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Terahertz Interferometer for Integrated Goubau-Line Waveguides

By Simon Laurette, Anthony Treizebre, Nour-Eddine Bourzgui, and Bertrand Bocquet
Progress In Electromagnetics Research Letters, Vol. 30, 49-58, 2012


An integrated Terahertz {Mach-Zehnder} interferometer is presented in order to perform differential measurements in a chip. Both simulation and experiment are performed for validating the interferometer structure. Destructive interference peaks are observed, and destructive frequencies are predicted by a mathematical model with a good agreement. The structure is then used to characterize dielectric constant of materials. Simulation results enable to quantify the device sensitivity. An experimental validation is given with the characterization of a thermosensitive polymer (Cyclotene BCB) in the sub-THz frequency band. Perspectives to increase investigated frequencies are discussed.


Simon Laurette, Anthony Treizebre, Nour-Eddine Bourzgui, and Bertrand Bocquet, "Terahertz Interferometer for Integrated Goubau-Line Waveguides," Progress In Electromagnetics Research Letters, Vol. 30, 49-58, 2012.


    1. Tonouchi, M., "Cutting-edge terahertz technology," Nature Photonics, Vol. 1, No. 2, 97-105, 2007.

    2. Siegel, P. H., "Terahertz technology in biology and medicine," IEEE Transactions on Microwave Theory and Techniques, Vol. 52, No. 10, 2438-2447, 2004.

    3. Heh, D. Y. and E. L. Tan, "Modeling the interaction of terahertz pulse with healthy skin and basal cell carcinoma using the unconditionally stable fundamental ADI-FDTD method," Progress In Electromagnetics Research B, Vol. 37, 365-386, 2012.

    4. Markelz, A. G., "Terahertz dielectric sensitivity to biomolecular structure and function," IEEE Journal of Selected Topics in Quantum Electronics, Vol. 14, No. 1, 180-190, 2008.

    5. Born, B. and M. Havenith, "Terahertz dance of proteins and sugars with water," Journal of Infrared Millimeter and Terahertz Waves, Vol. 30, No. 12, 1245-1254, Dec. 2009.

    6. Matvejev, V., C. De Tandt, W. Ranson, J. Stiens, R. Vounckx, and D. Mangelings, "Integrated waveguide structure for highly sensitive thz spectroscopy of nano-liter liquids in capillary tubes," Progress In Electromagnetics Research, Vol. 121, 89-101, 2011.

    7. Wang, K. L. and D. M. Mittleman, "Metal wires for terahertz wave guiding," Nature, Vol. 432, No. 7015, 376-379, 2004.

    8. Treizebre, A. and B. Bocquet, "Nanometric metal wire as a guide for THz investigation of living cells," International Journal of Nanotechnology, Vol. 5, No. 6--8, 784-795, 2008.

    9. Laurette, S., A. Treizebre, and B. Bocquet, "Co-integrated microfluidic and THz functions for biochip devices," Journal of Micromechanics and Microengineering, Vol. 21, No. 6, 065029, 2011.

    10. Abbas, A., A. Treizebre, P. Supiot, N. E. Bourzgui, D. Guillochon, D. Vercaigne-Marko, and B. Bocquet, "Cold plasma functionalized terahertz biomems for enzyme reaction analysis," Biosensors & Bioelectronics, Vol. 25, No. 1, 154-160, 2009.

    11. Laurette, S., A. Treizebre, F. Affouard, and B. Bocquet, "Subterahertz characterization of ethanol hydration layers by microfluidic system," Applied Physics Letters, Vol. 97, No. 11, 111904, 2010.

    12. Treizebre, A., B. Bocquet, Y. S. Xu, and R. G. Bosisio, "New THz excitation of planar Goubau line," Microwave and Optical Technology Letters, Vol. 50, No. 11, 2998-3001, 2008.

    13. Treizebre, A., M. Hofman, and B. Bocquet, "Terahertz spiral planar Goubau line rejectors for biological characterization," Progress In Electromagnetics Research M, Vol. 14, 163-176, 2010.

    14. Xu, Y., C. Nerguizian, and R. G. Bosisio, "Wideband planar Goubau line integrated circuit components at millimetre waves," IET Microwaves Antennas & Propagation, Vol. 5, No. 8, 882-885, 2011.

    15. Treizebre, A., S. Laurette, Y. Xu, R. G. Bosisio, and B. Bocquet, "THz power divider circuits on planar Goubau lines (PGLS)," Progress In Electromagnetics Research C, Vol. 26, 219-228, 2012.

    16. Dazhang, L., J. Cunningham, M. B. Byrne, S. Khanna, C. D. Wood, A. D. Burnett, S. M. Ershad, E. H. Linfield, and A. G. Davies, "On-chip terahertz Goubau-line waveguides with integrated photoconductive emitters and mode-discriminating detectors," Applied Physics Letters, Vol. 95, No. 9, 092903, 2009.

    17. Sepulveda, B., J. S. del Rio, M. Moreno, F. J. Blanco, K. Mayora, C. Dominguez, and L. M. Lechuga, "Optical biosensor microsystems based on the integration of highly sensitive machzehnder interferometer devices," Journal of Optics A: Pure and Applied Optics, Vol. 8, No. 7, S561-S566, 2006.

    18. Lapsley, M. I., I. K. Chiang, Y. B. Zheng, X. Y. Ding, X. L. Mao, and T. J. Huang, "A single-layer, planar, optofluidic Mach-Zehnder interferometer for label-free detection," Lab on A Chip, Vol. 11, No. 10, 1795-1800, 2011.

    19. CYCLOTENE Advanced Electronic Resins, Processing Procedures for CYCLOTENE 3000 Series Dry Etch Resins, DOW, 2005.

    20. Wilkinson, E. J., "An n-way hybrid power divider," IEEE Transactions on Microwave Theory and Techniques, Vol. 8, 116-118, 1960.