What is Bragg Grating?
Bragg grille is a short piece of optical fiber designed to filter light wavelengths. Like speed impacts in the tunnel, small grids occupy the glass core of the fiber, located at intervals up to hundreds at a time. They are designed to gradually reflect certain parts of the light wave. The gaps distract parts of the wool when traveling, which allow fine tuned checks over the properties of wave transmission for many purposes. These devices separate the light waves to increase the transmission of waves that move simultaneously through fiber. Other Bragg grids work in optical fiber sensors that measure temperature and voltage. It is named after British physician Sir William Lawrence Bragg. BRAGG GRATING is created by using an ultraviolet (UV) laser to write the refractive indexes along the fiber core.
Two methods of achieving periodic or aperiodic variations of refractive include interference and camouflage. Basically, the fiber photo is changed by exposure, disturbing or masking UV light. These processes canOU to be automated for mass production of fiber with refractive grid periods.
Other applications of Bragg's grid in optical fibers are in the use of sensor technology. One type of optical fiber sensor detects the properties of materials passing through the gap in the optical path. Sensors can also use a fiber to make information from other types of sensors. Such properties include light intensity, phase and polarization. The fiber with Bragg grid harmlessly reflects some frequencies of a wide spectrum of light and cleans the path only for the analyzed desired wavelengths.
In the sensor technology, the principles of Bragg grid are also used in other ways. Sensors equipped with Bragg fiber grid can measure temperature and tension. Temperature changes can change the refractive index of the fiber that changes the reflecting wavelengths. The degree of change corresponds to the temperature values and excludes other conditions such as tension or compression.
The trunk may be caused by similar factors that cause temperature changes; To measure voltage, it requires the use of a voltage and temperature sensor. The qualities of reflected wavelengths indicate any changes in the refractory index. The temperature turning is simply deducted from the overall change and the difference is credited to the voltage. This is referred to as the voltage value compensated by temperature.
Optical sensors using Bragg grid will replace conventional electrical sensors with similar installation characteristics; The meters move in a similar way by means of screws, welds, epoxy and built -in location. Optical channels, however, can accommodate dozens of sensors and ensure safe and clear transmissions over long distances. Therefore, these sensors can go where conventional sensors fail.
The use of the Bragg grid allows fiber to its own wavelength and bandwidth. It provides reflectivity necessary to adapt the amount of applications and terrain conditions. Fiber innovation means many improvements to more complex and costly watering cansnative systems.