TY - GEN
T1 - Subwavelength plastic fiber for terahertz wave guiding
AU - Sun, Chi Kuang
AU - Chen, Li Jin
AU - Chen, Hung Wen
AU - Lu, Ja-Yu
PY - 2006/12/1
Y1 - 2006/12/1
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.
UR - http://www.scopus.com/inward/record.url?scp=33846206417&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33846206417&partnerID=8YFLogxK
U2 - 10.1117/12.687350
DO - 10.1117/12.687350
M3 - Conference contribution
AN - SCOPUS:33846206417
SN - 0819464716
SN - 9780819464712
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Terahertz Physics, Devices, and Systems
T2 - Terahertz Physics, Devices, and Systems
Y2 - 2 October 2006 through 4 October 2006
ER -