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Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
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Stokes vector direct detection for short-reach optical communication.

Di Che, An Li, Xi Chen

    Optics Letters
    |May 31, 2014
    PubMed
    Summary

    We introduce a new Stokes vector direct detection (SV-DD) method for optical communication. This technique enhances signal reception and reduces photodetection nonlinearity, achieving high spectrum efficiency over long distances.

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    Area of Science:

    • Optical communication systems
    • Photonics and optoelectronics
    • Signal processing in optical networks

    Background:

    • Photodetection nonlinearity and phase diversity are critical challenges in high-speed optical communication.
    • Existing direct detection schemes often struggle with signal quality degradation over long fiber transmissions.

    Purpose of the Study:

    • To propose and validate a novel Stokes vector direct detection (SV-DD) scheme.
    • To simultaneously address receiver phase diversity and photodetection nonlinearity.
    • To improve the performance of optical communication systems.

    Main Methods:

    • Implementation of the Stokes vector direct detection (SV-DD) scheme.
    • Transmission of a single-polarization modulated signal.
    • Utilizing standard single-mode fiber (SSMF) for signal propagation.

    Main Results:

    • Successful reception of an 80 Gb/s SV-DD signal after 160 km SSMF transmission.
    • Achieved an electrical spectrum efficiency of 11.64 bit/s/Hz.
    • Demonstrated the effectiveness of SV-DD in mitigating nonlinearity and phase issues.

    Conclusions:

    • The proposed SV-DD scheme offers a viable solution for high-speed, long-haul optical communication.
    • This method simultaneously enhances receiver phase diversity and cancels photodetection nonlinearity.
    • The achieved spectrum efficiency highlights the potential of SV-DD for future optical networks.