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Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

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Pixelated Filter Array for On-Chip Polarized Spectral Detection.

Yuechen Liu^1,2, Chao Feng^1,2, Siyu Dong^1,2,3

¹MOE Key Laboratory of Advanced Micro-Structured Materials, Shanghai 200092, China.

Nanomaterials (Basel, Switzerland)

|October 14, 2023

Summary

This summary is machine-generated.

This study introduces novel on-chip polarization spectral detection filter arrays using metasurfaces and multilayer films. These arrays offer high spectral resolution and optical efficiency for advanced imaging applications.

Keywords:

filter array metasurface on-chip detection polarized spectral detection

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Area of Science:

Optoelectronics
Nanophotonics
Optical Engineering

Background:

On-chip multi-dimensional detection systems are crucial for medical imaging and remote sensing.
Existing filter arrays face trade-offs between detection dimensions, optical efficiency, and spectral resolution.

Purpose of the Study:

To develop novel on-chip integrated polarization spectral detection filter arrays.
To overcome limitations of current filter array technologies for enhanced optical detection.

Main Methods:

Integration of metasurfaces with nanopillars for polarization modulation and multilayer films.
Utilizing metasurface diffraction angles and Fabry-Perot cavities for spectral control.
Designing nine-channel polarization spectral filter arrays for TE linear polarization (1350-1550 nm).

Main Results:

Achieved a 10 nm balanced spectral resolution.
Demonstrated average peak transmission efficiency exceeding 75% using lossless dielectric materials.
Proposed a CMOS-compatible fabrication process using overlay e-beam lithography.

Conclusions:

The developed polarization spectral filter arrays offer high spectral resolution and optical efficiency.
The technology enables broader applications in in situ on-chip polarization spectral detection and in vivo imaging.
This advancement addresses key challenges in optical detection instrument design.