Graphene-Coated Microring Resonator (MRR)-based Gas Sensor using Novel Intensity-Level Detection for low-cost, rapid, and label-free Sensing: Preliminary Simulated Results

Kent C. Soria, Ateneo de Manila University
Benjamin B. Dingel, Ateneo de Manila University
Jezlor Villarde, Ateneo de Manila University
Ramon C. Lapina, Ateneo de Manila University
Cindy Lisa Esporlas, Ateneo de Manila University
Luther Villacruz, Ateneo de Manila University
Kryss Urbano, Ateneo de Manila University
Francesca Palabrica, Ateneo de Manila University
Clint Dominic Bennett, Ateneo de Manila University

Abstract

Almost all current microring resonator (MRR) based sensors rely on a wavelength shift detection scheme. This involves (i) expensive tunable lasers as an input source and (ii) optical spectrum analyzers as a detector, which leads to overall bulky configuration, high cost, and complex arrangement. Here, we propose a low-cost, tapered waveguide MRR-based gas sensor that uses a simple intensity-level detection method. It employs (1) a low-cost laser source and (2) a photodetector. The MRR is coated with graphene to detect the specific target element. This design can significantly reduce the overall cost and complexity of the sensing system.