Gallium arsenide optical fiber temperature sensor Small probe size 0.5mm temperature measurement accuracy ±0.1℃
Brand Name:ZMSH
Certification:rohs
Model Number:Gallium arsenide optical fiber temperature sensor
Minimum Order Quantity:2
Payment Terms:T/T
Place of Origin:CHINA
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Shanghai Shanghai China
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Room.1-1805,No.1079 Dianshanhu Road,Qingpu Area Shanghai city, China /201799
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Abstract
Gallium arsenide optical fiber temperature sensor Small probe size 0.5mm temperature measurement accuracy ±0.1℃
Gallium arsenide (GaAs) optical fiber temperature sensor is a kind of non-contact temperature measurement system based on semiconductor optical characteristics, which realizes high precision temperature measurement through the principle that the light absorption or fluorescence characteristics of GaAs materials change with temperature. Its core advantages in all-optical signal transmission (no electromagnetic interference), small probe size (as small as 0.5mm), resistance to extreme environments (high voltage, strong corrosion, strong electromagnetic field, etc.), widely used in semiconductor, electric power, medical and scientific research fields.
Working principle
(1) Absorption side temperature measurement type
Principle: The wavelength of the light absorption side of GaAs
shifts towards the long wave direction (~0.4nm/℃) with the increase
of temperature.
Implementation method:
Broadband light sources (such as leds) transmit optical signals to the GaAs probe through optical fibers.
GaAs chips absorb specific wavelengths of light (absorption side wavelength is temperature-dependent).
The reflected light signal is returned to the demodulator and the temperature is calculated by spectral analysis.
Features: Simple structure, low cost, suitable for industrial applications (such as power equipment monitoring).
(2) Fluorescent lifetime temperature measurement type
Principle: The lifetime of GaAs stimulated emission fluorescence is
inversely proportional to temperature.
Implementation method:
The pulsed laser excites the GaAs probe to produce fluorescence.
The fluorescence decay time (lifetime) is detected, and the temperature is converted by calibration curve.
Features: Higher accuracy (±0.05℃), suitable for medical and scientific research fields.
Technical specifications
| Temperature measurement range: | -20℃~200℃ |
| Fiber optic Connector Type: | ST (custom accepted) |
| Minimum bending radius: | 30mm |
| Length requirements: | The cable length below 1000 m does not affect the temperature measurement performance |
| Optical cable withstand temperature: | -100℃~250℃ |
| Sheath material: | PEEK |
| Electromagnetic interference: | Complete immunity |
| Cable tension: | 50N/15s |
| Tension between sensor body and outgoing cable: | 20N/15s |
| Fiber cable tensile strength: | 100Mpa |
| Cable bending strength: | 165Mpa |
| Optical cable compression strength: | 125Mpa |
| Sheath hardness: | D85 (Shaw) |
| Optical cable dielectric strength: | 23kV/mm |
Peculiarity
High precision: temperature measurement accuracy up to ±0.1℃
(0~100℃ range), resolution 0.01℃.
Fast response: Response time <100ms, suitable for dynamic temperature monitoring.
Anti-interference: Full fiber signal transmission, complete immunity to electromagnetic interference (EMI/RFI).
Resistant to harsh environments:
Operating temperature range: -50℃~300℃ (special package can reach 500℃).
High pressure (>10kV) and radiation resistance (suitable for the nuclear industry).
Miniaturized probe: The minimum diameter of the probe is 0.5mm, which can be embedded in small Spaces or biological tissues.
Long distance transmission: Fiber length does not affect accuracy (1 meter to kilometer performance is consistent).
Application
(1) Semiconductor manufacturing
Wafer processing: Real-time monitoring of temperature uniformity
(e.g., SiC epitaxial growth) in etching and deposition processes.
Equipment thermal management: Temperature monitoring of key components such as lithography machines and ion implanters.
(2) Power system
High voltage equipment: transformer winding, circuit breaker
contact temperature monitoring (resistance to more than 10kV high
voltage).
New energy: hot spot detection of lithium battery pack and photovoltaic inverter.
(3) Medical and biological
Minimally invasive surgery: radiofrequency ablation tip temperature
real-time feedback (probe can be integrated into catheter).
Biological experiments: cell culture, temperature calibration of PCR instrument.
(4) Scientific research and extreme environment
Aerospace: Measurement of combustion chamber temperature of rocket
engines (resistance to high temperature and vibration).
Nuclear industry: Reactor cooling piping monitoring (radiation-resistant design).
(5) Industrial process control
Chemical piping: Temperature monitoring in corrosive media (acid
and alkali resistant package).
Iron and steel metallurgy: continuous casting billet surface temperature measurement (fast response, thermal shock resistance).
Q&A
1. Q: What is a gallium arsenide (GaAs) fiber optic temperature
sensor?
A: It's a high-precision, EMI-immune temperature sensor that uses
GaAs crystal's optical properties to measure temperature through
fiber optics, ideal for harsh environments.
2. Q: How does a GaAs fiber optic temperature sensor work?
A: It detects temperature by measuring either the wavelength shift
of GaAs's absorption edge or the decay time of its fluorescence,
transmitted via optical fiber.
Tag: #Gallium arsenide optical fiber temperature sensor, #Gallium
arsenide, #GaAs, #Small probe size 0.5mm, #Temperature measurement
accuracy ±0.1℃
Gallium arsenide optical fiber temperature sensor Small probe size 0.5mm temperature measurement accuracy ±0.1℃
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