Stable adjusting device for optical fiber core imaging size

Abstract

The invention discloses a stable adjusting device for the imaging size of an optical fiber core, and the device comprises a support which is provided with an optical fiber imaging assembly and a drive assembly. The optical fiber imaging assembly is in sliding fit with the bracket; the upper and lower sides of the optical fiber imaging assembly are respectively provided with a compression spring, one end of each compression spring is connected with the optical fiber imaging assembly, and the other end is connected with the support. The driving assembly comprises a stepping motor, an eccentric wheel is fixedly arranged at the end of an output shaft of the stepping motor, and a bearing is arranged on a central wheel shaft of the eccentric wheel. The outer wall face of the bearing is attached to the end, away from the optical fiber, of the optical fiber imaging assembly. The lens is close to the optical fiber through the structure of the stepping motor, the eccentric wheel and the bearing, the lens is far away from the optical fiber through cooperation of the two compression springs, the structure is simple, assembling is easy and convenient, and cost is low; and meanwhile, the compression springs are arranged on the upper and lower sides of the cavity, so that the stability of optical fiber core imaging size adjustment is enhanced.

Description

technical field [0001] The invention belongs to the technical field of optical fiber imaging focus adjustment, and in particular relates to a stable adjustment device for optical fiber core imaging size. Background technique [0002] In optical fiber communication, the loss of optical fiber fusion is the key to the quality of optical fiber fusion. Improving the accuracy of fiber core alignment is the main way to reduce splicing loss and improve splicing quality. [0003] To achieve precise alignment of the fiber core, it is first necessary to accurately and stably adjust the imaging size of the fiber core. At present, for the adjustment of the imaging size of the optical fiber core, most of them use mechanical structures such as motors, gear sets, screws, and screw sleeves to realize the approach of the lens and the optical fiber, and use the cooperation of springs to realize the distance between the lens and the optical fiber. [0004] However, the assembly of mechanical ...

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Problems solved by technology

[0004] However, the assembly of mechanical structures such as motors, gear sets, screws, and screw sleeves is relatively complicated, which increases the cost; at the same time, the adjustment of the lens away from the optical fiber only relies on a spring on one side, so that the movement stability of the lens away from the optical fiber is not high.

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