We present an experimental and numerical study of a terahertz metamaterial with nonlinear response that is controllable via the relative structural positioning two stacked split ring resonator arrays. The first array fabricated on n-doped GaAs substrate second vertically above using polyimide spacer layer. Due to carrier dynamics, on-resonance transmission at 0.4 THz varies in manner incident p...

In this paper an electrostatically driven MEMS resonator with resonance and hysteresis characteristics is reported. The resonator begins to exhibit spring-hardening effect at ac excitation voltage of 105mV and dc bias voltage of 5V in vacuum at 50Pa. An extended hysteresis at low pressure and high excitation voltage during upsweep and downsweep of excitation frequency was observed. This charact...

We experimentally demonstrate controlled polarization-selective phenomena in a whispering gallery mode resonator. We observed efficient ( approximately 75%) polarization conversion of light in a silica microsphere coupled to a tapered optical fiber with proper optimization of the polarization of the propagating light. A simple model treating the microsphere as a ring resonator provides a good f...

Spontaneous parametric downconversion (SPDC) can be enhanced in double-channel side-coupled microring resonator structures, generating entangled photons spatially separated in different channels. The enhancement is even more drastic in single-channel side-coupled microring resonator structures, although the generated entangled photons are not spatially separated, and it might be most interestin...

Direct time-domain measurement of tunable optical delay in a silicon resonating structure is presented. The structure is composed by a double-ring resonator, whose spectrum has a narrow transparency peak with low group velocity analogous to that in electromagnetically induced transparency. Effective group indices from 90 to 290 are obtained by tuning the resonator thermally. The measurements ag...

Linear-array of circular split ring resonators (C-SRR) integrated wideband notched filtering horn antenna with very strong rejection-band is proposed in this article. The linear C-SRR array, consisting 3-sub arrays each having 4 identical C-SRR-elements, printed on a dielectric substrate and into the throat or waveguide-section standard X-band (Narada 641). Staggered arrangement multiple C-SRRs...

Free spectral range (FSR) of reflection spectrum micro-ring resonator restricts the improvement in user capacity optical code division multiple access (OCDMA) system using array. Vernier effects can expand FSR cascaded microring resonator. Based on vernier effect, a novel two-dimensional coherent en/decoder serially coupled dumbbell is proposed this paper. The theoretical model transmission for...

Metasurfaces could be very beneficial when elaborating solar cells to succeed in balancing between cost and efficiency. Thus, thin absorbers achieving high performance are attainable with the possibility use any material. In this work, a perfect absorber based on tungsten (W) metal-insulator-metal (MIM) metasurface is proposed. The MIM array consists of rectangular double split ring resonator (...

This paper proposes a Broadband Meta surface-based MIMO Antenna with High Gain and Isolation For 5G Millimeter applications. A single antenna is transformed into an array configuration to improve gain. As result, each made up of 1x2 element supplied by concurrent feedline. 9x6 Split Ring Resonator (SRR) elongated cell stacked above the gain eliminate coupling effects between components. The sub...