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Terahertz Waveguiding in Silicon-Core Fibers

Bas, Derek A. and Cushing, Scott K. and Ballato, John and Bristow, Alan D. (2013) Terahertz Waveguiding in Silicon-Core Fibers. . (Unpublished)

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We propose the use of a silicon-core optical fiber for terahertz (THz) waveguide applications. Finite-difference time-domain simulations have been performed based on a cylindrical waveguide with a silicon core and silica cladding. High-resistivity silicon has a flat dispersion over a 0.1 - 3 THz range, making it viable for propagation of tunable narrowband CW THz and possibly broadband picosecond pules of THz radiation. Simulations show the propagation dynamics and the integrated intensity, from which transverse mode profiles and absorption lengths are extraced. It is found that for 140 - 250 micron core diameters the mode is primarily confined to the core, such that the overall absorbance is only slightly less than in bulk polycrystalline silicon.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Cushing, Scott K.0000-0003-3538-2259
Additional Information:The authors wish to thank Robert R. Rice for useful discussions. DAB and SKC were supported by a Research Challenge Grant from the West Virginia Higher Education Policy Commission (HEPC.dsr.12.29) and NSF Graduate Research Fellowship (#1102689), respectively.
Funding AgencyGrant Number
West Virginia Higher Education Policy CommissionHEPC.dsr.12.29
NSF Graduate Research FellowshipDGE-1102689
Classification Code:OCIS codes: (230.7370) Optical devices, Waveguides; (300.6495) Spectroscopy, terahertz; (160.6000) Semiconductor materials; (060.2290) Fiber materials
Record Number:CaltechAUTHORS:20180627-161213458
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87426
Deposited By: George Porter
Deposited On:28 Jun 2018 15:08
Last Modified:03 Oct 2019 19:55

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