OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 5 — May. 1, 2007
  • pp: 1230–1235

Flexible terahertz fiber optics with low bend-induced losses

Takahiro Ito, Yuji Matsuura, Mitsunobu Miyagi, Hiroaki Minamide, and Hiromasa Ito  »View Author Affiliations


JOSA B, Vol. 24, Issue 5, pp. 1230-1235 (2007)
http://dx.doi.org/10.1364/JOSAB.24.001230


View Full Text Article

Enhanced HTML    Acrobat PDF (338 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We developed a metal hollow waveguide as a flexible delivery medium of terahertz waves. Theoretical evaluation shows that a metal waveguide mainly supports TE modes and that the TE 11 mode shows a high coupling coefficient to linearly polarized light. Also the TE 11 mode brings less mode conversion to high-order modes than the TE 01 mode giving the lowest loss. We measured transmission losses in the terahertz region of hollow waveguides with inner silver coating; the losses were 7.5 8 dB m at the wavelengths from 190 250 μ m for waveguides with an inner diameter of 1 mm . These losses coincide well with theoretical ones, and this shows that in these waveguides, the TE 11 mode is dominant when a linearly polarized beam is launched into them. The waveguides are flexible because we use a thin-wall glass capillary as the base tubing. Our experiment revealed low additional losses due to bending even when complicated bends were applied to the waveguides. The metal-coated hollow fiber with an inner diameter of 1 mm is sufficiently small and flexible for use in endoscopic applications.

© 2007 Optical Society of America

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2310) Fiber optics and optical communications : Fiber optics
(350.4010) Other areas of optics : Microwaves

ToC Category:
THz Domain

History
Original Manuscript: November 10, 2006
Revised Manuscript: December 14, 2006
Manuscript Accepted: December 29, 2006
Published: April 17, 2007

Virtual Issues
Vol. 2, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Takahiro Ito, Yuji Matsuura, Mitsunobu Miyagi, Hiroaki Minamide, and Hiromasa Ito, "Flexible terahertz fiber optics with low bend-induced losses," J. Opt. Soc. Am. B 24, 1230-1235 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-5-1230


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. S. P. Jamison, R. W. McGowan, and D. Grischkowsky, 'Single-mode waveguide propagation and reshaping of sub-ps terahertz pulse in sapphire fibers,' Appl. Phys. Lett. 76, 1987-1989 (2000). [CrossRef]
  2. H. Han, H. Park, M. Cho, and J. Kim, 'Terahertz pulse propagation in a plastic photonic crystal fiber,' Appl. Phys. Lett. 80, 2634-2636 (2002). [CrossRef]
  3. M. Goto, A. Quema, H. Takahashi, S. Ono, and N. Sarukura, 'Teflon photonic crystal fiber as terahertz waveguides,' Jpn. J. Appl. Phys., Part 2 43, L317-L319 (2004). [CrossRef]
  4. K. Wang and D. M. Mittleman, 'Metal wires for terahertz waveguiding,' Nature 432, 376-379 (2004). [CrossRef] [PubMed]
  5. K. Wang and D. M. Mittleman, 'Guided propagation of terahertz pulses on metal wires,' J. Opt. Soc. Am. B 22, 2001-2008 (2005). [CrossRef]
  6. J. A. Deibel, K. Wang, M. D. Escarra, and D. M. Mittleman, 'Enhanced coupling of terahertz radiation to cylindrical wire waveguides,' Opt. Express 14, 279-289 (2006). [CrossRef] [PubMed]
  7. R. W. McGowan, G. Gallot, and D. Grischkowsky, 'Propagation of ultrawideband short pulses of terahertz radiation through submillimeter-diameter circular waveguides,' Opt. Lett. 24, 1431-1433 (1999). [CrossRef]
  8. G. Gallot, S. P. Jamison, R. W. McGowan, and D. Grischkowsky, 'Terahertz waveguides,' J. Opt. Soc. Am. B 17, 851-863 (2000). [CrossRef]
  9. T. Hidaka, H. Minamide, H. Ito, S. Maeta, and T. Akiyama, 'Ferroelectric PVDF cladding terahertz waveguide,' in Optical Information, Data Processing and Storage, and Laser Communication Technologies J.-P. Goedgebuer, N. N. Rozanov, S. K. Turitsyn, A. S. Akhmanov, and V. Y. Panchenko, eds., Proc. SPIE 5135, 70-77 (2003). [CrossRef]
  10. T. Hidaka, H. Minamide, and H. Ito, 'Bent-angle dependency of ferroelectric PVDF cladding THz waveguides,' in Proceedings of the 11th IEEE International Conference on Terahertz Electronics (IEEE, 2003), p. 76.
  11. J. A. Harrington, R. George, P. Pedersen, and E. Mueller, 'Hollow polycarbonate waveguides with inner Cu coatings for delivery of terahertz radiation,' Opt. Express 12, 5263-5268 (2004). [CrossRef] [PubMed]
  12. M. Miyagi and S. Kawakami, 'Design theory of dielectric-coated circular metallic waveguides for infrared transmission,' J. Lightwave Technol. LT-2, 116-126 (1984). [CrossRef]
  13. M. Miyagi, 'Waveguide-loss evaluation in circular hollow waveguides and its ray-optical treatment,' J. Lightwave Technol. LT-3, 303-307 (1985). [CrossRef]
  14. M. A. Ordal, L. L. Long, R. J. Bell, S. E. Bell, R. R. Bell, R. W. Alexander, Jr., and C. A. Ward, 'Optical properties of the metals Al, Co, Cu, Au, Fe, Pb, Ni, Pd, Pt, Ag, Ti, and W in the infrared and far infrared,' Appl. Opt. 22, 1099-1119 (1983). [CrossRef] [PubMed]
  15. M. A. Ordal, R. J. Bell, R. W. Alexander, Jr., L. L. Long, and M. R. Querry, 'Optical properties of Au, Ni, and Pb at submillimeter wavelengths,' Appl. Opt. 26, 774-752 (1987). [CrossRef]
  16. M. A. Ordal, R. J. Bell, R. W. Alexander, Jr., L. A. Newquist, and M. R. Querry, 'Optical properties of Al, Fe, Ti, Ta, W, and Mo at submillimeter wavelengths,' Appl. Opt. 27, 1203-1209 (1988). [CrossRef] [PubMed]
  17. C.G.Montgomery, R.H.Dicke, and E.M.Purcell, eds., Principles of Microwave Circuits (Peter Peregrinus, 1987), Chap. 2. [CrossRef]
  18. A. W. Snyder and J. D. Love, Optical Waveguide Theory (Chapman and Hall, 1983), Chap. 27.
  19. J. A. Harrington, Infrared Fiber Optics and Their Applications (SPIE, 2004). [CrossRef]
  20. Y. Matsuura, Y. Shi, Y. Abe, M. Yaegashi, G. Takada, S. Mohri, and M. Miyagi, 'Infrared-laser delivery system based on polymer-coated hollow fibers,' Opt. Laser Technol. 33, 279-283 (2001). [CrossRef]
  21. E. D. Palik, ed., Handbook of Optical Constants of Solids (Academic, 1985).
  22. K. Kawase, J. Shikata, and H. Ito, 'Terahertz wave parametric source,' J. Phys. D 35, R1-R14 (2002). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article

OSA is a member of CrossRef.

CrossCheck Deposited