Subwavelength plastic wire terahertz time-domain spectroscopy

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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

This work demonstrates the feasibility of a terahertz time-domain spectrometer based on a subwavelength-diameter plastic wire (SPW) for sensing applications. The dispersion property of the SPW is experimentally and theoretically studied. The SPW exhibits a low and controllable waveguide dispersion, which can be engineered by changing the core diameter, the core index, and the cladding index of the wire. Two white powders, tryptophan and polyethylene, deposited on the bottom of the wire can be successfully distinguished based on the waveguide dispersion of SPW. The SPW would be a promising candidate for combination with biochips for sensing minute molecules.

Original languageEnglish
Article number051105
JournalApplied Physics Letters
Volume96
Issue number5
DOIs
Publication statusPublished - 2010

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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