New research discusses the design of photonic crystal sensors using micro-ring resonators. The researchers propose a new algorithm to optimize the design of these sensors and find that it has a higher quality factor and sensitivity. This means that the sensor can detect smaller changes in the refractive index of the material it is measuring. They believe that their design could be used in optical integrated circuits. Photonic crystal sensors use micro-ring resonators to trap light. The light travels around the ring in a specific mode, and the resonant frequency of this mode depends on the refractive index of the material inside the ring. By measuring the resonant frequency, the sensor can determine the refractive index of the material.
The researchers propose a new algorithm to optimize the design of photonic crystal sensors. This algorithm considers the different factors that affect the resonant frequency, such as the size and shape of the ring, the refractive index of the material, and the presence of other materials in the vicinity. By optimizing these factors, the authors can design sensors with a higher quality factor and sensitivity.
They compare their design to other photonic crystal sensors that have been reported in the literature. They find their design has a higher quality factor and sensitivity than most other designs. This means that their sensor can detect smaller changes in the refractive index of the measuring material.
The researchers believe their design could be used in various applications, such as chemical sensing, biosensing, and environmental monitoring. Photonic crystal sensors are already being used in some commercial applications, and the researchers believe that their design could help to make these sensors more sensitive and versatile.
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