Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High double-refraction terahertz optical fiber

A high birefringence and terahertz technology, applied in the direction of cladding optical fiber, optical waveguide and light guide, etc., can solve the problem that the absorption loss cannot be reduced, and achieve the effect of facilitating the production of optical fiber and reducing the absorption loss

Inactive Publication Date: 2014-03-19
JIANGSU UNIV
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the core conduction mode is mainly transmitted in the matrix material, and its absorption loss cannot be reduced

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High double-refraction terahertz optical fiber
  • High double-refraction terahertz optical fiber
  • High double-refraction terahertz optical fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The structure of the holey core fiber is as figure 1 As shown, when the layered PTFE width=20μm, the period Λ=60μm, the inner diameter of the PTFE tube is D=1400μm, and the thickness of the PTFE tube is D 1 =200μm.

[0031] figure 2 The change curve of birefringence with the included angle θ is given. It can be seen from the figure that when θ is 90 o , the birefringence is 0, and as the θ angle becomes smaller, the birefringence begins to increase, when θ=30 o , the birefringence can reach 0.072. The reason for the high birefringence is that as the θ angle decreases, the proportion of x-polarized mode energy in the material increases and the proportion of y-polarized mode energy in the material decreases. This characteristic also causes x-polarized mode The increase in absorption loss and the decrease in y-polarized mode absorption loss, as image 3 shown. Figure 4The confinement loss of the two polarization modes varies with the angle θ. As θ decreases, the con...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a terahertz optical fiber comprising layered media (1) and a medium round tube (3). The terahertz optical fiber is characterized in that the layered media (1) are arranged in the medium round tube (3) with the same interval in two directions, a diamond-shaped cross structure is formed by the layered media (1) in two directions at the center of the medium round tube (3), an acute angle theta formed by the cross connection of the two directions is larger than or equal to 40 degrees and is less than or equal to 70 degrees, four air holes (4) are formed by the diamond-shaped cross structure and the medium round tube (3), the layered media (1) are fixed on the medium round tube (3), the layered media (1) at the diamond-shaped cross structure part and an air layer (2) are a fiber core, and the layered media (1) outside the diamond-shaped cross structure part, the air layer (2), the medium round tube (3) and the air holes (4) are a cladding layer. The whole body of the terahertz optical fiber is a total internal reflection structure. The fiber is suitable for terahertz wave transmission and has the advantages of low loss and high double-refraction rate.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to an optical fiber for transmitting terahertz waves. Background technique [0002] Terahertz (THz) usually refers to electromagnetic waves with a frequency in the range of 0.1 to 10 THz, and its band is between microwave and infrared in the electromagnetic spectrum. THz radiation has potential applications in many fields, such as communication, sensing, imaging, spectroscopy and medicine. In recent years, more and more research groups at home and abroad have carried out research on low-loss THz waveguides. Because materials have strong absorption for THz waves, reducing material absorption loss is the focus of people's research on THz waveguides. The existing optical fiber designs have Sub-wavelength fiber, holey fiber and hollow-core fiber, etc. The main idea is to distribute more core mode energy in the air, thereby effectively reducing material absorption loss. [0...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02
Inventor 祝远锋张永康陈明阳杨继昌曹祥祥孙浩石琳
Owner JIANGSU UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com