Electric control tunable porous terahertz band gap optical fiber

Abstract

The invention discloses an electric control tunable porous terahertz band gap optical fiber. The substrate of the optical fiber is made of a plastic polymer; a fiber core of the optical fiber is composed of air holes arranged in a triangular lattice manner; the coating layer of the optical fiber is formed by composite air holes arranged in a triangular lattice and honeycomb lattice manner; and a nematic phase liquid crystal which is sensitive to an electric field is filled in the air holes arranged in the triangular lattice manner in the coating layer. With the adoption of the electric control tunable type porous terahertz band gap optical fiber, the direction of liquid crystal molecules is changed by controlling an electric field around the optical fiber, so as to change the refractive index of the liquid crystal, and therefore, the band gap property, the conduction mode, the transmission property and the transmission spectral line of the optical fiber can be controlled, and the functions of tunable filtering, switching and the like of terahertz waves can be realized; and furthermore, most guided mode energy is limited in the air holes of the fiber core, so that the absorption consumption of the substrate material on the guided mode energy can be effectively reduced.

Description

technical field [0001] The invention relates to a plastic polymer holey fiber, in particular to an electrically controlled and tunable holey terahertz bandgap fiber. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency between 0.1 THz and 10 THz and a wavelength between 30 μm and 3 mm. It is between microwave and infrared radiation, and it is a transitional field from electronics to photonics. Due to the special spectral position of the terahertz wave, it has the superior characteristics of perspective, safety, and high spectral signal-to-noise ratio. It has important academic and application values ​​and has been widely used in object imaging, spectral analysis, and medical diagnosis. , material analysis and testing, and wireless communication and other technical fields. It can be said that terahertz technology not only occupies an important academic position in scientific research, but also has important strategic significance for...

AI Technical Summary

Problems solved by technology

However, the special position of terahertz waves in the electromagnetic spectrum determines that terahertz waves exhibit unique properties different from microwaves and light waves when interacting with matter, which makes terahertz technology not only bring many advantages, but also make mature optoelectronic technology The application of microwave technology and microwave technology in the terahertz band is greatly restricted. Therefore, according to the specific characteristics of terahertz waves, the development of practical functional devices is one of the major challenges facing the development of terahertz science and technology.

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