The Design And Analysis Of Optical Waveguide Polymer-based Micro Ring Temperature Sensors

The rapid growth in waveguide fabrication and fine process technology leads to a great progress of optical plate waveguide in sensing areas as well as in optic communications. The applications of plate waveguide sensor in biochemistry, medical science, life science and environmental monitoring make it to be hotspot in plate waveguide field.Based on the analysis of the waveguide optics theory, the micro-ring waveguide sensor is designed and studied. The appropriate micro-ring resonator radius, FSR, and the resonance series are selected through the analysis of micro-ring resonance. The series double-ring temperature sensor and parallel double-ring temperature sensor are designed and numerical simulated, which is based on the relationship between the temperature and the refractive index of polymer. With the output of the simulation spectrum, the conclusion is achieved that the resonance peaks appear distinct displacement as the temperature changes, and the higher thermo-optic coefficient of the polymer is, the more obvious resonance peaks shift. The temperature changes can also be calculated with the resonant peak shift, which provide us with the feasibility to improve the measurement accuracy of temperature in the further.By researching the waveguide polymer micro-ring temperature sensor, especially the structure design and characterization analysis, which provides theoretical basis and experimental references for the design of new type of sensors with high resolution and sensitivity.