Numerical Study of Integrated Micro Ring Resonator and Micro Lens

Ring resonator;Micro lens;Methane sensor;Optical properties;Nano structure;Cascaded ring structure;Electrical engineering;Electrical Engineering, College of Engineering & Computer Science

Guo, XiaopengLo, Joe Fu-Jiou ;

University of Michigan

关键词: Ring resonator;    Micro lens;    Methane sensor;    Optical properties;    Nano structure;    Cascaded ring structure;    Electrical engineering;    Electrical Engineering, College of Engineering & Computer Science;   

Others  :  https://deepblue.lib.umich.edu/bitstream/handle/2027.42/143215/Thesis%20from%20Xiaopeng%20Guo%28final%20vision%29.pdf?sequence=1&isAllowed=y

瑞士|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

In this work, we have discovered that a new approach to detect methane. It built a ring resonator structure with methane sensitive-material cryptophane-A. With the concentration of methane changed, the refractive index of cryptophane-A also changed, thus the resonance wavelength shifted. And it also built new two ring resonator for gaining the wavelength shift. That meansthe ultra-small size of the micro ring resonator structure will detect the concentration of methane by precision spectrometer. What;;s more, we have discovered that it is possible to utilize tapered nano structure to increase the transmission of phase shifters built with high refractive index materials. A typical grating micro lens is demonstrated to examine the effectiveness of taper-enhancement effect - the focus efficiency is increased from 9% to 28% with properly designed tapered sidewall. Our work will provide a novel method to enhance performance using high refractive index materials in the emerging micro lens field.