1576nm 10mW DFB Butterfly Laser Diode Manufacturers

Recently, many people in the optical module industry chain have said frankly that the demand for 5G is not as good as expected. At the same time, LightCounting also pointed out in the latest report that 5G deployment is slowing, especially in the Chinese market. Do not have much hope for the return of 5G fronthaul demand in the short term.

An EDFA is a fiber amplifier based on the erbium-doped fiber principle. It boasts advantages such as a wide wavelength range, high amplification gain, low noise, and high reliability. It is widely used in optical communication systems.

Laser distance measuring is measured using a laser as a light source.It is divided into continuous laser and pulse laser according to the mode of laser operation.Gas lasers like helium-neon, argon ion, krypton cadmium and so on work in a continuous output state for phase laser ranging, dual heterogeneous GaAs semiconductor laser for infrared ranging; solid laser such as ruby, neodymium glass, for pulse laser ranging.Laser rangefinder due to the characteristics of good monochromy and strong orientation of laser, coupled with the semiconductor integration of electronic lines, compared with the photoelectric rangefinder, it can not only work day and night, but also improve the rangefinder accuracy.

The traditional laser uses the thermal accumulation of laser energy to melt and even volatilize the material in the active area. In the process, a large number of chips, micro-cracks and other processing defects will be generated, and the longer the laser lasts, the greater the damage to the material. The ultra-short pulse laser has an ultra-short interaction time with the material, and the single-pulse energy is super strong enough to ionize any material, realize non-hot-melt cold processing, and obtain the ultra-fine, low-damage processing advantages incomparable with long-pulse laser. At the same time, for the selection of materials, ultrafast lasers have wider applicability, which can be applied to metals, TBC coatings, composite materials, etc.

Structural design optimization: The three basic principles of semiconductor lasers are: electrical injection and confinement, electrical-optical conversion, optical confinement and output, which correspond to electrical injection design, quantum well design, and optical field design of the waveguide structure, respectively. Optimizing the structure of quantum wells, quantum wires, quantum dots, and photonic crystals has promoted the continuous improvement of laser technology, making the output power and electro-optical conversion efficiency of lasers higher and higher, beam quality getting better and better, and higher reliability .

Some solid-state laser gain media are doped with transition metal ions, and the transitions involved are those of electrons in the three-dimensional shell. Figure 1 shows the commonly used transition metal ions and their host media.