Refractive Index, Temperature and Pressure of Elliptical Plasmonic Waveguide Resonator

This paper proposes the elliptical-shaped based on two-dimensional Metal-Insulator-Metal (MIM) plasmonic waveguide configuration with the sensor characteristics simulated by Finite-Element-Method (FEM). Temperature, refractive index, and pressure are evaluated in the structure by considering the transmission spectrum. As the temperature and refractive index increase, the corresponding curves shift to the right wavelengths. Simulation results show that resonant wavelength of nanocavity shifts to lower wavelength with increasing the pressure. It can be seen that the resonance curves between 1300nm to 1400nm are sharper than the other wavelengths in this structure. The sensitivity and the Figure of Merit (FOM) can be evaluated by considering the mentioned equations. The proposed structure could be applied to develop resonator applications with high sensitivity and tunable response.

422 Million intrinsic quality factor planar integrated all-waveguide resonator with sub-MHz linewidth

High quality-factor (Q) optical resonators are a key component for ultra-narrow linewidth lasers, frequency stabilization, precision spectroscopy and quantum applications. Integration in a photonic waveguide platform is key to reducing cost, size, power and sensitivity to environmental disturbances. However, to date, the Q of all-waveguide resonators has been relegated to below 260 Million. Here, we report a Si3N4 resonator with 422 Million intrinsic and 3.4 Billion absorption-limited Qs. The resonator has 453 kHz intrinsic, 906 kHz loaded, and 57 kHz absorption-limited linewidths and the corresponding 0.060 dB m−1 loss is the lowest reported to date for waveguides with deposited oxide upper cladding. These results are achieved through a careful reduction of scattering and absorption losses that we simulate, quantify and correlate to measurements. This advancement in waveguide resonator technology paves the way to all-waveguide Billion Q cavities for applications including nonlinear optics, atomic clocks, quantum photonics and high-capacity fiber communications.

Erratum: Demonstration of resonant phenomena analogous to Autler-Townes splitting, electromagnetically induced transparency and Fano resonances in a deformed waveguide resonator

In this erratum to the original paper [1] we correct an error in the calculation of the reflection and transmission spectra of the bent waveguide-based Fabry-Perot resonator. The error resulted from the neglect of cladding modes in the straight input and output sections before and after the resonator under study (Fig. 2a in the original paper). Although these modes do not contribute directly to the calculated reflected and transmitted power carried by the fundamental modes in the input and output sections, they must be taken into account for the correct computation of the reflection and transmission spectra of the resonator as was found out after the original paper had been published. In this erratum we provide the amended results as well as some corrections to the conclusions of the original paper.