Radiation from Structured-Ring Resonators

Two-curve-shaped biosensor using photonic crystal nano-ring resonators

We design a novel nano-ring resonator using two-dimensional photonic crystal (2D-PhC), for bio-sensing applications. The structure of biosensor is created by two-curve-shaped ring resonator which sandwiched by two waveguides. These are configured by removing one row of air holes. The refractive index of sensing hole is changed by binding an analyte. Hence, intensity of the transmission spectrum...

Tunable Superconducting Split Ring Resonators

Second-harmonic generation from complementary split-ring resonators.

We present experiments on second-harmonic generation from arrays of magnetic split-ring resonators and arrays of complementary split-ring resonators. In both cases, the fundamental resonance is excited by the incident femtosecond laser pulses under normal incidence, leading to comparably strong second-harmonic signals. These findings are discussed in terms of Babinet's principle and in terms of...

Suppression of radiation loss by hybridization effect in two coupled split-ring resonators

T. Q. Li,1 H. Liu,1,* T. Li,1 S. M. Wang,1 J. X. Cao,1 Z. H. Zhu,1 Z. G. Dong,1 S. N. Zhu,1 and X. Zhang2 1Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China 2Nanoscale Science and Engineering Center, University of California, 5130 Etcheverry Hall, Berkeley, California 94720-1740, USA Received 30 March 2009; ...

Efficient Radiation by Electrically Small Antennas made of Coupled Split-ring Resonators

In this paper, coupled split-ring resonators (SRRs) are used to construct the electrically small antennas. We show that through strong magnetic coupling, the coupled SRRs composite can oscillate at a wavelength much larger than its total size. Due to its magnetic dipole feature, the coupled SRRs composite allows the electromagnetic (EM) power to radiate and hence forms the electrically small an...