Silicon-On-Insulator Biosensor using Micro-ring Resonators and Ring-assisted Mach-Zehnder Interferometers
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The silicon photonic platform is widely used for optical sensing and communications because its high index contrast allows for smaller devices, and is compatible with CMOS manufacturing techniques. In this thesis we examine theoretically and demonstrate experimentally silicon-on-insulator biochemical sensors based on micro-ring resonators (MRR) and ring assisted Mach-Zehnder interferometers (RAMZI). We determine that the sensitivity of the slot waveguide is enhanced compared to the wire waveguide and examine the effect of coupler design on sensing performance using directional couplers and multi mode interference (MMI) couplers. We find that RAMZI devices offer a similar sensitivity while offering a larger index of refraction measurement range than MRR designs. The slot waveguide is found to increase bulk index sensing sensitivity by up to 2.2 times that of the wire waveguide. Directional coupler based MRR and RAMZI devices are shown to have higher bulk index sensitivities than MMI coupled devices.
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Copyright © 2016 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 2016
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marsh-silicononinsulatorbiosensorusingmicroring.pdf | 2023-05-05 | Public | Download |