A novel triple-band filter using triple-mode substrate integrated waveguide (SIW) resonator is presented in this paper. The proposed resonator consists of a square cavity with two additional metallic vias that split the first pair of degenerate modes (TE201 and TE102) at the diagonal of the cavity. Triple-band response is achieved by TE101, TE201 and TE102. The center frequencies of the first b...

We propose and demonstrate a self-coupled micro-ring resonator for resonance splitting by mutual mode coupling of a cavity mode and a counter-propagating mode in a silicon-on-insulator platform. The resonator is constructed with a self-coupling region that can excite a counter-propagating mode. We experimentally study the effect of self-coupling on the resonance splitting, resonance extinction,...

We report a Silicon nano-opto-mechanical device in which a nanomechanical doubly-clamped beam resonator is integrated to an optical microdisk cavity. Small flexural oscillations of the beam cause intensity modulations in the circulating optical field in the nearby microdisk cavity. By monitoring the corresponding fluctuations in the cavity transmission via a fiber-taper, one can detect these os...

Introduction The majority of RF coils are formed from inductive lengths of copper in various geometries, which are tuned to resonance by incorporation of appropriate capacitors. Volume coils are based on geometries which have a (co)-sinusoidal variation in azimuthal current distribution to produce a homogeneous transverse RF field [1]. An alternative approach is to design a cavity resonator, in...

Cavity quantum electrodynamics (QED), the study of interaction between quantized emitters and photons confined in an optical cavity, is important tool for science computing, networking, synthetic matter. In atomic cavity QED, this approach typically relies upon ultrahigh vacuum chamber that hosts a cold trapped ensemble cavity. Upgrading necessitates months-long laborious process removing exter...

The primary proton beam for the production of the intense antiproton beam required by FAIR will be provided by a dedicated 70 MeV, 35 mA, 325 MHz Injector. This will be the first linac based on coupled H-mode cavities [1]. A half scale model of the coupled CH modules 3 and 4 of the FAIR proton injector has been constructed and tested. Fabrication of a full scale high power cavity is scheduled f...

Overview of frequency domain measurement techniques of the complex permittivity at microwave frequencies is presented. The methods are divided into two categories: resonant and non-resonant ones. In the first category several methods are discussed such as cavity resonator techniques, dielectric resonator techniques, open resonator techniques and resonators for non-destructive testing. The gener...

Due to the thermal expansivity of the material used in the Fabry-Perot resonator mirrors, the resonator cavity length can change and this might therefore have an impact on the resonant frequency during high-resolution spectroscopy measurements. Based on measurements and simulations, this paper discusses the influences of temperature on the precise determination of gas attenuation measured in a ...

Studying the interplay between multiple coupled mechanical resonators is a promising new direction in field of optomechanics. Understanding dynamics interaction can lead to rich effects, such as enhanced coupling and multi-body physics. In particular, multi-resonator optomechanical systems allow for distinct dynamical effects due optical cavity coherently resonators. Here, we study response two...

We consider a theoretical model for a nonlinear nanomechanical resonator coupled to a superconducting microwave resonator. The nanomechanical resonator is driven parametrically at twice its resonance frequency, while the superconducting microwave resonator is driven with two tones that differ in frequency by an amount equal to the parametric driving frequency. We show that the semiclassical app...