Spectrometer Super-Resolution via Tunable Optical Medium
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Solution Overview
Problem
Spectrometry systems face challenges in detecting certain chemicals like Boron, Arsenic, Perchlorate salts, and heavy metals at low concentrations due to spectral resolution limitations, especially in water quality monitoring where real-time and online detection is crucial.
Innovation Solution
A super resolution technique is applied to spectrometry systems, utilizing a tunable optical medium with a predetermined spectral transmission curve and a processing unit to enhance spectral resolution, allowing for the simultaneous detection and estimation of multiple chemicals by shifting the spectral transmission curve or excitation wavelength, thereby improving the accuracy and precision of concentration measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional spectrometry systems are used, then the system structure is simple, but the spectral resolution is insufficient to detect chemicals at low concentrations
Solution Approach 1:
The patent employs a tunable optical medium (such as a tunable filter or acousto-optic modulator) that dynamically adjusts its spectral transmission characteristics. By tuning the optical medium across different wavelengths, the system achieves variable spectral resolution without requiring multiple fixed spectrometers, thus improving measurement precision while controlling device complexity.
Solution Approach 2:
The patent transforms the spectral measurement from a single-dimension problem to a two-dimensional problem by introducing the time dimension through sequential wavelength tuning. Multiple spectra acquired at different wavelengths are processed together to achieve super-resolution, effectively adding a temporal dimension to enhance spectral resolution without proportionally increasing hardware complexity.
2Adaptability or versatility
If conventional spectrometry systems are used, then the device complexity is low, but the ability to detect multiple chemicals simultaneously is limited
Solution Approach 1:
The patent creates a universal detection system where a single spectrometry apparatus with a tunable optical medium can detect multiple chemicals simultaneously. By sweeping through a range of wavelengths and processing the collected spectral data, the system identifies multiple chemical signatures without requiring separate detection devices for each chemical, thus achieving multi-functionality.
Solution Approach 2:
The patent performs preliminary spectral scanning across a broad wavelength range before identifying specific chemical signatures. This preliminary action collects comprehensive spectral information that enables subsequent identification of multiple chemicals, allowing the system to be versatile without requiring complex real-time switching between different detection modes.
3Measurement precision
If conventional spectrometry systems are used, then the system is simple to operate, but real-time monitoring with high precision is not achieved
Solution Approach 1:
The patent employs periodic tuning of the optical medium through a sequence of wavelengths in a systematic manner. This periodic action allows the system to efficiently collect spectral information at multiple wavelengths in a structured fashion, enabling real-time processing and rapid identification of chemicals with high precision without excessive measurement time.
Solution Approach 2:
The patent maintains continuous spectral data acquisition by seamlessly tuning the optical medium through the wavelength range without interruption. This continuous action ensures that spectral information is collected continuously, enabling real-time monitoring applications while maintaining high measurement precision through accumulated spectral data.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly enhances the ability to detect and quantify chemicals like Nitride, Ammonium, Phosphate, Chloride, Boron, and heavy metals with improved accuracy and precision, enabling real-time, online monitoring of water quality by achieving an order of magnitude improvement in spectral resolution and minimal detectable concentration levels.
Implementation Method 1
an optical medium configured so that the radiation incoming from the sample be transferred through the optical medium, the optical medium having a predetermined tunable spectral transmission curve
Implementation Method 2
an operating unit connectable to the optical medium and configured to operate the optical medium so as to shift the spectral transmission curve of the optical medium over a predetermined spectral range
Implementation Method 3
The Raman effect (also referred to as Raman scattering) is an optical non linear effect that is used in spectroscopy as a tool for mapping and detecting materials. The technique is based on illuminating the sample with a monochromatic incident radiation and on measuring a wavelength shift between the incident radiation and the reflected or transmitted radiation
Implementation Method 4
a processing unit connectable to the spectrometer and configured to process a set of shifted frequency spectra provided by the spectrometer and obtainable by transferring the radiation incoming from the sample through the optical medium while shifting the spectral transmission curve of the optical medium so as to obtain a super resolved frequency spectrum of improved spectral resolution
Data Source
AI summary
The present disclosure provides systems and methods for improving the resolution of a spectrometer configured to provide a frequency spectrum of a radiation incoming from a sample. The system comprises an optical medium configured so that the radiation incoming from the sample be transferred through the optical medium, the optical medium having a predetermined tunable spectral transmission curve; an operating unit connectable to the optical medium and configured to operate the optical medium so as to shift the spectral transmission curve of the optical medium over a predetermined spectral range; and a processing unit connectable to the spectrometer and configured to process a set of shifted frequency spectra provided by the spectrometer and obtainable by transferring the radiation incoming from the sample through the optical medium while shifting the spectral transmission curve of the optical medium so as to obtain a super resolved frequency spectrum of improved spectral resolution.