Array optical tweezers based on multicore polarization-preserving fiber and manufacturing method thereof

Abstract

The invention provides array optical tweezers based on multicore polarization-preserving fiber and a manufacturing method thereof. The array optical tweezers comprise the multicore polarization-preserving fiber, standard single-mode fiber and a laser light source, wherein the laser light source is connected with one end of the standard single-mode fiber, the other end of the standard single-mode fiber is connected with the multicore polarization-preserving fiber in a fusion conical pull coupling mode, and the other end of the multicore polarization-preserving fiber is manufactured into a centrum shape through fusion conical pull processing equipment. In the invention, a plurality of optical waveguide fiber cores are integrated in one fiber, thus not only saving physical space but also significantly reducing system input light power and reducing harm on particles to be captured. Meanwhile, the multicore fiber composite optical tweezers can capture particles more flexibly and accurately, and has adjustability, thus greatly improving the practicability of fiber and optical tweezers technologies. More importantly, the array optical tweezers can form a compact interference grid optical field array, so as to form optical potential wells at coherence enforcement points to realize functions such as filtering particles.

Description

technical field [0001] The invention belongs to the field of optical fiber technology research and relates to an array type optical tweezers. The invention also relates to a preparation method of array type optical tweezers. Background technique [0002] Optical tweezers are tools for trapping and manipulating tiny particles using the gradient force and scattering force of light intensity distribution. In 1986, Askin proposed a three-dimensional optical potential well based on a single-beam laser in the article "Observation of a single-beam gradient force optical trap for dielectric particles", which is used to realize the three-dimensional space control of particles, because this beam can achieve spatial The clamping of tiny particles, hence the name "optical tweezers", this article was published in Opt.Lett.11, 288-290. Since then, the optical tweezers technology has developed rapidly and has become an important research technology, and has promoted the rapid development...

AI Technical Summary

Problems solved by technology

Most of these new optical tweezers can realize the functions of capturing, spatially positioning, and spatially rotating a single particle, but it is rare to see a single-fiber optical tweezer that can operate multiple particles at the same time

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