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Microwave plasmonic mixer in a transparent fibre–wireless link

An Author Correction to this article was published on 07 November 2018

This article has been updated

Abstract

To cope with the high bandwidth requirements of wireless applications1, carrier frequencies are shifting towards the millimetre-wave and terahertz bands2,3,4,5. Conversely, data is normally transported to remote wireless antennas by optical fibres. Therefore, full transparency and flexibility to switch between optical and wireless domains would be desirable6,7. Here, we demonstrate a direct wireless-to-optical receiver in a transparent optical link. We successfully transmit 20 and 10 Gbit s−1 over wireless distances of 1 and 5 m, respectively, at a carrier frequency of 60 GHz. Key to the breakthrough is a plasmonic mixer directly mapping the wireless information onto optical signals. The plasmonic scheme with its subwavelength feature and pronounced field confinement provides a built-in field enhancement of up to 90,000 over the incident field in an ultra-compact and complementary metal-oxide–semiconductor compatible structure. The plasmonic mixer is not limited by electronic speed and thus compatible with future terahertz technologies.

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Fig. 1: Prospective application scenario for a point-to-point high-capacity fibre–wireless link.
Fig. 2: Device structure and performance.
Fig. 3: Fibre-to-wireless and wireless-to-fibre link experiment.
Fig. 4: Experimental results.

Data availability

The data that support the plots within this paper and other findings of this study are available from the corresponding author upon reasonable request.

Change history

  • 07 November 2018

    In the version of this Letter originally published online, the ORCID number, 0000-0002-8900-3237, of the author A. Josten was missing; and in Fig. 2b, in the y axis label, ‘×105’should have been ‘×103’. These errors have now been corrected in all versions.

References

  1. Waterhouse, R. & Novak, D. Realizing 5G: microwave photonics for 5G mobile wireless systems. IEEE Microw. Mag. 16, 84–92 (2015).

    Article  Google Scholar 

  2. Capmany, J. & Novak, D. Microwave photonics combines two worlds. Nat. Photon. 1, 319–330 (2007).

    Article  ADS  Google Scholar 

  3. Yao, J. Microwave photonics. J. Lightw. Technol. 27, 314–335 (2009).

    Article  ADS  Google Scholar 

  4. Nagatsuma, T., Ducournau, G. & Renaud, C. C. Advances in terahertz communications accelerated by photonics. Nat. Photon. 10, 371–379 (2016).

    Article  ADS  Google Scholar 

  5. Seeds, A. J., Shams, H., Fice, M. J. & Renaud, C. C. Terahertz photonics for wireless communications. J. Lightw. Technol. 33, 579–587 (2015).

    Article  ADS  Google Scholar 

  6. Lim, C. et al. Fiber-wireless networks and subsystem technologies. J. Lightw. Technol. 28, 390–405 (2010).

    Article  ADS  Google Scholar 

  7. Shams, H. & Seeds, A. Photonics, fiber and THz wireless communication. Opt. Photon. News 28, 24–31 (2017).

    Article  ADS  Google Scholar 

  8. Koenig, S. et al. Wireless sub-THz communication system with high data rate. Nat. Photon. 7, 977–981 (2013).

    Article  ADS  Google Scholar 

  9. Ducournau, G. et al. Ultrawide-bandwidth single-channel 0.4-THz wireless link combining broadband quasi-optic photomixer and coherent detection. IEEE Trans. Terahertz Sci. Technol. 4, 328–337 (2014).

    Article  ADS  Google Scholar 

  10. Yu, X. et al. 400-GHz wireless transmission of 60-Gb/s Nyquist-QPSK signals using UTC-PD and heterodyne mixer. IEEE Trans. Terahertz Sci. Technol. 6, 765–770 (2016).

    Article  ADS  Google Scholar 

  11. Ito, H., Nakajima, F., Furuta, T. & Ishibashi, T. Continuous THz-wave generation using antenna-integrated uni-travelling-carrier photodiodes. Semicond. Sci. Technol. 20, S191 (2005).

    Article  ADS  Google Scholar 

  12. Yardimci, N. T., Cakmakyapan, S., Hemmati, S. & Jarrahi, M. A high-power broadband terahertz source enabled by three-dimensional light confinement in a plasmonic nanocavity. Sci. Rep. 7, 4166 (2017).

    Article  ADS  Google Scholar 

  13. Renaud, C. C. et al. Antenna integrated THz uni-traveling carrier photodiodes. IEEE J. Sel. Top. Quantum Electron. 24, 1–11 (2018).

    Article  Google Scholar 

  14. Li, X., Yu, J., Xiao, J. & Xu, Y. Fiber-wireless-fiber link for 128-Gb/s PDM-16QAM signal transmission at W-band. IEEE Photon. Technol. Lett. 26, 1948–1951 (2014).

    Article  ADS  Google Scholar 

  15. Marpaung, D. et al. Integrated microwave photonics. Laser Photon. Rev. 7, 506–538 (2013).

    Article  ADS  Google Scholar 

  16. Yang, C., Li, X., Xiao, J., Chi, N. & Yu, J. Fiber‐wireless integration for 80 Gbps polarization division multiplexing—16QAM signal transmission at W‐band without RF down conversion. Microw. Opt. Technol. Lett 57, 9–13 (2015).

    Article  Google Scholar 

  17. Wijayanto, Y. N., Murata, H. & Okamura, Y. Electrooptic millimeter-wave-lightwave signal converters suspended to gap-embedded patch antennas on low-k dielectric materials. IEEE J. Sel. Top. Quantum Electron. 19, 33–41 (2013).

    Article  ADS  Google Scholar 

  18. Zhang, X. et al. Integrated photonic electromagnetic field sensor based on broadband bowtie antenna coupled silicon organic hybrid modulator. J. Lightw. Technol. 32, 3774–3784 (2014).

    Article  ADS  Google Scholar 

  19. Park, D. et al. RF photonic downconversion of vector modulated signals based on a millimeter-wave coupled electrooptic nonlinear polymer phase-modulator. Opt. Express 25, 29885–29895 (2017).

    Article  ADS  Google Scholar 

  20. Chung, C. J. et al. Silicon-based hybrid integrated photonic chip for Ku band electromagnetic wave sensing. J. Lightw. Technol. 36, 1568–1575 (2018).

    Article  ADS  Google Scholar 

  21. Brongersma, M. L. & Shalaev, V. M. The case for plasmonics. Science 328, 440–441 (2010).

    Article  ADS  Google Scholar 

  22. Hoessbacher, C. et al. Plasmonic modulator with >170 GHz bandwidth demonstrated at 100 GBd NRZ. Opt. Express 25, 1762–1768 (2017).

    Article  ADS  Google Scholar 

  23. Baeuerle, B. et al. Driver-less sub 1Vpp operation of a plasmonic-organic hybrid modulator at 100 GBd NRZ. in Optical Fiber Communication Conference M2I.1 (Optical Society of America, 2018).

  24. Gramotnev, D. K. & Bozhevolnyi, S. I. Plasmonics beyond the diffraction limit. Nat. Photon. 4, 83–91 (2010).

    Article  ADS  Google Scholar 

  25. Benea-Chelmus, I.-C. et al. Three-dimensional phase modulator at telecom wavelength acting as a terahertz detector with an electro-optic bandwidth of 1.25 terahertz. ACS Photon. 5, 1398–1403 (2018).

    Article  Google Scholar 

  26. Haffner, C. et al. Plasmonic organic hybrid modulators—scaling highest speed photonics to the microscale. Proc. IEEE 104, 2362–2379 (2016).

    Article  Google Scholar 

  27. Salamin, Y. et al. Direct conversion of free space millimeter waves to optical domain by plasmonic modulator antenna. Nano. Lett. 15, 8342–8346 (2015).

    Article  ADS  Google Scholar 

  28. Pile, D. F. P. et al. Two-dimensionally localized modes of a nanoscale gap plasmon waveguide. Appl. Phys. Lett. 87, 261114 (2005).

    Article  ADS  Google Scholar 

  29. Elder, D. L. et al. Effect of rigid bridge-protection units, quadrupolar interactions, and blending in organic electro-optic chromophores. Chem. Mater. 29, 6457–6471 (2017).

    Article  Google Scholar 

  30. Woo, I., Nguyen, T. K., Han, H., Lim, H. & Park, I. Four-leaf-clover-shaped antenna for a THz photomixer. Opt. Express 18, 18532–18542 (2010).

    Article  ADS  Google Scholar 

  31. Heni, W. et al. Nonlinearities of organic electro-optic materials in nanoscale slots and implications for the optimum modulator design. Opt. Express 25, 2627–2653 (2017).

    Article  ADS  Google Scholar 

  32. Mokhtari-Koushyar, F. et al. Wideband multi-arm bowtie antenna for millimeter wave electro-optic sensors and receivers. J. Lightw. Technol. 36, 3418–3426 (2018).

    Article  ADS  Google Scholar 

  33. Chang, F., Onohara, K. & Mizuochi, T. Forward error correction for 100 G transport networks. IEEE Commun. Mag. 48, S48–S55 (2010).

    Article  Google Scholar 

  34. Kallfass, I. et al. 64 Gbit/s transmission over 850 m fixed wireless link at 240 GHz carrier frequency. J. Infrared Millim. Terahertz Waves 36, 221–233 (2015).

    Article  Google Scholar 

  35. Vermeulen, D. et al. High-efficiency fiber-to-chip grating couplers realized using an advanced CMOS-compatible silicon-on-insulator platform. Opt. Express 18, 18278–18283 (2010).

    Article  ADS  Google Scholar 

  36. Haffner, C. et al. Low-loss plasmon-assisted electro-optic modulator. Nature 556, 483–486 (2018).

    Article  ADS  Google Scholar 

  37. Ummethala, S. et al. Terahertz-to-optical conversion using a plasmonic modulator. in Conference on Lasers and Electro-Optics STu3D.4 (Optical Society of America, 2018).

  38. Jia, S. et al. 120 Gb/s multi-channel THz wireless transmission and THz receiver performance analysis. IEEE Photon. Technol. Lett. 29, 310–313 (2017).

    Article  ADS  Google Scholar 

  39. Sun, J., Timurdogan, E., Yaacobi, A., Hosseini, E. S. & Watts, M. R. Large-scale nanophotonic phased array. Nature 493, 195–199 (2013).

    Article  ADS  Google Scholar 

  40. Haffner, C. et al. All-plasmonic Mach–Zehnder modulator enabling optical high-speed communication at the microscale. Nat. Photon. 9, 525–528 (2015).

    Article  ADS  Google Scholar 

  41. Tian, J., Yu, S., Yan, W. & Qiu, M. Broadband high-efficiency surface-plasmon-polariton coupler with silicon-metal interface. Appl. Phys. Lett. 95, 13504 (2009).

    Article  ADS  Google Scholar 

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Acknowledgements

This work was carried out partially at the Binnig and Rohrer Nanotechnology Center (BRNC) and in the FIRST lab cleanroom facility at ETH Zurich. We are grateful to H. R. Benedickter and U. Drechsler for the help in the measurement and fabrication, respectively. The European Union project ERC PLASILOR (670478) and PLASMOfab (688166) are acknowledged for partial funding of the work. The US National Science Foundation (DMR-1303080) and the Air Force Office of Scientific Research (FA9550-15-1-0319). The ETH Postdoctoral Fellowship (16-2-FEL-51). M.B. acknowledges the SNSF Ambizione grant (173996).

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Contributions

Y.S conceived the concept, designed and fabricated the device, designed and performed the experiments and analysed the data. B.B., F.C.A. and A.J. performed the data experiment and data analysis. W.H. fabricated the device, developed the poling process and contributed to the measurements. Y.F. fabricated the device. C.H. contributed to the design of the device and experiment. R.B. and M.B. contributed to the design of the experiment. T.W contributed to the design of the device. D.L.E. and L.R.D. developed and synthesized the HD-BB-OH/YLD124 nonlinear material. J.L. conceived the concept and supervised the project. All authors have contributed to the writing of the manuscript.

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Correspondence to Y. Salamin or J. Leuthold.

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Supplementary information

Supplementary Information

Discussion of the plasmonic phase modulator, field enhancement and experimental set-up

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Salamin, Y., Baeuerle, B., Heni, W. et al. Microwave plasmonic mixer in a transparent fibre–wireless link. Nature Photon 12, 749–753 (2018). https://doi.org/10.1038/s41566-018-0281-6

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