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Application analysis of FISO optical fiber connector


According to the principle that light is modulated in optical fiber, optical fiber sensors can be divided into intensity modulation type, phase modulation type, polarization modulation type, frequency modulation type, and wavelength modulation type. So far, more than 70 physical quantities can be measured by optical fiber sensors. Compared with traditional sensors, fiber optic sensors have unique advantages:

(1) High sensitivity. Since light is an electromagnetic wave with extremely short wavelengths, its optical length is obtained through the phase of light. Taking fiber interferometer as an example, due to the small diameter of the fiber used, its optical length will change when subjected to a small mechanical external force or temperature change, which will cause a large phase change. Assuming that 10 meters of fiber are used, a change of 1 ° C causes a phase change of 1000ard. If the smallest phase change that can be detected is 0.01ard, then the smallest temperature change that can be measured is l0 ° C, which shows the high sensitivity.

(2) Anti-electromagnetic interference, electrical insulation, corrosion resistance, and intrinsic safety. Because the optical fiber sensor uses light waves to transmit information, and the optical fiber is an electrically insulated, corrosion-resistant transmission medium, and it is safe and reliable, which makes it convenient and effective for various large-scale electromechanical, petrochemical, mine and other strong electromagnetic interference and easy Inflammable and explosive environment.

(3) The measurement speed is fast. The propagation speed of light is the fastest and can transmit two-dimensional information, so it can be used for high-speed measurement. The analysis of radar and other signals requires a very high detection rate, which is difficult to achieve with electronic methods. High-speed spectrum analysis using the phenomenon of light diffraction can be solved.

(4) Large information capacity. The signal under test uses light waves as the carrier, and the frequency of light is extremely high, and the frequency band accommodated is very wide. The same fiber can transmit multiple signals.

(5) Suitable for harsh environments. Optical fiber is a dielectric, resistant to high pressure, corrosion, and electromagnetic interference, and can be used in harsh environments where other sensors are not suitable. In addition, the optical fiber sensor has the characteristics of lightweight, small size, flexible, wide measurement object, good reusability, low cost, and so on. As a well-known domestic sensor sales platform, Gongcai is committed to bringing various types of foreign high-quality sensors back to China. Regarding fiber optic sensors, we have reached a cooperation agreement with FISO, a well-known foreign fiber optic sensor company. The following two main fiber optic sensors are recommended. :

Optical fiber temperature sensor-FOT-L-SD and optical fiber temperature sensor-FOT-L-BA is a type of optical fiber temperature sensor that is very suitable for measuring temperature in extreme environments, such as low temperature, nuclear environment, microwave, and high-intensity RF, etc. FOT-L combines all the excellent features you expect from an ideal sensor body. Therefore, even in extreme temperatures and adverse environments, such sensors can still provide high-precision and reliable temperature measurements.

The main characteristics of the two FOT-L optical fiber temperature sensors are completely unaffected by EMI and RFI. At the same time, they are small in size, built-in safety devices for hazardous environments, high-temperature resistance, corrosion resistance, and high accuracy. Based on fiber optic technology, the sensor is essentially not affected by EMI and RFI. The light sensor is not active electronically, so it will not emit or be affected by any type of EM radiation, whether this type of radiation is microwave, RF or It is NMR.