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Meadowlark Optics - Wave Plates 6/24 LB 2024

Thin Films Sing a New Tune

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Active thin-film devices enable flexible tunable filters for telecommunications and for industrial and consumer applications such as mid-IR gas sensors.

Dr. Lawrence H. Domash, Aegis Semiconductor

The growth of wavelength division multiplexing (WDM) fiber optic networks greatly accelerated the demand for tunability in components such as optical channel monitors, add/drop data filters, lasers and receivers. As a result, virtually every type of dispersive element used in telecom — fiber Bragg gratings, microelectromechanical systems (MEMS) Fabry-Perots, waveguides, diffraction gratings — has seen the development of a tunable version. Until recently, however, thin-film interference filters, the most flexible and widely deployed spectral filters, have not had a tunable counterpart...Read full article

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    Published: November 2004
    Glossary
    wavelength division multiplexing
    A system that allows the transmission of more than one signal over a common path, by assigning each signal a different frequency band. Also known as frequency division multiplexing.
    CommunicationsConsumerenergyFeaturesFiber Optic Networksindustrialoptical channel monitorsSensors & Detectorswavelength division multiplexing

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