Fiber-Grating Tunnel Structural Safety Monitoring System

Center Wavelength: 1030.0, 1064.3 Tolerance on Center Wavelength: ±0.5 nm Peak Reflectivity [≥5 - 99%; can be customized]: ≥5 - 99 %

Standard acceleration sensor - Operating frequency: 0.5~900Hz Standard acceleration sensor - Natural frequency: max:≥1000Hz Standard acceleration sensor - Wavelength range: （1528~1568）nm

The Fiber S700 series is a fiber-optic accelerometer based on fiber Bragg grating (FBG) technology. Its optimized design enables acceleration and vibration detection in large structures, with a maximum detection frequency of 4kHz. Structural design can provide single-dimensional or multidimensional acceleration measurement.

S600-Wavelength Range: （1528~1568）nm S600-Measurement Range: ±8000με S600-Accuracy: ±2με

The Fiber S600 series microstrain sensor is based on fiber grating sensing technology. Its unique elastic-element design enables repeatable, stable strain measurement. The grating is fixed to stainless steel or a flexible substrate in a pretensioned state. Adhesive-free packaging ensures long-term sensor reliability. The product is primarily used for construction monitoring and long-term health monitoring in civil engineering and large facilities.

Conventional fiber Bragg grating temperature sensor - Wavelength range: （1528~1568）nm Conventional fiber Bragg grating temperature sensor - Measurement range: （-40~300）℃ Conventional fiber Bragg grating temperature sensor - Accuracy [With Instrument]: ±2.0℃ (with instrument)

Conventional fiber Bragg grating temperature sensors measure surface or internal temperatures of different structures and can be used for tunnel fire protection, switchgear and embedded temperature measurement. High-temperature fiber Bragg grating sensors use regenerated Bragg gratings (RBGs) as sensing elements and measure temperatures from room temperature to 800℃. Regenerated Bragg gratings are obtained by annealing conventional UV-written type Ⅰ fiber Bragg gratings. Their reflectance is stable, and reflected wavelength has a good linear relationship with measured temperature. High-sensitivity fiber Bragg grating temperature sensors measure surface or internal temperatures of different structures, including tunnel fire protection, switchgear and embedded measurement applications. Installation options include surface mounting and embedding. They are widely used for precise temperature measurement in large structures and buildings, such as bridges, dams, offshore oil platforms, and oil and gas pipelines, and in large facilities or equipment in the power, fire-protection and mining sectors. Sensors with corresponding sensitivities can be supplied according to the material's coefficient of thermal expansion.

Demodulation range: 40nm （1528nm~1568 nm） Number of optical channels: Maximum channel count 32 (optional 4, 8, 16) Maximum number of sensors per channel: 30pieces

The Fiber X500 series high-speed demodulator is a fiber grating interrogator that demodulates by spectral scanning. It uses a dynamically scanned narrowband semiconductor laser source for high-resolution fiber grating demodulation over a 40nm range. Designed specifically for static FBG measurements, it supports real-time online monitoring of temperature, stress, strain and displacement. PLC splitters provide low-cost channel expansion, while synchronous acquisition provides good real-time performance. With no moving parts, it offers high reliability and temperature stability.