A fiber grating is a diffraction grating formed by axially modulating the refractive index of a fiber core by a certain method, and is a passive filter device. Because the grating fiber has the advantages of small size, small welding loss, full compatibility with fiber, and ability to embed smart materials, and its resonant wavelength is sensitive to changes in temperature, strain, refractive index, concentration and other external environments, it is in fiber-optic communication. Fiber optic sensing and fiber optic signal processing and other fields have been widely used.

At present, a variety of fiber grating products such as uniform fiber grating, apodized fiber grating, chirped fiber grating, and phase-shifted fiber grating can be produced. Products are mainly used in fiber grating sensors, fiber grating filters, pump lasers, fiber lasers.

The above grating types can be combined with each other, namely: chirped phase shift grating, chirped phase shift polarization maintaining grating, and the like. Customized according to customer needs.

Fiber Bragg Grating Temperature Measurement System Features

All-fiber type, no power on site

Free from electromagnetic interference and nuclear radiation

Fiber optic sensors never fail, meeting the demanding requirements of power equipment for safety and reliability

The measurement accuracy and resolution are high, the temperature measurement accuracy is ±0.3°C, and the temperature measurement rate is determined to be 0.01°C.

Fast response, complete simultaneous measurement of all temperature measurement points in 0.16 seconds, with fixed temperature and differential temperature alarm capability

The system has large capacity expansion capability: subsequent expansion does not need to replace the host, only need to increase the fiber temperature sensor to achieve 64-side switchgear or 768~1152 temperature monitoring points (can be switch cabinet contacts and cable connectors, busbar connector fiber temperature) Centralized online monitoring of sensor hybrid access networking)

It can be used for a long time in harsh environments such as high temperature, high humidity and chemical attack.

Absolute measurement, no zero drift, light source attenuation and line loss do not affect measurement accuracy, no on-site calibration

Does not reduce the safety level of the switchgear, sensor and transmission fiber insulation, high voltage resistance, anti-climbing, flame retardant

Remote transmission, optical fiber transmission distance of up to 40 kilometers, easy to network

Fast installation and easy maintenance