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Plastic fiber design for THz generation through wavelength translation

Barh, A., Varshney, R. K., Agrawal, G. P., Rahman, B. M. and Pal, B. P. (2015). Plastic fiber design for THz generation through wavelength translation. Optics Letters, 40(9), pp. 2107-2110. doi: 10.1364/OL.40.002107


We report on an all-fiber Terahertz (THz) radiation source by exploiting nonlinear parametric process in a theoretically designed microstructured-core double clad plastic fiber (MC-DCPF). The required phase-matching condition is satisfied through suitable tailoring of the fiber dispersion and nonlinear properties at the pump wavelength of a high power CO2 laser, with a CO laser of much lower power acting as a seed concomitantly. Our simulated results reveal that a THz radiation source at the frequency of ~ 3 THz could be realized with a 3-dB phase-matching band-width of 2.13 GHz in a 65 m long optimized MC-DCPF. Maximum power conversion efficiency >1% is realizable even after including the material loss.

Publication Type: Article
Additional Information: © 2015 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments: School of Mathematics, Computer Science & Engineering > Engineering
Date Deposited: 17 Jul 2015 10:28
Text - Accepted Version
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