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Electron Mobility Sensor Scheme-Based on a Mach–Zehnder Interferometer Approach
- Source :
- IEEE Photonics Technology Letters
- Publication Year :
- 2018
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2018.
-
Abstract
- This letter presents the use of a plasmonic sensing transducer on an embedded Mach–Zehnder interferometer (MZI) arm, allowing the sensing transducer to be formed through the stacked layers of the silicon–graphene–gold materials and embedded on an MZI arm with a gripping force to allow it to be used in sensing applications. The transduction process introduces an energy conversion between the input light and the excited electron mobility within the silicon and graphene layers. That way the electron drift velocity within the gold layer can drive the plasmonic wave group velocity induced through the interaction with the graphene layers, and consequently, the electron mobility in the gold layer increases. The driven electron mobility in the gold layer, caused by the plasmonic waves from graphene in the embedded sensing layers, will affect the electron output mobility, where the relative change in the phase of the light in the silicon can be seen at the output port of the MZI. To optimize the key parameters of such a system (especially input optical power and dimensions of the gold layer), simulations are performed at various input optical powers and the results are graphically represented. A maximum sensitivity of ~ $2\times {10}^{-14}$ mV−1s−1 in electron mobility sensing is obtained through these simulations, designed to optimize the performance characteristics of the proposed sensor.
- Subjects :
- Electron mobility
Materials science
Drift velocity
business.industry
Graphene
Physics::Optics
Optical power
02 engineering and technology
021001 nanoscience & nanotechnology
Mach–Zehnder interferometer
01 natural sciences
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
law.invention
Interferometry
Transducer
law
0103 physical sciences
Optoelectronics
Electrical and Electronic Engineering
010306 general physics
0210 nano-technology
business
Plasmon
Subjects
Details
- ISSN :
- 19410174 and 10411135
- Volume :
- 30
- Database :
- OpenAIRE
- Journal :
- IEEE Photonics Technology Letters
- Accession number :
- edsair.doi.dedup.....a74e6cf3e76e6651d215cf2b13b00b01