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    This summary is machine-generated.

    This study introduces a novel liquid crystal on silicon (LCoS)-based programmable spectral processor for advanced polarization control. The device enables precise manipulation of light

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Materials Science

    Background:

    • State of polarization (SOP) manipulation is crucial for optical signal processing.
    • Existing methods for spectral and spatial SOP control are often complex or limited.
    • Liquid Crystal on Silicon (LCoS) technology offers potential for dynamic optical control.

    Purpose of the Study:

    • To experimentally demonstrate a novel LCoS-based programmable spectral processor.
    • To achieve simultaneous spatial and spectral manipulation of the state of polarization (SOP).
    • To enable tunable filtering and adjustable central wavelengths with high resolution.

    Main Methods:

    • Utilized two cascaded photonic configurations based on LCoS technology.
    • Employed a 1D-LCoS for polarization manipulation along the dispersion direction.
    • Integrated a broadband linear polarizer for wavelength filtering.

    Main Results:

    • Achieved an intensity modulation depth of 46.4 dB.
    • Demonstrated polarization-dependent loss (PDL) of less than 1 dB.
    • Obtained arbitrary power spectral distribution with approximately 40 dB channel isolation.
    • Verified adjustable central wavelength and tunable filtering with a resolution of 0.08 nm.

    Conclusions:

    • The proposed LCoS-based spectral processor effectively manipulates SOP in both spatial and spectral domains.
    • The system offers high performance in terms of modulation depth, PDL, and channel isolation.
    • The demonstrated tunability and resolution pave the way for advanced optical signal processing applications.