Abstract

A terahertz-scale two-dimensional photonic-crystal waveguide based on a silicon-on-insulator was fabricated, and the optical transmission spectrum was measured. Terahertz beam propagation characteristics were observed using a thermal imaging camera, with incident light in the 10.1–10.7 µm range. The measured transmission spectrum was in good agreement with a three-dimensional finite-difference time-domain calculation

© 2004 Optical Society of America

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References

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    [CrossRef]
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    [CrossRef]
  6. Andreani, L.C., "Photonic bands and radiation losses in photonic crystal waveguide," Physica Status Solidi B-Basic Research 234, 139-146 (2002).
    [CrossRef]
  7. Arentoft, J., et al., "Low-loss silicon-on-insulator photonic crystal waveguides," Electron. Lett. 38, 274-275 (2002).
    [CrossRef]
  8. Jukam, N. and M.S. Sherwin, "Two-dimensional terahertz photonic crystals fabricated by deep reactive ion etching in Si," Appl. Phys. Lett. 83, 21-23 (2003).
    [CrossRef]
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    [CrossRef]

Appl. Phys. Lett. (2)

Kohler, R., "High-performence continous-wave operation of superlattice terahertz quantum-cascade laser," Appl. Phys. Lett. 82, 1518-1520 (2003).
[CrossRef]

Jukam, N. and M.S. Sherwin, "Two-dimensional terahertz photonic crystals fabricated by deep reactive ion etching in Si," Appl. Phys. Lett. 83, 21-23 (2003).
[CrossRef]

Electron. Lett. (1)

Arentoft, J., et al., "Low-loss silicon-on-insulator photonic crystal waveguides," Electron. Lett. 38, 274-275 (2002).
[CrossRef]

IEEE Transactions on microwave theory (1)

Siegel, P.H., "Terahertz Technology," IEEE Transactions on microwave theory and techniques 50, 910-928 (2002).
[CrossRef]

J. Computational Phys. (1)

Berenger, J.P.," A perfectly matched layer for the absortion of electromagnetic waves," J. Computational Phys. 114, 185-200 (1994).
[CrossRef]

J. of Biol. Phys. (1)

T.Baras, "On-Chip Detection of Biometerials: A Numerical Study," J. of Biol. Phys. 29, 187-194 (2003).
[CrossRef]

Journal of Microlithography (1)

Venkataraman, S.et al., " Fabrication of high fill-factor photonic crystal devices on silicon-on-insulator substrates", Journal of Microlithography, Microfabrication and Microsystems 2, 248-254 (2003).
[CrossRef]

Opt. Lett. (2)

Phys. Rev. B (1)

M.Bayindir, B.T., and E.Ozbay, "Propagation of photons by hopping: A waveguiding mechanism through localized coupled-cavities in three-dimensional photonic crystal," Phys. Rev. B 61, R11855-R11858 (2000).
[CrossRef]

Physica Status Solidi B-Basic Research (1)

Andreani, L.C., "Photonic bands and radiation losses in photonic crystal waveguide," Physica Status Solidi B-Basic Research 234, 139-146 (2002).
[CrossRef]

Other (2)

Zant, P.P.V., "Microchip Fabrication", 251-252 (New York: McGraw-Hill Publishing Company, 1990).

Joannopoulos, J.D., R.D. Meade, and J.N. Winn, "Photonic Crystals: Molding the Flow of Light," (Princeton,N.J., Princeton University Press,1995).

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Figures (6)

Fig. 1.
Fig. 1.

(Left) SEM picture of PhC waveguide, the total length of it is 120µm, and the width of it is 100µm. (right) SEM pictures of side view and top view of the PhC Waveguide, the thickness of it is 9.49 µm, the lattice constant a=3.89 µm, and the hole diameter is 2.95 µm.

Fig. 2.
Fig. 2.

EPWM calculated dispersion diagram of the line-defect PhC waveguide, which was formed by deleting one row of air-holes along the ΓK direction. The yellow stripe was the bandgap of the PhC. The arrow in the right of the diagram indicated the position of ministop band, which was resulted from the two intercrossing modes.

Fig. 3.
Fig. 3.

2D- FDTD steady state results of 10.6 µm wave propagates in the THz PhC waveguide device, right picture is the zoom field of the wave propagates in the PhC waveguide.

Fig. 4.
Fig. 4.

Schematic layout of the optical setup for measuring transmittance spectra and optical propagation.

Fig 5.
Fig 5.

Image acquired by thermal imager, (left upper) upper view of the output facet, (right upper) topview of the output facet, (lower left) top view of the input facet, (lower right) top view of the 2D-PhC waveguide.

Fig. 6.
Fig. 6.

3D-FDTD calculated and experimental measured transmittance spectra of 2D-PhC waveguide.

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