Fegadolli, WS;Pavarelli, N;O'Brien, P;Njoroge, S;Almeida, VR;Scherer, A

2015

April

Acs Photonics

Thermally Controllable Silicon Photonic Crystal Nanobeam Cavity without Surface Cladding for Sensing Applications

Validated

()

WAVE-GUIDE RESONATOR LASER BIOSENSOR SENSORS

2

470

474

Photonic crystal nanobearn cavities with high-quality factors are very sensitive to the dielectric properties of their surroundings. Combining this high sensitivity with a specially designed heater, we experimentally demonstrate a very sensitive optical sensor, capable of simultaneously providing heat and interrogating the refractive index of its surroundings. The structure presents experimental sensitivity of 98 nm/RIU and signal-to-noise ratio of 3.88 x 10(-4) RIU and provides approximately 100 degrees C of temperature variation in the sensing area, with a temperature switching time of a few microseconds.

WASHINGTON

2330-4022

10.1021/ph5004863