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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
Published on: February 4, 2018
Single-layer one-dimensional nonpolarizing guided-mode resonance filters under normal incidence
Tapani Alasaarela1, Dandan Zheng, Lingling Huang
1Deparment of Micro- and Nanosciences, Aalto University, P.O. Box 13500, FI-00076 Aalto, Finland.
Optics Letters
|July 5, 2011
Summary
One-dimensional guided-mode resonance filters (GMRFs) with a single grating layer achieve nonpolarizing resonant filtering. This compact GMRF design is feasible for fabrication using advanced thin-film deposition techniques.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Guided-mode resonance filters (GMRFs) are optical devices with unique spectral characteristics.
- Achieving nonpolarizing filtering in GMRFs is crucial for various optical applications.
- Traditional GMRF designs often require complex structures and fabrication processes.
Purpose of the Study:
- To demonstrate a nonpolarizing resonant filtering effect using a simplified one-dimensional GMRF.
- To explore the feasibility of fabricating compact GMRFs with a single grating layer.
- To investigate the performance of GMRFs with sinusoidal profiles.
Main Methods:
- Design and simulation of one-dimensional GMRFs with a single grating layer.
- Fabrication using photoinduced surface-relief grating formation on polymer-azobenzene complexes.
- Thin-film deposition via atomic layer deposition (ALD).
Main Results:
- Successfully demonstrated a nonpolarizing resonant filtering effect under normal incidence.
- Achieved a sinusoidal profile nonpolarizing GMRF.
- Confirmed the feasibility of fabricating compact GMRFs with the described methods.
Conclusions:
- Properly designed one-dimensional GMRFs can achieve nonpolarizing resonant filtering with a single grating layer.
- The fabrication method using polymer-azobenzene complexes and ALD is viable for compact GMRFs.
- This work presents a simplified approach to creating efficient optical filters.
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