Dual and Multi-wavelength Fiber Coupled Laser Module

Dual and Multi-wavelength Fiber Coupled Laser Module

Mar 05, 2021

Due to the limitations of nonlinear effects, thermal effects, and material damage thresholds in fiber lasers, the output power of single-tube-coupled fiber lasers is limited, and as the power increases, the beam quality gradually decreases. It is necessary to adopt mode control technology and only a new type of optical fiber with a special structure can improve the beam quality.


However, the multi-single-tube fiber-coupled laser adopts the multi-single-tube coupling technology. Several or even dozens of LDs are superimposed through a reasonable optical path design to couple into the fiber. The power can be greatly improved.


At the same time, Dual and multi-wavelength fiber lasers all would be get a high output power. It has the advantages of compatibility with fibers and fiber devices, narrow linewidth, low noise, and good beam quality. They have important applications in fiber communications, fiber sensing, and high-resolution optical testing. Elite Optoelectronics Co., provides a wavelength range of 635-1064nm, takes 2-4 wavelengths combined into a system (or combined multiple wavelengths according to customer needs), laser shape size can be customized, wavelength and output power can be chosen freely.



In the industrial field, fiber lasers can be divided into three levels according to the output power :


1) Low-power fiber lasers (<50 watts), which are mainly used in microstructure processing, laser marking, resistance adjustment, precision drilling, metal engraving, etc.;

2) Power fiber laser (50~500 watts), mainly used for punching, welding, cutting and surface treatment of thin metal plates;

3) High power fiber laser (>1000 watts), mainly used for cutting thick metal plates, metal surface coating and three-dimensional processing of special plates, etc.


The light spot output from the optical fiber is generally a circular light spot with a certain divergence angle. The specific spot size is related to the fiber core diameter, and the divergence angle is determined by the fiber numerical aperture. Commonly used optical fibers are divided into single-mode and multi-mode. The single-mode core diameter ranges from 2.9 μm to 9 μm, and the multi-mode core diameter ranges from 50 μm to 400 μm. The numerical aperture is generally 0.15NA and 0.22NA.


Please attention to the optical fiber bending when you operating it. (The optical fiber should not be bent at a large angle to prevent the optical fiber from being broken. The bending radius should be greater than 300 times the diameter of the fiber cladding, and the dynamic bending radius should be greater than 400 times.)


If you want to know more about fiber coupled lasers, please feel free to call us at 86-29-68590616 or email to!