Characterization of subwavelength plastic fiber utilizing terahertz time-domain spectroscopy

Borwen You; Tze-An Liu; Jin-Long Peng; Ci-Ling Pan; Ja-Yu Lu

doi:10.1117/12.808933

9 February 2009 Characterization of subwavelength plastic fiber utilizing terahertz time-domain spectroscopy

Borwen You, Tze-An Liu, Jin-Long Peng, Ci-Ling Pan, Ja-Yu Lu

Proceedings Volume 7215, Terahertz Technology and Applications II; 72150B (2009) https://doi.org/10.1117/12.808933
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

We present the first characterization of a simple subwavelength-diameter plastic wire by using wideband terahertz timedomain spectroscopy. The propagation characteristics including waveguide dispersion, group velocity, and attenuation constant of various plastic wires with different diameters and refractive indices are studied. The experimental results show the subwavelength plastic wire has extremely low waveguide dispersion and low attenuation constant (<0.01cm^-1) at its THz transmission band due to much reduced fractional power delivered inside the lossy core, which is consistent with the theoretical calculations. With the large evanescent-fields, the subwavelength plastic wire has capability to integrate with micro-fluid channel for sensitive bio-sensing applications.

Citation Download Citation

Borwen You, Tze-An Liu, Jin-Long Peng, Ci-Ling Pan, and Ja-Yu Lu "Characterization of subwavelength plastic fiber utilizing terahertz time-domain spectroscopy", Proc. SPIE 7215, Terahertz Technology and Applications II, 72150B (9 February 2009); https://doi.org/10.1117/12.808933

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