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Fiber Bragg Grating Sensing System

Compared with traditional sensing technology, fiber grating sensing technology has its own distinctive features and advantages. Fiber grating has the characteristics of intrinsic passive, small volume, corrosion resistance, anti-electromagnetic, easy network, natural fusion with optical fiber network, and the information transmitted is wavelength-encoded, which is not easily affected by fluctuations of the light source and fiber line loss. At present, as an emerging sensing technology, fiber Bragg grating sensing has been widely used in electric power, petrochemical, transportation, bridge and other industries.

Yisan Optoelectronics has advanced technology and rich experience in sensor R&D, manufacturing, engineering implementation, etc. We can provide high quality products and professional services to our customers. Below are some application scenarios for our products.

 Applied in different industries: 


Power Industry:

According to the anti-electromagnetic interference and high voltage resistance of the fiber Bragg grating sensor, we adopt a special packaging process to make the product work normally at 10KV. Its main application is in power switch cabinets, high voltage cable joints, reactors and other power equipment.



In the petrochemical industry, fire and explosion protection is an important safety work. Fiber gratings are inherently passive, inherently explosion-proof and can withstand the harsh environmental conditions of petroleum and petrochemicals. At the same time, fiber grating array technology can realize real-time monitoring of large-scale remote distances in the plant. Fiber Bragg Grating sensing technology is an ideal choice for petrochemical safety monitoring.


Structural condition monitoring:

Fiber grating sensors are commonly used in large civil structures such as bridges, dams, slopes, etc. Mainly because these places are generally troublesome to supply power, and power problems can lead to increased costs. In addition, due to the harsh outdoor environment and difficult sensor construction, many users hope to invest once and stabilize for a long time. The FBG sensor is passive, corrosion-resistant and easy to lay, just to meet user expectations.


Demodulation device:

        The fiber grating demodulation device is generally in the remote control room or the equipment room. After receiving the signal reflected from the field sensor, the demodulation device demodulates the wavelength and compares it with the initial calibration wavelength after demodulation to determine the amount of wavelength change.The demodulation device processes the wavelength change amount into a corresponding physical quantity change amount according to the sensor type and algorithm processing and displays it on the interface.