Design Rule of Mach-Zehnder Interferometer Sensors for Ultra-High Sensitivity
| Autor: | Daoxin Dai, Yiwei Xie, Ming Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Nanowire
Silicon on insulator Optical spectrum analyzer 02 engineering and technology lcsh:Chemical technology Mach–Zehnder interferometer 01 natural sciences Biochemistry Article Analytical Chemistry 010309 optics Arm lengths Optics Optical sensing 0103 physical sciences lcsh:TP1-1185 Electrical and Electronic Engineering Instrumentation Mach-Zehnder interferometer sensor Physics business.industry polarization-selective devices 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Interferometry integrated optics 0210 nano-technology business Sensitivity (electronics) |
| Zdroj: | Sensors (Basel, Switzerland) Sensors, Vol 20, Iss 2640, p 2640 (2020) Sensors Volume 20 Issue 9 |
| ISSN: | 1424-8220 |
| Popis: | A design rule for a Mach-Zehnder interferometer (MZI) sensor is presented, allowing tunable sensitivity by appropriately choosing the MZI arm lengths according to the formula given in this paper. The present MZI sensor designed by this method can achieve an ultra-high sensitivity, which is much higher than any other traditional MZI sensors. An example is given with silicon-on-insulator (SOI) nanowires and the device sensitivity is as high as 106 nm/refractive-index -unit (or even higher), by choosing the MZI arms appropriately. This makes it possible for one to realize a low-cost optical sensing system with a detection limit as high as 10&minus 6 refractive-index-unit, even when a cheap optical spectrum analyzer with low-resolution (e.g., 1 nm) is used for the wavelength-shift measurement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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