Scalable, Rapidly Tunable Wavelength Selective Ring Resonator

Introduction Wavelength-division multiplexing (WDM) is a capacity increasing technology used in fiber-optic communications to carry different optical signals in a single optical fiber. Optical add-drop multiplexers are required at either end of a fiber for WDM. Current technologies switch too slowly, only switch over a limited wavelength range, are not compatible with silicon processing, do not scale well (both by number of fibers and wavelengths), and have other problems limiting their usefulness for WDM. Technology description Researchers at the University of Washington and Boeing have developed methods to multiplex optical signals that overcome the problems listed above associated with the traditional methods. Business opportunity These wavelength selective devices are useful for electro-optic modulators, rapidly reconfigurable WDM and dense-WDM transmitters, and optical packet switch based networks. Stage of development Working prototypes of these wavelength selective devices are available for demonstration. Intellectual property position US Patents on this technology are pending.

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