Fiber optical tweezers based on four-core helical fiber and manufacturing method thereof

Abstract

Provided are fiber optical tweezers based on a four-core helical fiber, characterized in that the fiber optical tweezers are composed of a micro-nanofiber; the micro-nanofiber is internally provided with four micro-nanofiber cores which are distributed in the micro-nanofiber in a helical mode; on any cross section of the micro-nanofiber, the distance between each of the four micro-nanofiber cores and the axis of the four micro-nanofiber is the same; the four micro-nanofiber cores are circumferentially and uniformly distributed along the four micro-nanofiber, and respectively form four helical structural bodies with a same pitch and thread diameter. The invention provides new fiber optical tweezers which allow small particles to perform rotational motion only by adjusting incident light parameters.

Description

Technical field [0001] The invention relates to an optical tweezers, in particular to an optical fiber optical tweezers based on a four-core spiral optical fiber and a manufacturing method thereof. Background technique [0002] Optical tweezers is a device that can capture tiny particles and has a wide range of applications. In the prior art, there are generally two methods for forming optical tweezers: one is to generate a laser beam by a laser, and then expand the beam. The laser beam is processed by the laser beam regulator and the light intensity regulator, and the processed beam is introduced into the microscope system, and the light trap formed by the beam is used to capture the particles. The hardware system of this optical tweezers is large in size, which is not conducive to miniaturization; One is fiber optic tweezers, that is, the use of optical fiber to emit laser beams to control particles. The size of fiber optic tweezers is small and can be independent of the micros...

AI Technical Summary

Problems solved by technology

[0002] Optical tweezers is a device that can capture tiny particles, and it has a wide range of applications at present; in the prior art, there are generally two methods for forming optical tweezers: one is to generate a laser beam through a laser, and then expand the beam The laser beam is processed by a device and a light intensity regulator, and the processed beam is introduced into the microscope system, and the microparticles are captured through the optical trap formed by the beam. The hardware system of this kind of optical tweezers is large in size, which is not conducive to miniaturization; One is fiber optic tweezers, which use the laser beam emitted from the fiber to control particles. The fiber optic tweezers are small in size and can be independent of the microscope system, so they have great application prospects. Although fiber optic tweezers have obvious advantages, they also have some defects. : The particles captured by the optical fiber tweezers can only stay still in the light field, or guide the particles to perform simple one-dimensional linear motion through the forward or backward movement of the optical fiber optical tweezers as a whole; in engineering applications, it is often necessary for the particles to change the angle , when using the existing optical fiber tweezers to achieve angle adjustment, it is necessary to add multiple groups of optical fiber tweezers to control the particles at different angles and adjust the angle of the particles. This angle adjustment method is still the same as the discrete lens optical tweezers. Integrated combined operation, complex system, and very inconvenient for continuous adjustment operation

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