The transmission distance of the optical module refers to the distance over which the optical signal can be directly transmitted without relay amplification. It is divided into three types: short-distance, medium-distance, and long-distance. Generally speaking, 2km and below are short distances, 10-20km are medium distances, and 30km, 40km and above are long distances. Optical ...

Fiber Laser refers to a laser that uses rare earth-doped glass fiber as the gain medium. Fiber lasers can be developed on the basis of fiber amplifiers. High power density is easily formed in the fiber under the action of pump light, resulting in laser The laser energy level of the working substance is "population inversion", and when a positive feedback loop (to form a resonan...

In the mid-1980s, Beklemyshev, Allrn and other scientists combined laser technology and cleaning technology for practical work needs and conducted related research. Since then, the technical concept of laser cleaning (Laser Cleanning) was born. It is well known that the relationship between pollutants and substrates The binding force is divided into covalent bond, double dipole...

Lasers can be classified by pumping method, gain medium, operating method, output power, and output wavelength.

The fiber cut-off wavelength is to ensure that only one mode exists in the fiber. One of the main transmission characteristics of single-mode fiber is the cut-off wavelength, which is of great significance for fiber optic cable manufacturers and users of fiber optic cables to design and use fiber optic transmission systems.

The SLED light source is an ultra-wideband light source designed for special applications such as sensing, fiber optic gyroscopes, and laboratories.

Optical fiber test charts include: optical power meters, stable light sources, optical multimeters, optical time domain reflectometers (OTDRs), and optical fault locators.

Semiconductor lasers are commonly known as laser diodes. They are called semiconductor lasers because of the characteristics of using semiconductor materials as working materials. The semiconductor laser is composed of a fiber-coupled semiconductor laser module, beam combining device, laser energy transmission cable, power supply system, control system and mechanical structure....