Study of Optical Resonant Microring Array Sensor

• Main Authors: Kuo-Chun Tseng, 曾國俊
• Other Authors: Shyh-Lin Tsao
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/07506604595142805921

碩士 === 國立臺灣師範大學 === 光電科技研究所 === 95 === In this thesis, we establish WDM light source and design the silicon-on-insulator (SOI) waveguide microring cavity structures and combine these two parts to achieve a bio-sensing system. An 1.5 μm SOA, 1×4 channel WDM MUX/DeMUX, 50:50 2×2 fiber couplers are used to achieve a WDM symmetric resonator laser. By combining the resonator laser and fiber gratings together, we can provide a well performance multi-level WDM light source. Besides, we design a microring structures for the sensor array. By injecting the different bio-fluid, the refractive index of coverd waveguide can be changed. The particular wavelength which can be droped through the micoring resonators. Based on the characteristics of index sensing, it shows the possibility for optical biosensor. The suitable parameters of the micoring resonator for different wavelength and the transmission status are discussed in the thesis. We estimated the output transitivity (out port) of the microring resonator by using the Finite Difference Time Domain (FDTD) method. The path loss and SNR were calculated by employing the FDTD method and the coupling efficiency between ring and bus waveguides were estimated by using the FDTD method. In this thesis , we also design the geometric structure of resonance cavity to see different resonances and find out suitable parameters for waveguide and analyze the sensitivity of detecting power.