Cutting positioning fixed focus aligning optical fiber fusion splicer

Abstract

The invention provides a cutting positioning fixed focus aligning optical fiber fusion splicer comprising a mechanical part, a circuit part, a hot melting furnace and a casing, wherein the mechanicalpart adopts a new fixed focus aligning structure, which combines cutting and aligning operations together; the new fixed focus aligning structure keeps constant focal length of the lens to the weldedoptical fiber when aligning, which ensures the final image quality of the aligning process; in the aligning process, the relative positions of the optical fibers and electrodes are unchanged, which further ensures the quality of discharge welding; the aligning structure can also derive a connecting platform suitable for special optical fiber fusion. Compared with the existing optical fiber fusiontechnology, the cutting positioning fixed focus aligning optical fiber fusion splicer provided by the invention reduces working steps, improves welding quality and consistency, reduces the number of structural parts, reduces the size, enhances portability and reduces costs.

Description

technical field [0001] The present invention relates to an optical fiber fusion splicing machine, in particular to an optical fiber microscope lens, an image sensor, an optical fiber V-groove, a fusion splicing electrode, and an optical fiber fusion splicing core adjustment structure (X / Y / Z axis alignment X / Y / Z axes are defined as attached to the specification. figure 2 , in this specification, the same below) is combined into an optical fiber fusion splicer with an integral structure to participate in the core adjustment operation. [0002] The present invention also relates to placing and cutting two opposite-core optical fibers at the same time (the optical fiber described in this manual is set as an optical fiber that has been stripped of the coating layer, the same below). And it is an optical fiber fusion splicer that can meet the horizontal direction (Z axis) adjustment requirements by using a displacement adjustment structure with a short stroke. [0003] technical ba...

AI Technical Summary

Problems solved by technology

[0018] 1. The micro-imaging structure and the core base are fixed as a whole, and the core-adjusting structure and the V-groove of the optical fiber move relative to the core base during core-alignment; in this way, the core-adjusting process will lead to the relative position of the optical fiber and the micro-imaging structure changes, resulting in out-of-focus and inaccurate imaging; the existing solutions are either to continue to use the out-of-focus image and sacrifice the alignment quality (commonly known as the four-motor fiber fusion splicer), or to add a set of focusing devices installed between the movement and the display. The position of the lens and the image sensor is constantly adjusted between the micro-imaging structures to adapt to the position-changing optical fiber to ensure the imaging quality and welding quality (commonly known as the six-motor fusion splicer); It is to increase the complexity of structural parts and movement and the cost of the whole machine

[0019] 2. The electrode base and the electrodes installed on it are relatively fixed to the core base. The core adjustment structure and the V-groove of the optical fiber move relative to the core during core adjustment. When the optical fiber core is adjusted, the core base does not move, and the electrode position is also fixed. The connection of the electrode axis is also fixed. In this way, the process of aligning the core will cause the fiber alignment end face to deviate from the connection of the electrode axis, that is, the position of the arc. The disadvantage is that this deviation will cause instability of the connection loss; currently there are The research and development organization tries to make synchronous vibration movement of the electrode during discharge, which can make the arc form a surface during the vibration process, compensate for the offset caused by the fiber core adjustment, and thus improve the welding quality

There are also companies that install three electrodes at the radius of the arc, aim at the center of the circle and discharge at the same time, and the fiber connection point is located at the center of the circle. Although this design improves the plasma high-temperature environment, it also makes the structure more complicated.

There are also enterprises that use "Ω" shaped graphite wire heating furnace or carbon dioxide laser to heat the connection point. Although the effect is good, the cost of this solution is relatively high.

[0020] 3. When operating according to the current procedure, the optical fiber needs to be cut by the fiber cutter and taken out, and then placed on the host of the fusion splicer for fusion splicing operation. The process of taking out and placing the optical fiber after cutting is easy to damage the end face of the optical fiber, contaminate environmental foreign matter, and reduce Splicing quality; the mechanical main structure of the optical fiber fusion splicer with the core-aligning structure does not have the function of cutting and positioning the two-core optical fiber and directly pushing it to the core-aligning V-groove

[0022] 5. The fiber optic protective sleeve heater is used as an accessory of the optical fiber fusion splicer. Due to the different standards of the protective sleeve and poor quality consistency during heating, the surface of the heater and the heat shrinkable protective sleeve sometimes cannot be well fitted and contacted, resulting in Heating efficiency drops

[0024] The inventor's patent number is ZL 2012 1 0095313.0, ZL 2012 1 0095323.4, ZL 2012 10095322.X, ZL 2012 1 0095311.1 ZL 2013 2 0010282.4 ZL2013 2 0540553.7 After the fusion splicing machine is taken out and the design of the main machine is changed after the cutting operation mode, which can cut two-core optical fibers at the same time, and actively push the V-groove of the optical fiber to the side of the cut optical fiber, adjust the single direction of the Z-axis by single-axis imaging, and complete the fiber splicing; On the V-groove, this kind of fixed optical fiber V-groove cannot perform X / Y-axis core adjustment of the optical fiber, and the accuracy of the V-groove will be affected by the adhesion of fine particles; therefore, it also causes fiber optic connection attenuation after long-term use The problem of a large drop in the stability of the

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