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Types of FBG Packaged Sensor

FBG Temperature Sensor

FBG Temperature Sensor

The temperature sensor based on FBG technology adopts wavelength coding technology, which eliminates the influence of light source power fluctuation and system loss, and is suitable for long-term monitoring; and the temperature sensing system composed of multiple FBGs uses an optical cable to achieve quasi-distribution measurement.
FBG Strain Sensor

FBG Strain Sensor

This kind of sensor is the most widely used and the most mature fiber optic sensor in the engineering field. In harsh working environments, the fiber is very easy to damage, so it needs to be packaged before use. The commonly used packaging methods mainly include the substrate type, the tube type and the two-end clamping type based on the tube type. We also adopt the technology of temperature compensation to eliminate the temperature influence on the strain monitoring.
FBG Pressure Sensor

FBG Pressure Sensor

The PT-01 pressure sensor is designed to measure both fluid and gas pressure or level.
FBG Accelerometer

FBG Accelerometer

AL-01 transmits the acceleration change to the FBG after the FBG is properly packaged, and calculates the acceleration to be measured by measuring the wavelength change of the FBG combined with the fast FBG interrogation technology. Suitable for vibration monitoring of engines, generator pumps, bridges, roadbeds and other engineering structures.
FBG Tilt Sensor

FBG Tilt Sensor

TL-01 can realize single-axis or dual-axis inclination measurement, prevent lightning strike, which provides a great guarantee for engineering safety and reliability. Wildly used in measurement of subway and high-speed rail pipeline settlement, measurement of bridge level or inclination.
FBG Earth Load Cell

FBG Earth Load Cell

LC-01 is embedded in soil or earth-rock body, measuring soil stress and contact pressure between retaining walls, bridge piers, pipes, bored piles and tunnel linings and other structures and soil, commonly applied in slope soil pressure monitoring, road pressure monitoring, etc.
FBG Hydrostatic Level Sensor

FBG Hydrostatic Level Sensor

HS-01 is a special precision instrument for measuring the relative height change between various measuring points of foundations and buildings. It is mainly used for uneven subsidence measurement between various measuring points of large buildings such as bridges, hydropower plants, dams, high-rise buildings, nuclear power plants, water conservancy project rock masses, etc.
FBG Anchor (Bolt) Dynamometer

FBG Anchor (Bolt) Dynamometer

The FBG Anchor (Bolt) Dynamometer is mainly used to measure and monitor various bolts, cables, rock bolts, pillars, supports in tunnels and underground caverns, and the loss of load and prestress in large prestressed reinforced concrete structures (bridges, dams, etc.)
FBG Humidity Sensor HST-01

FBG Humidity Sensor HST-01

FBG Humidity Sensor HST-01 is packaged in a stainless steel metal tube, and uses the humidity sensitivity characteristic of FBG to monitor humidity.

What Are The Fbg Packaged Sensor's Advantages?

The FBG packaged sensor based on fiber Bragg grating technology has some special advantages. The most important thing is that the sensing signal is wavelength modulated and has strong multiplexing ability. The advantage is that the measurement signal is not affected by fiber bending loss, link loss, light source fluctuation and the influence of factors such as the aging of the detector, hence avoid the problem of ambiguity in the phase measurement of the interferometric fiber optic sensor, multiple fiber Bragg gratings are connected in series on a single fiber, the sensors are embedded (or mounted) to the structure, several parameters can be monitored obtained at the same time out of each measurement target, hence realized a quasi-distributed sensing system.

It can be said that the fiber grating sensor is the most ideal sensitive components right now. Some types of FBG packaged sensors have been commercialized and are widely used in geodynamics, spacecraft and ship, civil engineering structures, power industry, medical and chemical sensing, and telecommunication engineering.


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