Refractive Index Sensing Using a Three-Port Interferometer and Comparison with Ring Resonators
| Jazyk: | angličtina |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
OPT - Optics
TS - Technical Sciences Industrial Innovation Interferometers Optical resonators Integrated photonics Limits of detection Refractive index units Refractive index Refractive index sensing High bandwidth High Tech Systems & Materials Ring resonator Biosensors Photonics Three-port Mach-Zehnder interferometer Nano Technology Resonators Mach-Zehnder interferometers Silicon on insulator technology Electronics NaCl solution |
| Popis: | In this paper, we compare ring resonator and three-port Mach-Zehnder Interferometer (MZI) devices fabricated on silicon-on-insulator for the purpose of refractive index sensing. Their respective sensitivities and limits of detection (LOD) were determined with NaCl solutions. A sensitivity of 113.07 nm per refractive index unit (RIU) and LOD of 2.47e-6 RIU was reached for the ring resonators. The most sensitive three-port MZI has a sensitivity of 13051 rad/RIU, and an LOD of 2.76e-8 RIU is shown to be attainable. A three-port MZI combines several advantages of both ring resonators and normal MZI devices, including a constant and scalable sensitivity, high-bandwidth readout, no directional ambiguity, and a simple interrogation setup. Such a device is promising for applications such as pressure, gas, and biosensing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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