Angularly stable terahertz multiband LiNbO-polymer hybrid metamaterial for microfluidic refractive index sensing.

A terahertz (THz) -polymer hybrid metamaterial (LPHM) consisting of three-layer Au patterns and two medium interval layers is demonstrated, and the bulk refractive index (RI) sensing performance is also studied. The parameter optimizations and sensing performances of the LPHM are simulated by the finite-element method (FEM). The results show that the reflection or absorption spectrum of the LPHM has four peaks in the 1-10 THz band, and the peaks move toward the lower frequency when the period () of the LPHM or the side length () of the notched square frame increases but shift to the higher frequency when or increases.

Integratable electro-optic modulator based on a polymer-embedded silicon racetrack resonator with high electro-optic wavelength tuning.

Electro-optic (EO) modulators based on polymer-embedded silicon racetrack resonators (EOM-PSRR) are investigated. To obtain the single-mode propagation condition, the mode and transmission characteristics of the polymer-embedded silicon waveguide are simulated by the finite element method (FEM). By adding a static bias voltage, the EO modulation performances of EOM-PSRR embedded with lithium niobate (), EO polymer (AJ309), and hybrid EO / material (HEOT) are studied.