DBR Laser Sensor Layout for Wearable Blood Sugar Detection
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Solution Overview
Problem
Non-invasive blood sugar detection sensors face challenges in being mounted to mobile and/or wearable electronic devices due to the characteristics of a light source and a light reception element.
Innovation Solution
An electronic device equipped with a transmission circuit, including a laser gain circuit, a fixed array distributed Bragg reflector (DBR) grating, a modulator, and an output coupler, to output and adjust laser lights for blood sugar detection, combined with a reception circuit and photo detectors for accurate detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If non-invasive blood sugar detection sensors are used, then blood sugar level detection capability is improved, but device size and integration difficulty increase due to light source and light reception element characteristics
Solution Approach 1:
The patent combines multiple functional components (light source, DBR grating, modulator, light reception element, and signal processing circuit) into an integrated sensor system that can be mounted on mobile and wearable electronic devices. This merging approach maintains blood sugar detection capability while reducing overall device volume through functional integration.
Solution Approach 2:
The patent utilizes specific wavelength parameters (2100 nm to 2400 nm range) for laser light to achieve non-invasive blood sugar detection. By optimizing the wavelength parameters of the light source and matching them with the absorption characteristics of glucose, the system achieves accurate detection while maintaining compact device dimensions suitable for portable electronics.
2Measurement precision
If non-invasive blood sugar detection sensors are used, then blood sugar level detection capability is improved, but device complexity increases due to multiple optical components required
Solution Approach 1:
The patent divides the sensor system into distinct functional modules: a light source unit generating 2100-2400 nm laser light, a DBR grating unit for wavelength selection, a modulator unit for signal modulation, and a light reception unit with photodetectors. This segmentation allows each component to be optimized independently and facilitates easier integration into portable devices by treating them as modular units.
Solution Approach 2:
The sensor system is designed with multi-functional components that serve multiple purposes. For example, the DBR grating both selects specific wavelengths and acts as a wavelength reference, while the modulator both modulates the light signal and serves as a timing reference. This multi-functionality reduces the total number of components needed, thereby reducing device complexity.
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
The solution enables miniaturized blood sugar detection in portable devices, improving performance and ease of integration into wearable electronics.
Implementation Method 1
a laser gain circuit configured to output or generate a plurality of laser lights in a broadband
Implementation Method 2
a fixed array distributed bragg reflector (DBR) grating configured to change wavelengths of the plurality of laser lights
Implementation Method 3
the reception circuit may include at least one photo detector
Data Source
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AI summary
An electronic device is provided. The electronic device includes a transmission circuit, a reception circuit, memory storing one or more computer programs, and one or more processors communicatively coupled to the transmission circuit, the reception circuit, and the memory, wherein the transmission circuit includes a laser gain circuit configured to output or generate a plurality of laser lights in a broadband under control of the one or more processors, a fixed array distributed bragg reflector (DBR) grating configured to change wavelengths of the plurality of laser lights and output a plurality of laser lights having specified wavelengths, a modulator configured to modulate the plurality of laser lights having the specified wavelengths, a monitoring circuit configured to identify whether or not the plurality of modulated laser lights is output in a specified intensity and specified wavelength, and an output coupler configured to adjust output directions and/or angles of the plurality of modulated laser lights and output the plurality of modulated laser lights to an outside of the electronic device.