Diamond Sensor Unit With Patch Antenna and Optical Waveguide
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Solution Overview
Problem
Existing sensors using NV centers in diamonds face damage and signal intensity limitations in high-voltage environments due to electrical discharge and electromagnetic interference, limiting their accuracy and reliability.
Innovation Solution
A diamond sensor unit design that includes a diamond with a color center, excitation light and electromagnetic wave irradiation, a patch antenna for receiving electromagnetic waves, and an optical waveguide for transmitting light, allowing remote and accurate magnetic field detection without damage in high-voltage environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diamond sensor is placed in a high-voltage environment for direct measurement, then measurement capability is improved, but the sensor is damaged by electrical discharge and electromagnetic interference
Solution Approach 1:
The system is divided into two separate parts: a high-voltage tolerant diamond sensor unit that remains in the high-voltage environment, and a control unit that operates at low voltage. These parts are connected via optical communication through optical fibers, allowing data transmission without electrical connection. This segmentation isolates the sensor from harmful electrical interference while maintaining measurement capability.
Solution Approach 2:
Optical fibers serve as an intermediary medium to transmit data between the diamond sensor and the control unit. Instead of direct electrical connection, optical communication mediates the information transfer, eliminating electrical interference pathways while maintaining functional connectivity between sensor and processor.
2Object-affected harmful factors
If optical fibers are used to transmit data from the sensor, then electrical interference is reduced, but signal loss occurs over long distances
Solution Approach 1:
The system incorporates real-time monitoring of optical signal quality and automatic adjustment of transmission parameters. When signal degradation is detected over long distances, the system adjusts modulation depth, transmission power, or routing to compensate for losses, maintaining reliable data communication despite optical attenuation.
3Device complexity
If a simple lens structure is used for light collection, then device complexity is reduced, but optical performance and signal collection efficiency deteriorate
Solution Approach 1:
Multiple optical functions are merged into a single integrated optical element. The optical system combines light collection, wavelength filtering, and signal focusing into one compact unit that maintains high signal collection efficiency while minimizing the number of separate components, thus reducing overall 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 design enables stable and precise measurement of magnetic fields and related physical quantities in high-voltage settings by using optical waveguides and patch antennas to separate and transmit light and electromagnetic waves effectively, reducing interference and damage.
Implementation Method 1
an LED 900 disposed on a substrate 912 emits green light for exciting the NV center of a diamond 904. The emitted light passes through an SPF (Short Pass Filter) 902, and subsequently enters diamond 904 disposed on a substrate 914. Accordingly, electrons at the NV center are brought into an excited state. When the excited electrons return to the original ground state, red fluorescent light is emitted from diamond 904.
Implementation Method 2
a first patch antenna that receives electromagnetic waves; an electromagnetic wave irradiation part that irradiates the diamond with the electromagnetic waves received by the first patch antenna
Implementation Method 3
an optical waveguide that transmits the excitation light and the radiated light
Data Source
AI summary
A diamond sensor unit includes: a diamond having a color center with electron spin; an excitation light irradiation part that irradiates the diamond with excitation light; a first patch antenna that receives electromagnetic waves; an electromagnetic wave irradiation part that irradiates the diamond with the electromagnetic waves received by the first patch antenna; a detection part that detects radiated light radiated from the color center of the diamond after the diamond is irradiated with the excitation light and the electromagnetic waves; and an optical waveguide that transmits the excitation light and the radiated light.