High-power laser coupling structure

Abstract

A high-power laser coupling structure comprises a first contact pin, a second contact pin and a sleeve. The optical fiber group is permanently fixed in the insertion core by using epoxy glue; the contact piece is placed in the shell; and the contact pieces are in butt joint in the sleeve. The invention is suitable for high-power laser transmission, has the advantages of low insertion loss and lowlaser energy density of the optical end face, effectively prevents the optical end face from being ablated by laser, and has low processing difficulty.

Description

technical field [0001] The invention relates to the field of optical fiber connectors, in particular to a high-power optical fiber connector. Background technique [0002] Traditional single-mode optical fiber connectors mostly use physical connection methods, that is, the end faces of single-mode optical fibers are in direct contact to achieve low-loss transmission of optical signals. This connection method is not suitable for high-power laser transmission applications, mainly in the following aspects: [0003] 1. When the traditional single-mode optical fiber connector is used for high-power laser transmission, due to the high laser power density of the output and input end faces of the optical fiber, once the damage threshold of the optical fiber material is exceeded, it is easy to cause the end face of the optical fiber to burn and cannot continue to transmit light energy. [0004] 2. When the high-power laser passes through the output and input end faces of the optical...

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Problems solved by technology

[0003] 1. When the traditional single-mode optical fiber connector is used for high-power laser transmission, due to the high laser power density of the output and input end faces of the optical fiber, once the damage threshold of the optical fiber material is exceeded, it is easy to cause the end face of the optical fiber to burn and cannot continue to transmit light energy

[0004] 2. When the high-power laser passes through the output and input end faces of the optical fiber, tiny surface quality defects on the end face of the optical fiber, such as impurities, scratches and micro-defects, etc., will cause abnormal absorption of laser energy and cause the end face of the optical fiber to be burned, making it impossible to continue to transmit light energy

[0005] 3. When the high-power laser passes through the output and input end faces of the optical fiber, any pollutants on the end face of the optical fiber, such as dust, stains, etc., will cause abnormal absorption of laser energy, and cause the end face of the optical fiber to be burned, making it impossible to continue to transmit light energy

[0006] 4. In the process of repeated plugging and unplugging of traditional physical contact single-mode fiber optic connectors, the end face of the fiber is susceptible to wear. Once the end face of the fiber is damaged, when transmitting high-power lasers, the damaged end face of the fiber is prone to abnormal laser energy. Absorption, and cause the end face of the fiber to burn, unable to continue to transmit light energy

[0007] For the above application requirements of high-power laser single-mode transmission, there are currently non-contact optical fiber connectors that use lens beam expansion. However, this type of connector uses lenses for non-contact connection between optical fibers. The disadvantage is that the transmission loss is large and the interchangeability is poor. , parts processing and assembly are difficult and costly

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