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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Published on: March 20, 2017

Color separation by use of binary optics.

M W Farn, M B Stern, W B Veldkamp

    Optics Letters
    |October 14, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a micro-optic array with microlenses and gratings to separate colors on a focal plane. This silicon-based device operates in the 8-12 micrometer band for advanced optical applications.

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    08:19

    Patterning via Optical Saturable Transitions - Fabrication and Characterization

    Published on: December 11, 2014

    Area of Science:

    • Optics and Photonics
    • Microfabrication
    • Infrared Technology

    Background:

    • Color separation is crucial for various optical sensing and imaging applications.
    • Existing methods for spectral dispersion can be bulky or complex.
    • Micro-optics offer miniaturization potential for integrated optical systems.

    Purpose of the Study:

    • To design, fabricate, and demonstrate a novel micro-optic array for local color separation.
    • To integrate refractive microlenses and gratings for simultaneous concentration and spectral dispersion.
    • To enable wavelength-selective detection on a focal plane.

    Main Methods:

    • Designed a 64x64 array of 100x100 micrometer F/2 refractive microlenses with a 17-micrometer period grating.
    • Utilized a nonstandard binary-optics process for fabrication on a silicon wafer.
    • Achieved a minimum feature size of 1 micrometer and a total depth of 8 micrometers.

    Main Results:

    • Successfully fabricated the micro-optic array with integrated microlenses and gratings.
    • Demonstrated the capability of the array to concentrate radiation using microlenses.
    • Showcased the grating's function in dispersing radiation by wavelength.

    Conclusions:

    • The developed micro-optic array effectively separates colors locally on the focal plane.
    • The device is suitable for the 8-12 micrometer infrared band.
    • This technology provides a compact solution for spectral analysis in miniaturized optical systems.