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Wavelength Tuning of MEMS VCSEL Proposed

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Breck Hitz

Engineers at the University of California, Berkeley, have designed and analyzed -- but not built -- a microelectromechanical system (MEMS) vertical-cavity surface-emitting laser (VCSEL) whose wavelength could be tuned using a unique piezoelectric actuator. Such tiny lasers could be useful for wavelength management and switching in dense wavelength division multiplexed communications systems, and for chip-based atomic clocks and medical diagnostics. A MEMS VCSEL consists of two distributed Bragg reflectors that act as the laser's mirrors, and a semiconductor gain medium composed of multiple...Read full article

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    Published: June 2005
    Basic ScienceCommunicationspiezoelectric actuatorResearch & TechnologyUniversity of California

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