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Ultra-broadband Ka to W-band 1.55 µm travelling-wave photomixer

Ultra-broadband Ka to W-band 1.55 µm travelling-wave photomixer

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Millimetre-wave generation by optical heterodyning in a 1.55 µm fibre-coupled travelling-wave (TW) photomixer has been demonstrated. The InP-based TW photomixer exhibits a DC responsivity of 0.43 A/W and a breakdown voltage in excess of 13 V. Ultra-broadband operation from 26 to 110 GHz was demonstrated with a record electrical output power of –21.5 dBm at 110 GHz.

References

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      • Chau, T., Kaneda, N., Jung, T., Rollinger, A., Mathai, S., Qian, Y., Itoh, T., Wu, M.C., Shillue, B., Payne, J., Emerson, D.: `High speed velocity matched distributed photodetectors', IEEE LEOS'99 Conf Proc., 1999, p. 834–835.
    2. 2)
      • Payne, J., Shillue, B., Vaccari, A.: `Photonic techniques for use on the Atacama large millimeter array', Proc. Int. Top. Meeting on Microwave Photonics, 1999, Melbourne, p. 105–108.
    3. 3)
      • Alles, M., Auer, U., Teude, F.-J., Jäger, D.: `Distributed velocity matched 1.55 µm InP traveling-wave photodetectorfor generation of high millimeterwave signal power', IEEE MTT-S Dig., 1998, Baltimore, p. 1233–1236.
    4. 4)
      • E.R. Brown , K.A. McIntosh , K.B. Nichols , C.L. Dennis . Photomixing up to 3.8 THz in low-temperature-grown GaAs. Appl. Phys. Lett. , 3 , 285 - 287
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