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Integrated photonic MEMS switch for visible light.

Alperen Govdeli, Hong Chen, Saeed S Azadeh

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    Summary
    This summary is machine-generated.

    Researchers developed a low-power visible-light optical switch using MEMS technology. This breakthrough enables new applications in quantum computing and biophotonics by overcoming limitations of conventional silicon photonics.

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    Area of Science:

    • Integrated photonics
    • Visible-light devices
    • Microelectromechanical systems (MEMS)

    Background:

    • Conventional silicon photonics are limited to C- and O-bands, restricting applications in areas like quantum experiments and biophotonics.
    • Developing low-power, integrated visible-light switches and phase shifters is a significant challenge for advanced photonic systems.

    Purpose of the Study:

    • To demonstrate a monolithically integrated, electrostatic MEMS-actuated Mach-Zehnder interferometer optical switch operating in the visible spectrum.
    • To address the need for efficient and low-power switching components for visible-light integrated photonics.

    Main Methods:

    • Fabrication of a Mach-Zehnder interferometer using MEMS technology for electrostatic actuation.
    • Characterization of the optical switch performance at a wavelength of 540 nm, including extinction ratio, optical loss, and switching speeds.

    Main Results:

    • The optical switch achieved an extinction ratio of 7.2 dB and an optical loss of 2.5 dB at 540 nm.
    • Measured 10-90% rise and fall times were 5 µs and 28 µs, respectively.
    • Achieved very low static power dissipation (~0.5 nW) and dynamic power dissipation (< 70 µW at 30 kHz).

    Conclusions:

    • The demonstrated MEMS-actuated Mach-Zehnder interferometer is a viable solution for low-power, integrated visible-light optical switching.
    • This technology opens possibilities for advanced applications in quantum technologies, biophotonics, and displays requiring visible-light integrated photonics.