...
A broadband thermo-optically tuned Mach-Zehnder based SOI switch is designed to operate in O-band with integrated resistive heaters and wavelength insensitive 3-dB couplers. The switch enables >30 dB extinction ratio over 100 nm wavelength range with 9.8 mW/FSR thermal tuning efficiency.
An FPGA-based centralized controller for a low-port 4×4 SiP multi-stage MZI-based switch is experimentally investigated with 10 Gb/s payload data. Packet contention resolutions and scheduling latencies are studied.
CMOS compatible photonic integrated circuits have gained great attentions in short haul interconnects applications because of the promises to tackle the issues of traditional copper interconnects. Towards the monolithic integration of electronics and photonics, lots of efforts have been made to decrease the device footprint by using surface plasmon polaritons (SPPs), in order to enhance performances...
To explore the potentials of hybrid plasmonics, ultrasharp 90 degree bends and resonators based on silicon waveguide and hybrid plasmonic waveguides are simulated and analyzed. Experimental demonstrations of ring and donut resonators based on hybrid plasmonics are also presented.
Silicon nanophotonics became recently a very promising solution for high-speed signal transmission and processing with high bandwidth and very compact size, even for multifunctional integrated structures. With sub-micron waveguide cross section and bending radius down to 2 μm with acceptable losses (0.04 dB/90º bend) these structures give promising perspectives for electronic — photonic integration...
Si-based metallic whispering gallery mode disks with 0.5 µm and 1 µm radii are theoretically analyzed and experimentally demonstrated. Estimated Purcell factor is around 127±42. Thermo-tuning of the device is also presented.
Silicon-based integrated photonics became a very attractive technology for guiding and manipulating of light in highly integrated structures due to the large index contrast between silicon and cladding materials allowing for very high mode confinement. Moreover, these structures can be realized by conventional planar CMOS techniques. Different passive devices based on Si nanowire waveguides have been...
A 170 nm wide hybrid plasmonic waveguide with a loss of 0.08 dB/µm is demonstrated experimentally. Directional couplers with different gaps and microdisks with 0.5 µm radius based on such waveguides are also presented.
We presented a set of fabricated devices based on silicon nanowire waveguides in application to telecom and optical interconnects. New developments in form of hybrid plasmonic waveguides allowing for sub-wavelength light confinement are also included.
We propose a new type of grating-assisted microring (GAMR) structure with Bragg gratings placed on microring's arms. Two Fabry-Perot resonances interact with microring resonance, resulting in GAMR's unique amplitude and phase spectra. The structure's characteristics are analytically studied using coupled mode theory and numerically verified by 2D-FDTD. With proper cavity lengths, GAMR exhibits an...
Asymmetric transparent characteristics of parallel cascaded dual detuning microring resonators are investigated in forms of the center cavity detuning, the unbalanced coupling coefficients and the unbalanced loss of dual resonators.
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