Selective hydrophobic treatment method for air holes of hollow-core photonic crystal fiber

Abstract

The invention belongs to the technical field of microfluidic optical fiber devices, and specifically relates to a selective hydrophobic treatment method for air holes of a hollow-core photonic crystalfiber. The selective hydrophobic treatment method comprises the steps of performing selective sealing on the air holes of the hollow-core photonic crystal fiber, wherein a gas or liquid can be completely prevented from entering the sealed air holes after the air holes are sealed; and performing selective hydrophobic treatment on the air holes of the hollow-core photonic crystal fiber so as to enable the inner surfaces of the air holes to reach hydrophobic requirements. According to the invention, selective hydrophobic treatment can be performed on the air holes of the long-distance hollow-core photonic crystal fiber in one time, and each segment of the optical fiber can be directly used through cutting, thereby saving a lot of time and cost. In addition, the end face of the hollow-core photonic crystal fiber processed according to the method has no additional optical loss caused by structural damages, thereby not only being capable of realizing efficient free-space optical coupling, but also being capable of realizing low-loss connection of the optical fiber, and being an important technology in optical fiber functional device preparation and sensing application.

Description

Technical field [0001] The invention belongs to the technical field of microfluidic optical fiber devices, and specifically relates to a method for selectively performing hydrophobic or hydrophilic treatment on the pores of a hollow-core photonic crystal fiber. Background technique [0002] Microfluidic technology is an emerging cross-technology produced by the combination of photonics, optoelectronics and microfluidic science. Microfluidic technology involves different disciplines such as micro-nano manufacturing, chemical analysis, biomedicine, adaptive optics, new lasers, optoelectronic devices and new energy. Microfluidic optics technology not only inherits the advantages of microfluidic technology in microchemical and biological sample manipulation and analysis, but also provides new opportunities for miniaturization, integration, tunability, and low cost of traditional optical devices and systems. s solution. An important research platform of microfluidic technology is th...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for selective hydrophobic treatment of air holes in hollow-core photonic crystal fibers to solve the problem of selective filling of air holes in hollow-core photonic crystal fibers, so that the optical properties of hollow-core photonic crystal fibers are not greatly affected Under the premise, it is relatively easy to selectively fill the hollow core hole of the optical fiber

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