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Themistos, C.; Kalli, K.; Komodromos, M.; Rahman, B. M.; Grattan, K. T. V. (2012)
Languages: English
Types: Unknown
Subjects: TK

Classified by OpenAIRE into

arxiv: Physics::Optics
The terahertz (THz) frequency region of the electromagnetic spectrum is located between the traditional microwave spectrum and the optical frequencies, and offers a significant scientific and technological potential in many fields, such as in sensing, in imaging and in spectroscopy. Waveguiding in this intermediate spectral region is a major challenge. Amongst the various THz waveguides suggested, metal-clad plasmonic waveguides and specifically hollow core structures, coated with insulating material are the most promising low-loss waveguides used in both active and passive devices. Optical power splitters are important components in the design of optoelectronic systems and optical communication networks such as Mach-Zehnder Interferometric switches, polarization splitter and polarization scramblers. Several designs for the implementation of the 3dB power splitters have been proposed in the past, such as the directional coupler-based approach, the Y-junction-based devices and the MMI-based approach. In the present paper a novel MMI-based 3dB THz wave splitter is implemented using Gold/polystyrene (PS) coated hollow glass rectangular waveguides. The H-field FEM based full-vector formulation is used here to calculate the complex propagation characteristics of the waveguide structure and the finite element beam propagation method (FE-BPM) and finite difference time domain (FDTD) approach to demonstrate the performance of the proposed 3dB splitter.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] P. H. Siegel, "Terahertz technology," Microwave Theory and Techniques, IEEE Transactions on, 50(3), 910- 928 (2002).
    • [2] O. Mitrofanov, R. James, F. A. Fernandez et al., "Reducing Transmission Losses in Hollow THz Waveguides," Terahertz Science and Technology, IEEE Transactions on, 1(1), 124-132 (2011).
    • [3] C. Themistos, B. M. A. Rahman, M. Rajarajan et al., "Characterization of Silver/Polystyrene (PS)-Coated Hollow Glass Waveguides at THz Frequency," Lightwave Technology, Journal of, 25(9), 2456-2462 (2007).
    • [4] B. M. A. Rahman, A. Quadir, H. Tanvir et al., "Characterization of Plasmonic Modes in a Low-Loss DielectricCoated Hollow Core Rectangular Waveguide at Terahertz Frequency," Photonics Journal, IEEE, 3(6), 1054- 1066 (2011).
    • [5] J. Cunningham, M. Byrne, P. Upadhya et al., "Terahertz evanescent field microscopy of dielectric materials using on-chip waveguides," Applied Physics Letters, 92(3), 032903-3 (2008).
    • [6] T. Trung Le, and L. W. Cahill, "The modeling of MMI structures for signal processing applications," Proc. SPIE, 6896, 68961G-7 (2008).
    • [7] L. B. Soldano, and E. C. M. Pennings, "Optical multi-mode interference devices based on self-imaging: principles and applications," Lightwave Technology, Journal of, 13(4), 615-627 (1995).
    • [8] T. Rasmussen, J. K. Rasmussen, and J. H. Povlsen, "Design and performance evaluation of 1-by-64 multimode interference power splitter for optical communications," Lightwave Technology, Journal of, 13(10), 2069-2074 (1995).
    • [9] M. R. Amersfoort, J. B. D. Soole, H. P. LeBlanc et al., "Passband broadening of integrated arrayed waveguide filters using multimode interference couplers," Electronics Letters, 32(5), 449 (1996).
    • [10] C. G. P. Herben, C. G. M. Vreeburg, X. J. M. Leijtens et al., "Chirping of an MMI-PHASAR demultiplexer for application in multiwavelength lasers," Photonics Technology Letters, IEEE, 9(8), 1116-1118 (1997).
    • [11] N. Yoshimoto, Y. Shibata, S. Oku et al., "High-input-power saturation properties of a polarization-insensitive semiconductor Mach-Zehnder interferometer gate switch for WDM applications," Photonics Technology Letters, IEEE, 10(4), 531-533 (1998).
    • [12] C. Themistos, M. Rajarajan, B. M. A. Rahman et al., "Rigorous Comparison of Parabolically Tapered and Conventional Multimode-Interference-Based 3-dB Power Splitters in InGaAsP/InP Waveguides," Appl. Opt., 43(27), 5228-5235 (2004).
    • [13] C. Themistos, and B. M. A. Rahman, "Design issues of a multimode interference-based 3-dB splitter," Appl. Opt., 41(33), 7037-7044 (2002).
    • [14] B. Rahman, and J. Davies, "Finite-element solution of integrated optical waveguides," Lightwave Technology, Journal of, 2(5), 682-688 (1984).
    • [15] C. Themistos, B. M. A. Rahman, and K. T. V. Grattan, "Finite element analysis for lossy optical waveguides by using perturbation techniques," Photonics Technology Letters, IEEE, 6(4), 537-539 (1994).
    • [16] B. M. A. Rahman, and J. B. Davies, "Penalty Function Improvement of Waveguide Solution by Finite Elements," Microwave Theory and Techniques, IEEE Transactions on, 32(8), 922-928 (1984).
    • [17] S. Obayya, [Assessment of the Full-Vectorial Beam Propagation Method] John Wiley & Sons, Ltd, (2010).
    • [18] J.-P. Berenger, "A perfectly matched layer for the absorption of electromagnetic waves," J. Comput. Phys., 114(2), 185-200 (1994).
    • [19] A. Taflove, and S. C. Hagness, [Computational electrodynamics : the finite-difference time-domain method] Artech House, Boston, (2005).
    • [20] Y. Kane, "Numerical solution of initial boundary value problems involving maxwell's equations in isotropic media," Antennas and Propagation, IEEE Transactions on, 14(3), 302-307 (1966).
    • [21] Oleg Mitrofanov and James A. Harrington, “Dielectric-lined cylindrical metallic THz waveguides: mode structure and dispersion”, Optics Express, 18(3), 1898-1903, (2010).
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