Although both spectrum and frequency spectrum are electromagnetic spectrum, due to the difference in frequency, the analysis methods and test instruments of spectrum and frequency spectrum are very different. Some problems are difficult to solve in the optical domain, but it is easier to solve them through frequency conversion to the electrical domain.
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. The laser output is realized under the driving and monitoring of the power supply system and control system.
Laser is a device that can emit laser. According to the working medium, lasers can be divided into four categories: gas lasers, solid lasers, semiconductor lasers and dye lasers. Recently, free electron lasers have been developed. High-power lasers are usually pulsed. Output.
ASE light source is specially designed for laboratory experiment and production. The main part of the light source is gain medium erbium-doped fiber and high-performance pump laser. The unique ATC and APC circuits ensure the stability of the output power by controlling the output of the pump laser. By adjusting APC, the output power can be adjusted within a certain range. Simple and intelligent operation and remote control.
DWDM(Dense Wavelength Division Multiplexing): is the ability to combine a group of optical wavelengths with a single optical fiber for transmission. This is a laser technology used to increase bandwidth on existing fiber optic backbone networks. More precisely, the technology is to multiplex the tight spectral spacing of a single fiber carrier in a specified fiber in order to utilize the achievable transmission performance (for example, to achieve the minimum degree of dispersion or attenuation). In this way, under a given information transmission capacity, the total number of optical fibers required can be reduced.
As a core driving force in the field of industrial manufacturing, laser technology itself is constantly moving forward. In summary, lasers are developing in the four major directions of "faster, higher, better, and shorter".
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