Silicon-on-insulator sensors using integrated resonance-enhanced defect-mediated photodetectors
Publication Type:Journal Article
Source:Opt. Express, OSA, Volume 22, Number 23, p.28517--28529 (2014)
Keywords:Optical resonators; Biological sensing and sensors
A resonance-enhanced, defect-mediated, ring resonator photodetector has been implemented as a single unit biosensor on a silicon-on-insulator platform, providing a cost effective means of integrating ring resonator sensors with photodetectors for lab-on-chip applications. This method overcomes the challenge of integrating hybrid photodetectors on the chip. The demonstrated responsivity of the photodetector-sensor was 90 mA/W. Devices were characterized using refractive index modified solutions and showed sensitivities of 30 nm/RIU.