Holographic diffusers for indoor infrared communication system

M. R. Pakravan, E. Simova, M. Kavehrad

    Research output: Contribution to conferencePaperpeer-review

    13 Scopus citations


    Diffused infrared transmission is one of the preferred techniques used in indoor wireless communications. Tolerance to shadowing and a lack of alignment requirements are among the many advantages offered by this technique. However, it has its disadvantages, namely high pathloss and multipath dispersion. The limitation imposed by eye-safety requirements restricts the transmitted power. Therefore, efficient use of transmitted optical power is the key for practical broadband infrared systems. In this paper, we report on using a holographic diffuser for shaping of infrared radiation pattern in an indoor infrared transmission system. The reported measurements show that the path loss of a non-directed optical link can be reduced by employing a properly designed holographic diffuser. The results also show another advantage of using the proposed holographic diffuser which is the added tolerance (robustness) of the transmission to shadowing.

    Original languageEnglish (US)
    Number of pages5
    StatePublished - Dec 1 1996
    EventProceedings of the 1996 IEEE Communications Theory Mini-Conference. Part 4 (of 4) - London, UK
    Duration: Nov 18 1996Nov 22 1996


    OtherProceedings of the 1996 IEEE Communications Theory Mini-Conference. Part 4 (of 4)
    CityLondon, UK

    All Science Journal Classification (ASJC) codes

    • Electrical and Electronic Engineering
    • Global and Planetary Change


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