In this paper, we present our theoretical and experimental work on hybrid plasmonic microdisks. The 170 nm wide
access waveguide is first simulated and characterized, and shows a propagation loss about 0.08 dB/μm. 3-D FDTD
simulations are then used to investigate the lower limit of the bending radius of the hybrid plasmonic microdisk.
Microdisks with radius around 500 nm are fabricated, characterized, and analyzed. The 5th and 4th order resonances are
experimentally observed around 1412 nm and 1625 nm. The extinction ratios of the two resonances are measured to be
5.5dB and above 10dB, respectively. The measured intrinsic quality factors are 350 and 110, respectively. Comparisons
are also made between the theoretical and experimental results. The demonstrated ultra-small hybrid plasmonic
microdisk may find applications in low-power-consumption modulators, nano laser cavities with large Purcell-factor,
molecule sensors, and others.
Silicon photonics is an emerging technology offering novel solutions in different areas requiring highly integrated
communication systems for optical networking, sensing, bio-applications and computer interconnects. Silicon photonicsbased
communication has many advantages over electric wires for multiprocessor and multicore macro-chip
architectures including high bandwidth data transmission, high speed and low power consumption. Following the
INTEL's concept to "siliconize" photonics, silicon device technologies should be able to solve the fabrication problems
for six main building blocks for realization of optical interconnects: light generation, guiding of light including
wavelength selectivity, light modulation for signal encoding, detection, low cost assembly including optical connecting
of the devices to the real world and finally the electronic control systems.
We propose a new type of grating-assisted microring (GAMR) structure with Bragg gratings placed on microring's arms.
Two Fabry-Perot resonances interact with microring resonance, resulting in GAMR's unique amplitude and phase spectra.
The structure's characteristics are analytically studied using coupled mode theory and numerically verified by 2D-FDTD.
With proper cavity lengths, GAMR exhibits an electromagnetically induced transparency (EIT)-like spectrum. The
ultra-narrow resonance can be used for sensing, modulation, and other applications.