Ultrafast commercial photodiodes have been incorporated into mm-wave waveguide mounts. A method of rapidly characterizing the frequency response of these photomixers using spontaneous-spontaneous beating of light from an erbium doped fibre amplifier (EDFA) is described. The combination of photomixer and EDFA forms a bright, single mode, continuum source suitable for spectroscopy. Results show that the available power is significantly greater than that from a mercury arc lamp. A new photomixer design, featuring a combined probe and filter structure, impedance matched over the W-band to both the coplanar output line on the photodiode chip and to reduced height milled waveguide, is also presented.


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    Titel :

    Application of 1.55 /spl mu/m photomixers as local oscillators & noise sources at millimetre wavelengths


    Beteiligte:
    Huggard, P.G. (Autor:in) / Azcona, L. (Autor:in) / Ellison, B.N. (Autor:in) / Shen, P. (Autor:in) / Gomes, N.J. (Autor:in) / Davies, P.A. (Autor:in)


    Erscheinungsdatum :

    01.01.2004


    Format / Umfang :

    198202 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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