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Reconfigurable optical interleaver modules with tunable wavelength transfer matrix function using polymer photonics

Changming Chen, Xiaoyan Niu, Chao Han

    Optics Express
    |October 17, 2014
    PubMed
    Summary

    This study presents a novel optical interleaver module for DWDM systems. The device integrates wavelength selectors, variable optical attenuators, and switches on a single chip, enabling reconfigurable optical routing.

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Materials Science

    Background:

    • Dense Wavelength Division Multiplexing (DWDM) systems require efficient optical routing components.
    • Existing optical interleaving modules face limitations in reconfigurability and integration.

    Purpose of the Study:

    • To design and fabricate a novel, transparent, reconfigurable optical interleaver module.
    • To integrate multiple optical functions onto a single photonic chip for enhanced performance.

    Main Methods:

    • Utilized polymer photonic lightwave circuits for monolithic integration.
    • Synthesized highly fluorinated photopolymer and organic-inorganic hybrid materials for waveguide core and cladding.
    • Incorporated Arrayed Waveguide Gratings (AWGs), Multimode Interference (MMI) Variable Optical Attenuators (VOAs), and Mach-Zehnder Interferometer (MZI) switch arrays.

    Main Results:

    • Achieved a thermo-optic (TO) tunable wavelength transfer matrix (WTM) function for optical routing.
    • Demonstrated a low one-chip transmission loss of ~6 dB and crosstalk < ~25 dB for TM mode.
    • Measured MMI VOA crosstalk of -15.2 dB and extinction ratio of 17.5 dB.
    • Obtained a TO switch modulation depth of ~18.2 dB.

    Conclusions:

    • The developed optical interleaver module offers a reconfigurable wavelength transfer matrix function.
    • The integrated design shows promising performance for DWDM optical communication systems.
    • The use of advanced polymer materials enables efficient monolithic integration of optical components.