Subwavelength plastic fiber for terahertz wave guiding

Chi Kuang Sun; Li Jin Chen; Hung Wen Chen; Ja-Yu Lu

doi:10.1117/12.687350

Subwavelength plastic fiber for terahertz wave guiding

Chi Kuang Sun, Li Jin Chen, Hung Wen Chen, Ja-Yu Lu

Department of Photonics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

We report a simple subwavelength-diameter plastic wire, similar to an optical fiber, for guiding terahertz wave with a low attenuation constant. With a large wavelength-to-fiber-core ratio, the fractional power delivered inside the lossy core is reduced, thus lowering the effective fiber attenuation constant. In our experiment, we adopt a polyethylene fiber with a 200-500 μm diameter for guiding terahertz waves in the frequency range of 0.2-0.5 THz in which the attenuation constant is reduced to the order of or less than 0.01 cm^-1. Direct free-space coupling efficiency, as high as 20%, can be achieved by using an off-axis parabolic mirror. Furthermore, all the plastic wires are easily available in our daily life without complex processes and expensive costs.

Original language	English
Title of host publication	Terahertz Physics, Devices, and Systems
DOIs	https://doi.org/10.1117/12.687350
Publication status	Published - 2006 Dec 1
Event	Terahertz Physics, Devices, and Systems - Boston, MA, United States Duration: 2006 Oct 2 → 2006 Oct 4

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6373
ISSN (Print)	0277-786X

Other

Other	Terahertz Physics, Devices, and Systems
Country	United States
City	Boston, MA
Period	06-10-02 → 06-10-04

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering
Condensed Matter Physics

Access to Document

10.1117/12.687350

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Cite this

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title = "Subwavelength plastic fiber for terahertz wave guiding",

abstract = "We report a simple subwavelength-diameter plastic wire, similar to an optical fiber, for guiding terahertz wave with a low attenuation constant. With a large wavelength-to-fiber-core ratio, the fractional power delivered inside the lossy core is reduced, thus lowering the effective fiber attenuation constant. In our experiment, we adopt a polyethylene fiber with a 200-500 μm diameter for guiding terahertz waves in the frequency range of 0.2-0.5 THz in which the attenuation constant is reduced to the order of or less than 0.01 cm-1. Direct free-space coupling efficiency, as high as 20%, can be achieved by using an off-axis parabolic mirror. Furthermore, all the plastic wires are easily available in our daily life without complex processes and expensive costs.",

author = "Sun, {Chi Kuang} and Chen, {Li Jin} and Chen, {Hung Wen} and Ja-Yu Lu",

year = "2006",

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series = "Proceedings of SPIE - The International Society for Optical Engineering",

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AU - Sun, Chi Kuang

AU - Chen, Li Jin

AU - Chen, Hung Wen

AU - Lu, Ja-Yu

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N2 - We report a simple subwavelength-diameter plastic wire, similar to an optical fiber, for guiding terahertz wave with a low attenuation constant. With a large wavelength-to-fiber-core ratio, the fractional power delivered inside the lossy core is reduced, thus lowering the effective fiber attenuation constant. In our experiment, we adopt a polyethylene fiber with a 200-500 μm diameter for guiding terahertz waves in the frequency range of 0.2-0.5 THz in which the attenuation constant is reduced to the order of or less than 0.01 cm-1. Direct free-space coupling efficiency, as high as 20%, can be achieved by using an off-axis parabolic mirror. Furthermore, all the plastic wires are easily available in our daily life without complex processes and expensive costs.

AB - We report a simple subwavelength-diameter plastic wire, similar to an optical fiber, for guiding terahertz wave with a low attenuation constant. With a large wavelength-to-fiber-core ratio, the fractional power delivered inside the lossy core is reduced, thus lowering the effective fiber attenuation constant. In our experiment, we adopt a polyethylene fiber with a 200-500 μm diameter for guiding terahertz waves in the frequency range of 0.2-0.5 THz in which the attenuation constant is reduced to the order of or less than 0.01 cm-1. Direct free-space coupling efficiency, as high as 20%, can be achieved by using an off-axis parabolic mirror. Furthermore, all the plastic wires are easily available in our daily life without complex processes and expensive costs.

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