Design considerations of highly efficient D-shaped plasmonic biosensor

Design considerations of photonic crystal fiber (PCF) surface plasmon biosensor with high sensitivity to monitor glucose concentration is reported and studied. Based on a well-known large mode area (LMA) single mode PCF, two different configurations have been studied to investigate the impact of the etching process on the biosensor sensitivity. Furthermore, the possibility of infiltrating one hole by a plasmonic material to increases the biosensor sensitivity is studied. A full vectorial finite element method (FVFEM) is used to carry out the analysis of the reported biosensor. In addition, the geometrical parameters of the suggested biosensors have been optimized to obtain the highest sensitivity. The suggested biosensor based on a D-shaped PCF with plasmonic rod achieves sensitivity as high as 13,600 nm/RIU with corresponding resolution of 7.35×10-6RIU.The analysis also reveals that the proposed biosensor has a linear performance which is needed practically. Therefore, the reported biosensor has advantages in terms of fabrication feasibility and high linear sensitivity

CMOS compatible silicon slot ring resonator sensor

We propose a fully CMOS compatible optical sensor based on the ring resonator mechanism. The waveguide structure of the sensor utilizes the silicon on insulator slot waveguide configuration. The analyte fills the slot and the cladding of the ring resonator. Since the optical power is enhanced and confined within the slot, then the overlap between the analyte and the optical power is maximized. The sensitivity of the sensor was measured to be 350 nm/RIU at the optical wavelength of 1.55 m.Scopu

Vertical Silicon Nanowires Based Directional Coupler Optical Router

A fully complementary metal-oxide-semiconductor compatible optical router is demonstrated. The router structure is built using the silicon-organic hybrid platform, while its mechanism is based on the directional coupler operation. The directional coupler waveguides are formed by the arrays of silicon nanowires, while the cladding and voids between the silicon nanowires are filled with an electro-optic polymer. Routing of the optical signal is demonstrated through the change of the coupling length of the directional coupler upon voltage application. The router is characterized by the short length directional coupler of 24 μm, and total footprint of 62 μm 2 , high extinction ratio which reaches 33 dB and low insertion losses of 1.3 dB

Vertical silicon nanowire-based racetrack resonator optical sensor

We propose a highly sensitive optical sensor which is built from silicon nanowires. The silicon nanowires are arranged to form a ring resonator. The silicon nanowires cladding and voids are filled with the analyte. The sensor has a small footprint of 16 μm × 16.5 μm. The insertion loss of the sensor is only 0.4 dB, while it is characterized by its high sensitivity of 430 nm/RIU. As a biosensor, our device showed a 100 nm/RIU sensitivity when a thin biolayer of 10 nm thickness is attached to the silicon nanowire structures

Smart techniques for modelling nanophotonic circuits

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Mid infrared applications of silicon thermoplasmonics

[no abstract provided

Smart Techniques for Modelling Nanophotonic Circuits (Invited)

Abstract-Efficient computational methods for modeling nanophotonic devices are presented. These methods include efficient sensitivity analysis based on full wave electromagnetic solvers. It also includes analytical modeling for plasmonic devices using impudence approach. These methods proved to be effective and easy to implement

Sub-Femtojoule Hybrid Plasmonic Optical Modulator

A highly compact optical modulator is proposed and analyzed. The modulator is based on the hybrid plasmonic waveguide platform. The structure of the modulator is built from silicon, silver, and electro-optical polymer layers. Hybrid plasmonic modes of symmetric and asymmetric natures excited in the structure were investigated. The symmetric mode is characterized by its lower propagation loss, so it was selected for the excitation of the device. The modulator\u27s operation mechanism is based on the racetrack resonator configuration. Full three-dimensional electromagnetic analysis was performed around the 1.55-μm telecommunication wavelength. Different parameters such as the power coupling to the bus waveguide, the bend loss, the propagation loss, and the Q-factor of the resonances were studied in order to optimize the racetrack resonator design. The modulator is characterized by its extremely low energy consumption of 0.5 fJ/bit, high modulation depth of 10.5 dB, while the insertion losses were limited to 0.5 dB