A kind of tapered micro-nano optical fiber preparation device and preparation method

Abstract

The invention relates to the technical field of manufacturing, regulating and controlling of micro-nanofibers, and provides a conical micro-nanofiber preparation device and a conical micro-nanofiber preparation method. The device comprises an optical fiber clamp, a pipe, a positioning plate, a pneumatic device, an annular electrode, an electrode plate and a high-voltage power source, wherein the annular electrode and the electrode plate are electrically connected with the high-voltage power source; a pipe orifice is grounded; a highfield is formed between the pipe orifice and the electrode plate and is used for stretching optical fiber raw material liquid drop hung at the tail ends of bar-shaped optical fibers; micro-nanofibers with lumber spines are formed at the tail ends of the bar-shaped optical fibers by optical fiber raw materials under effects of electric field force; and the waist diameters of the micro-nanofibers are micro-nano level. In the method, a multilayered electrode controlling technology is introduced, unsteady motion of cones in a cone pulling process can be eliminated, the stretching speed is controlled by adjusting the value of voltage on the annular electrode, and sizes of various cross sections of the conical optical fibers can be accurately controlled, so that the required structure sizes of the conical optical fibers are acquired.

Description

technical field [0001] The invention relates to the technical field of manufacturing control of micro-nano optical fiber, in particular to a preparation device and method for tapered micro-nano optical fiber. Background technique [0002] At present, the research of photonic devices has been developing towards the direction of device integration and miniaturization. Micro-nano fiber is the basic component of photonic devices. How to effectively reduce the size of micro-nano fiber is one of the effective ways to integrate and miniaturize active photonic devices. Because the diameter of the tapered micro-nano fiber varies linearly with the fiber, and its fiber taper has coupling, polarization, transmission and modulation characteristics, it has applications in the fields of micro-nano optics, near-field optics, fiber optic sensing and detection, etc. [0003] The preparation of tapered micro-nano fiber usually adopts the fusion tapering method. First, the fiber needs to be he...

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