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Rigorous coupled-wave analysis of a multi-layered plasmonic integrated refractive index sensor
Optics Express
|November 23, 2021
Summary
We used rigorous coupled-wave analysis (RCWA) to design a multi-layer plasmonic sensor. This efficient method is ideal for optimizing complex nanophotonic devices, offering a low-cost solution for device engineering.
Area of Science:
- Nanophotonics
- Plasmonics
- Sensor Technology
Background:
- Plasmonic sensors offer high sensitivity for refractive index detection.
- Multi-layer nanophotonic devices require efficient simulation methods for optimization.
- Existing methods can be computationally expensive for complex, multi-parameter designs.
Purpose of the Study:
- To apply rigorous coupled-wave analysis (RCWA) for designing a multi-layer plasmonic refractive index sensor.
- To demonstrate RCWA as an efficient and low-cost method for nanophotonic device engineering.
Main Methods:
- Rigorous Coupled-Wave Analysis (RCWA) simulations were employed.
- The design involved metallic nanohole arrays integrated with a Germanium-on-Silicon (Ge-on-Si) photodetector.
Main Results:
- RCWA simulations proved effective for designing the multi-layer plasmonic sensor.
- The method's modularity and frequency-domain computation facilitated efficient simulation.
Conclusions:
- RCWA is a suitable and cost-effective tool for the simulation and optimization of multi-layer plasmonic nanostructures.
- This approach enables efficient device engineering for integrated photonic sensors.
