With its excellent performance and low price, lasers have been widely used in the fields of optical fiber communication, optical fiber sensing, industrial processing, medical, military and so on.
In terms of communication, the lasers provided by the laser in the 1.30 micron and 1.55 micron bands are two low loss windows for communication. The laser not only produces continuous laser output, but also enables the generation of ultra-short optical pulses of ps-fs, which has huge potential applications in DWDM systems. The laser makes the communication system have a higher transmission speed and a longer transmission distance, which plays an irreplaceable role.
In terms of sensing, lasers are used in phase-, wavelength-, intensity-, and polarization-mode fiber sensing. Temperature and pressure can be measured in oil or gas wells; strain can be measured in roads, bridges and hulls; flight health monitoring in aircraft wings; and in fiber optic hydrophones and current sensing.
In the industrial field, lasers have made great achievements in the processing and processing of metal and non-metal materials, laser engraving, laser product marking, laser welding, weld cleaning, precision drilling and laser graphic art imaging.
In medical applications, lasers have been widely used due to their small size, good fiber flexibility, good beam quality, and no need for a cooling system. Fiber lasers enable shorter surgical time for tissue shedding and photocoagulation: at the same time, the success rate of ophthalmic diseases such as keratoplasty, myopia, and hyperopia is greatly improved. It also plays an important role in cosmetic surgery, tumor removal, cancer treatment, and skin diseases.
On the military side, high-power lasers are favored for their high brightness, small illumination area, and small size. As a weapon, it can accurately target and destroy targets. It also has important significance in positioning, ranging, remote sensing, tracking guidance, laser radar system sensing technology and space technology.