We present a dextran modified silicon microring resonator sensor for high density antibody immobilization. An array of sensors consisting of three sensor rings and a reference ring was fabricated and its surface sensitivity and the limit of detection were obtained using polyelectrolyte multilayers. The mass sensitivity and the limit of detection of the fabricated sensor ring are 0.35 nm/ng mm a...

We have numerically investigated the unique effects of metallic nanoparticle on the ring resonator, especially multiple Au nanoparticles on the micro ring resonator with the 4-port configuration on chip. For the Au nanoparticle, because it has smaller real refractive index than air and large absorption refractive index, we found that there is a blue shift for the ring resonance wavelength, inst...

Integrated-optical (IO) micro-ring, -disk, and -sphere resonators have been long considered as a good candidate to enhance optical sensor performance. To the best of our knowledge, none of previous reported works [1]-[3] has explicitly attributed such (expected) enhancement to slow-light [4] phenomenon, i.e. a phenomenon where the group velocity of light is much lower than the light velocity in...

Abstract We review recent work on broadband RF channelizers based integrated optical frequency Kerr micro-combs combined with passive micro-ring resonator filters, microcombs having channel spacings of 200 and 49 GHz. This approach to realizing offers reduced complexity, size, potential cost for a wide range applications microwave signal detection.

in this paper, a new design of optical channel drop filter based on two- dimensional photonic crystal ring resonators with triangular lattice is proposed. the rods of this structure is silicon with the refractive index nsi=3.46 and the surrounding environment is air with the refractive index of nair=1.the widest photonic band gap obtains for the filling ratio of r/a = 0.2. the filter’s transmis...

The heterogeneous integration of lithium niobate photonic waveguide devices onto a silicon nitride platform via transfer-printing approach has been demonstrated for the first time. A fabrication process was developed to make free-standing membrane compatible with back-end integrated circuits. Micro-ring resonators in format were lithographically defined by using laser direct writing and plasma ...

Injection mode-locking combined with stretched Q-switching of a ring resonator are proposed and demonstrated as a promising approach for advanced, guide star lasers. The concept uses two Nd:YAG lasers, producing a macro-micro pulse-burst output, optimized for efficient sum-frequency generation. We demonstrate wavelength, bandwidth and timing control required to maximize the atmospheric Na fluor...