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Particle light operating device based on annular-core coaxial helix waveguide optical fiber

A ring core and helical wave technology, applied in the direction of optical waveguide light guide, cladding optical fiber, radiation/particle processing, etc., can solve the problems of low flexibility and difficult probe application

Active Publication Date: 2019-05-24
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
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Problems solved by technology

Although the system can achieve stable three-dimensional capture and rotation of particles, the system requires expensive and large spatial optical devices such as spatial light modulators, and its flexibility is not high, making it difficult to implement probe applications
Therefore, the researchers used the few-mode optical fiber tapered fiber-end probe to realize the three-dimensional capture and direction control of yeast cells (Jounal of Lightwave Technol, 2014, 32(6):1098-103), but this system cannot realize the Stable rotation function
In addition, Chen et al. also used the optical fiber LP21 mode to realize the rotation operation of biological cells (Journal of Optics, 2014, 16(12): 125302), but this system cannot form a stable three-dimensional capture of cells

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  • Particle light operating device based on annular-core coaxial helix waveguide optical fiber
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  • Particle light operating device based on annular-core coaxial helix waveguide optical fiber

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Embodiment Construction

[0021]The present invention is described in more detail below in conjunction with accompanying drawing example:

[0022] combine figure 1 , the embodiment of the present invention is composed of a ring-core coaxial helical waveguide fiber 1, and the fiber end of the fiber is ground to form a truncated cone 2 at the fiber end; the ring-core coaxial helical waveguide fiber 1 includes a cladding 3, a ring core 4 and A central core 6 consisting of a number of helical waveguides 5. On the one hand, when the ring light 7 is input to the ring-core coaxial helical waveguide fiber 1, the ring-core guided mode 8 will be excited in the ring core 4, and then pass through the frustum of the fiber end 2 (the separation between the cladding and the external medium). total internal reflection occurs at the interface), the reflected light wave 9 is diffracted in the cladding of the fiber end and transmitted to the end face of the fiber end, and then refracted at the fiber end to form a strong...

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Abstract

The invention relates to a particle light operating device based on an annular-core coaxial helix waveguide optical fiber. The particle light operating device is characterized in that the device comprises the annular-core coaxial helix waveguide optical fiber 1 with the fiber end polished into a fiber end cone frustum; the annular-core coaxial helix waveguide optical fiber 1 comprises a wrapping layer 3, an annular core 4 and a central core 6 consisting of multiple helix waveguides. The device can emit a strong-focusing ring lift field 10 from the fiber end of the annular-core coaxial helix waveguide optical fiber, and realizes stably three-dimensional capture of a particle 11 near the focusing point out of the fiber end, thereby realizing positioning and axis fixing functions to the particle 11; besides, fixed-axis rotation 15 and rotating ejection 16 of the particle 11 can be achieved by controlling energy of a phase vortex beam 14 emitted by the helix core. The particle light operating device can be used for light operation of micro-particles such as particles for optical information transmission, optical micro-operation and microimaging and drug particles, application of optical fiber integration devices and the like.

Description

(1) Technical field [0001] The invention relates to a particle light manipulation device based on a ring-core coaxial helical waveguide fiber, which can be used in the fields of optical information transmission, optical micromanipulation, microscopic imaging, light manipulation of tiny particles such as drug particles, and application of optical fiber integrated devices. . (2) Background technology [0002] The momentum of an electromagnetic field has two components: linear momentum and angular momentum. There are two types of angular momentum: spin angular momentum and orbital angular momentum. In 1992, Allen discovered that the light field has orbital angular momentum, which led to the further study of vortex beams. Since the vortex beam carries orbital angular momentum, its magnitude is Therefore, when the vortex beam is irradiated on the particles, the orbital angular momentum carried by the photons is directly transferred to the particles in micron and submicron ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02G21K1/00
Inventor 苑立波邓洪昌吕金超
Owner GUILIN UNIV OF ELECTRONIC TECH
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