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High-order mode optical tweezers based on bitapered four-mode fiber and its testing method

A test method and biconical technology, applied in the field of optical manipulation, can solve the problems of low mode coupling efficiency, low mechanical strength, and small diameter of the fiber cone area, and achieve the effects of improving mechanical strength, convenient preparation and strong operability

Inactive Publication Date: 2020-10-02
XI'AN PETROLEUM UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, single-fiber optical tweezers have the following disadvantages: the diameter of the fiber taper is small, the mechanical strength is low, and the service life is short; the mode coupling efficiency is low during optical transmission; it can only achieve controllable transmission in one-dimensional direction, and does not have high Practicality

Method used

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  • High-order mode optical tweezers based on bitapered four-mode fiber and its testing method
  • High-order mode optical tweezers based on bitapered four-mode fiber and its testing method
  • High-order mode optical tweezers based on bitapered four-mode fiber and its testing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] exist figure 1 , 2 Among them, the high-order mode optical tweezers based on biconical four-mode fiber in this embodiment is composed of an installation box 1, a fiber clamping table 2, a rotating beam 3, a fixed shaft 4, a fixed beam 5, a rotating fiber 6, and a fixed fiber 7.

[0026] The side panels around the installation box 1 and the bottom plate are fixedly connected with glue. The geometric shape of the installation box 1 is a cuboid. The length x width x height of the installation box 1 is 60mm x 60mm x 10mm. The positions are respectively processed with through holes a with a diameter of 1 mm. The base plate of the installation box 1 is fixedly installed with a fixed beam 5 and a rotating beam 3 with a fixed shaft 4, the two ends of the fixed beam 5 are fixed on the base plate of the installation box 1, the fixed beam 5 is fixed, and the rotating beam 3 can be rotated around the fixed shaft. 4 Rotation, the rotation range is 90°, the fixed beam 5 and the rot...

Embodiment 2

[0028] In this embodiment, through holes a with a diameter of 1 mm are respectively processed at the four corners of the side of the installation box 1 . Fixed crossbeam 5 and rotating crossbeam 3 are fixedly installed with fixed shaft 4 on the bottom plate of installation box 1, and the two ends of fixed crossbeam 5 are fixed on the bottom plate of installation box 1, and fixed crossbeam 5 is fixed, and rotating crossbeam 3 can be around fixed shaft 4 Rotate 25°, the fixed beam 5 and the rotating beam 3 are located in the same plane, the width of the fixed beam 5 and the rotating beam 3 are both 3mm, and the optical fiber holders 2 are respectively installed on the two ends of the fixed beam 5 and the rotating beam 3, and the fixed Fiber grooves are engraved on the upper surfaces of the beam 5 and the rotating beam 3. A rotating optical fiber 6 is placed in the fiber groove of the rotating beam 3. A fixed optical fiber 7 is placed inside, and the fixed optical fiber 7 is fixe...

Embodiment 3

[0031]In this embodiment, through holes a with a diameter of 1 mm are respectively processed at the four corners of the side of the installation box 1 . The fixed beam 5 and the rotating beam 3 are fixedly installed on the base plate of the installation box 1 with the fixed shaft 4, the two ends of the fixed beam 5 are fixed on the base plate of the installation box 1, the fixed beam 5 is fixed, and the rotating beam 3 rotates around the fixed axis 4 160°, the fixed beam 5 and the rotating beam 3 are located in the same plane, the width of the fixed beam 5 and the rotating beam 3 are both 3mm, and the optical fiber clamping table 2 is respectively installed on the two ends of the fixed beam 5 and the rotating beam 3, and the fixed beam 5 and the upper surface of the rotating beam 3 are engraved with fiber grooves, and the rotating fiber 6 is placed in the fiber groove of the rotating beam 3, and the rotating fiber 6 is fixed on the rotating beam 3 with the fiber clamping table ...

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Abstract

A high-order mode optical tweezers based on a double-tapered four-mode optical fiber and its testing method. Through holes are processed at the four corners of the side of the installation box. A fixed beam and a rotating beam are arranged on the bottom plate of the installation box. The two ends of the beam are equipped with fiber clamping tables, the upper surfaces of the fixed beam and the rotating beam are engraved with fiber grooves, the rotating fiber is arranged in the fiber groove of the rotating beam, and the fixed fiber is arranged in the fiber groove of the fixed beam, and the two sides of the rotating fiber and the fixed fiber are arranged. The end passes through the fiber hole, and the drip hole is processed on the top cover of the installation box. The present invention adopts the way that two or four mode optical fiber optical tweezers cones are placed intersectingly, and the crossing angle of the cones is adjustable, and the diameter of the cones is increased to 3±0.5 μm, which effectively improves the mechanical strength and mode coupling efficiency of the cones. The service life is prolonged, and the invention has the advantages of strong operability, convenient preparation and high practicability, and can be used for effective capture, linear drive and directional control of microorganisms.

Description

technical field [0001] The invention belongs to the technical field of light manipulation, and in particular relates to optical fiber optical tweezers. Background technique [0002] Optical fiber optical tweezers technology is a technology that uses the output beam of optical fiber to realize the non-mechanical contact capture and manipulation of particles. It can provide stable, accelerated, rotated, or directional movement for microorganisms, and its capture distance is much longer than that of the captured object. Scale, so no mechanical damage will be generated during the capture process and the environment around the microorganisms will not be affected. At present, optical tweezers technology has been widely used in the capture, sorting, and manipulation of cells, organelles, and chromosomes. [0003] Traditional optical tweezers use a microscope objective lens with a high numerical aperture to focus a laser beam to form an optical trap. Tiny objects are trapped in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B21/32G01N33/569
CPCG01N33/56916G02B21/32
Inventor 尹逊莉王亚杰荣强周
Owner XI'AN PETROLEUM UNIVERSITY