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  • Volume 4, Issue 6

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    DWDM & ROADM

    Designers use multiple means to measure and manage dispersion

    June 1, 2002
    By Mark AlbertMitigating chromatic dispersion and PMD requires reliable and accurate measurement methods and solutions. Measurement methods include phase-shift modulation, polarization...
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    DWDM & ROADM

    Modelocking a tunable dual-wavelength fiber laser

    June 1, 2002
    By Yvonne Carts-PowellResearchers from McGill University (Montreal, Canada) and Aston University (Birmingham, England) recently demonstrated an actively modelocked, dual-wavelength...
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    DWDM & ROADM

    Thin-film filters give flexibilityto OADMs

    June 1, 2002
    By Scott DeMangeFiber Bragg gratings have been the technology of choice in 50-GHz optical add/drop multiplexers. Advances in deposition techniques and design have created competitive...
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    Transport

    Hybrid passive components reduce size and cost while increasing control

    June 1, 2002
    Craig Thompson, Kathryn Li Dessau, and Yonglin HuangNew long-haul and metro networks require flexible, high-performance amplifiers. Hybrid passive components and modules provide...
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    Transport

    Closed-loop circuits improve control of optical components

    June 1, 2002
    John ArdiniCircuits designed to control optical components such as MEMS switches demand a properly shaped dynamic response and the ability to reject system disturbances. The author...