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Area of Science:

Optics and Photonics
Spectroscopy
Nanotechnology

Background:

Traditional spectrometers can be bulky and expensive.
Miniaturization of spectral analysis tools is crucial for portable applications.

Purpose of the Study:

To develop a compact and high-resolution spectrometer system.
To leverage guided-mode resonance filters for spectral sensing.

Main Methods:

Utilized a gradient grating period guided-mode resonance filter.
Integrated the filter with a linear photodetector array.
Employed a precalibrated transmission efficiency matrix for wavelength determination.

Main Results:

Achieved a device length of 2.23 mm.
Demonstrated a measurable spectral range of 506-700 nm.
Obtained a spectral resolution of 1 nm.

Conclusions:

The compact spectrometer system offers efficient spectral analysis.
The device shows potential for miniaturized spectral sensing applications.
Spatially dependent resonance characteristics enable accurate wavelength measurement.