QBH Fiber Optic Cable Introduction Guide

QBH fiber optic cables play an important role in laser machine applications, especially in high-power laser transmission and precision laser processing. They are designed to transmit laser beams while maintaining high transmission efficiency and low loss to ensure laser accuracy and stability. QBH fiber cables are widely used in the laser field to connect optical fibers to laser systems, laser sources, and other precision equipment.

1. What is QBH Fiber Optic Cable?

QBH fiber optic cable is an international standard interface model for high-power fiber laser transmission. It integrates high-power cladding light stripper and end cap fusion, low transmission loss, high carrying power, high reflection tolerance, and provides water cooling and safety interlocking functions. The column of the QBH fiber head is of standard size. There is a cone for coaxial positioning above the laser output window. Three guide grooves are processed on the side of the column. Two copper rings are embedded above the grooves for electrical signal interlocking.

2. Conventional Parameter Types

The common parameter types and fiber cable types at the input end are: 135/155DCF, 200/220DCF, 200/242DCF, 300/360DCF, 400/480DCF, 600/660DCF, etc.

Parameters	Specifications
Working wavelength	450, 808, 880, 915, 1064, 1080, 2000nm
Input fiber type	135/155 DCF, 200/220 DCF, 200/242 DCF, 300/360 DCF, 400/480 DCF, 600/660 DCF
Numerical aperture (NA) of fiber	0.22/0.46
End cap diameter	8mm
Optical power	500-5000W
Output fiber length	5-20M
Working temperature	0~+70℃
Storage temperature	-45~+85℃
Protective device	Temperature control protection + safety lock
Cooling method	Water cooling or air cooling

3. QBH Fiber Optic Cable Plugging and Unplugging

Optical Fiber Access

• First place the laser head and the optical fiber interface in a horizontal state;
• Do not remove the protective cover or protective tape of the laser head first;
• Remove the fiber optic cable dust cap and check whether there is dust on the QBH and the optical fiber connector. If there is, clean it with a dust-free cleaning stick and IPA;
• Remove the protective cover;
• Gently insert the optical fiber into the QBH;
• After inserting to the bottom, rotate the two red marks on the rotating sleeve as shown in the figure below to align with the white mark frame, or turn it until it cannot be rotated;
• Then pull up the rotating sleeve in the direction shown in the figure;
• After pulling it up, gently rotate it again with moderate force, usually it feels tight. It can be aligned or exceeded in the middle, but be careful not to twist it again.

Pulling Out the Optical Fiber

Reverse the above steps. Note:

• The laser head and the optical fiber head must be cleaned before disassembly.
• The laser head must be pulled out horizontally when plugging and unplugging the optical fiber.
• After the fiber optic cable is pulled out, the optical fiber output head must be protected with a dust cap immediately

4. Application Scenario

QBH fiber optic cables are mainly used for beam transmission of laser machines and are widely used in the following fields:

• In laser cutting machines, QBH fiber optic cables are used to transmit the laser beam from the laser generator to the cutting head to ensure high-precision cutting.
• QBH fiber optic cables can be used in laser welding equipment to stably transmit high-power lasers for precise welding.
• In laser marking and engraving machines, QBH fiber optic cables also play a vital role in ensuring the stability of laser beam transmission and ensuring processing results.
• Some medical laser systems also rely on QBH fiber optic cables for precise beam transmission to ensure high efficiency and accuracy during treatment.

Summary

Through efficient beam transmission and precise fiber coupling, QBH cables can ensure high-precision, high-power transmission during laser processing, and have strong anti-interference ability. Whether in industrial manufacturing or high-tech applications, QBH fiber optic cables can provide stable and reliable performance to meet the high requirements of laser equipment for transmission quality and accuracy.

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