High-mechanical-strength quick self-positioning locking structure for optical fiber coupling

Abstract

The invention belongs to the technical field of optics, and particularly relates to a high-mechanical-strength quick self-positioning locking structure for optical fiber coupling. The structure comprises a coupling constraint part, a coupling fixing part and an optical fiber fixing part, wherein the coupling constraint part comprises a coupling constraint main body and a connecting block, the connecting block is fixedly installed on the right side wall of the coupling constraint main body, the coupling fixing part is fixedly installed on the right side wall of the coupling constraint main bodyand comprises a coupling fixing main body, a first spring, a positioning fixing wedge, a second spring and a positioning fixing wedge groove, a plurality of positioning fixing wedge grooves are formed in the middle of the inside of the coupling fixing main body, and the inner walls of the plurality of positioning fixing wedge grooves are clamped with the first spring. According to the invention,an optical fiber fixing rod is locked at a required position accurately, stably and more robustly, an optical fiber and a laser system are rapidly combined and separated simultaneously, and the comprehensive effect of mechanical strength is improved.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a fast self-positioning locking structure with high mechanical strength for optical fiber coupling. Background technique [0002] At present, the optical fiber coupling structure is aimed at two different purposes: one is a coupling method for high-energy laser transmission. There are high requirements for conduction efficiency and mechanical tensile resistance. This structure on the market is a screw-locking structure represented by the SMA905 standard. The disadvantage of this structure is poor positioning, and professional equipment is required for each fiber insertion and removal. The coupling adjustment of the optical fiber is to ensure the transmission rate of the optical power, which is difficult to satisfy the fiber transmission system that requires frequent plugging and unplugging; the other is the coupling method for low-energy laser transmission, which is used for opt...

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Problems solved by technology

[0002] At present, the optical fiber coupling structure is aimed at two different purposes: one is a coupling method for high-energy laser transmission. There are high requirements for conduction efficiency and mechanical tensile resistance. This structure on the market is a screw-locking structure represented by the SMA905 standard. The disadvantage of this structure is poor positioning, and professional equipment is required for each fiber insertion and removal. The coupling adjustment of the optical fiber is to ensure the transmission rate of the optical power, which is difficult to satisfy the fiber transmission system that requires frequent plugging and unplugging; the other is the coupling method for low-energy laser transmission, which is used for optical fiber communication , it has higher requirements on the dispersion, insertion loss and mode transmission of optical signals. This kind of structure in the market is based on SC or LC as the standard insertion locking structure. Because optical fiber communication uses poor tensile strength Single-mode fiber, so this coupling structure does not take mechanical tolerance into account, and its disadvantage is poor mechanical tolerance

[0003] None of the existing technologies can meet the requirements of high mechanical tolerance. The positioning of the SMA905 fiber coupling structure is poor, the coupling is difficult and slow, and the light transmission efficiency of the SC / LC fiber coupling structure is low, and the anti-damage threshold is low. Therefore, it is urgent to develop a High mechanical strength fast self-positioning locking structure for fiber coupling

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