Manufacturing method of multimode optical fiber coupler based on single mode light source

Abstract

The invention provides a manufacturing method of a multimode optical fiber coupler based on a single mode light source. The manufacturing method based on the single mode light source comprises the steps of providing two multimode optical fibers and the light source making a monomode optical fiber as an output optical fiber; welding the monomode optical fiber to one multimode optical fiber; stripping an optical fiber coating layer with a certain length from each multimode optical fiber, and wiping each inner wrapping layer clearly; placing the multimode optical fibers on an absorption platform of tapering equipment, enabling the output ends of the multimode optical fibers to be connected to the splitting ratio on-line monitoring end of the tapering equipment, and using a clamp for enabling the two multimode optical fibers to get close; setting tapering process parameters; starting the tapering equipment so as to conduct tapering on the two multimode optical fibers; conducting packaging of quartz grooves, quartz tubes and stainless steel tubes on an obtained semi-finished product of the multimode optical fiber coupler, and obtaining the multimode optical fiber coupler based on the single mode light source. Through the method, stable coupling, at any splitting ratio, of the multimode optical fiber coupler is achieved, stability of product performance is guaranteed, and the using range of the multimode optical fiber coupler is expanded.

Description

technical field [0001] The invention belongs to the field of integrated optics, and in particular relates to a method for preparing a multimode fiber coupler based on a single-mode light source. Background technique [0002] Multimode fiber coupler is a basic passive device in the field of optical fiber communication and optical fiber sensing, and is widely used in optical fiber data network, communication system and optical fiber sensing system. Compared with single-mode fiber, multimode fiber has lower bending loss, and multimode fiber has irreplaceable functions of single-mode fiber. Multimode couplers have irreplaceable market applications. At present, the preparation methods of multimode fiber couplers are all based on the preparation methods of multimode light sources. [0003] The principle of coupling and splitting of multimode fiber couplers is based on the principle of total reflection of light waves transmitted in optical fibers. In total reflection, the light ...

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Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a method for preparing a multimode fiber coupler based on a single-mode l

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