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Related Experiment Video

Updated: Jun 22, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

High reflectivity superstructured FBG for coherent optical code generation and recognition.

Xu Wang, Koji Matsushima, Akihiko Nishiki

    Optics Express
    |June 2, 2009
    PubMed
    Summary
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    This study enhances optical code recognition using apodized fiber Bragg gratings. Apodization improves performance in high reflectivity regimes, enabling error-free data transmission for multiple users.

    Area of Science:

    • Photonics and Optical Engineering
    • Fiber Optic Sensing and Communications
    • Signal Processing for Optical Networks

    Background:

    • Superstructured Fiber Bragg Gratings (SSFBGs) are crucial for optical code (OC) recognition.
    • High reflectivity in SSFBGs presents challenges for achieving optimal auto-correlation peak (PA) and signal-to-noise ratios (P/W, P/C).
    • Existing methods struggle to balance high auto-correlation peaks with suppressed side lobes and cross-correlation levels.

    Purpose of the Study:

    • To investigate the performance of phase-shifted SSFBGs for optical code recognition.
    • To address the conflict between high auto-correlation performance and signal-to-noise ratios in high reflectivity regimes.
    • To propose and validate an apodization technique for enhancing SSFBG performance.

    Main Methods:

    Related Experiment Videos

    Last Updated: Jun 22, 2026

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
    09:03

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

    Published on: January 7, 2019

    • Investigated SSFBG performance with varying reflectivity and input pulse widths.
    • Quantitatively evaluated OC recognition using auto-correlation peak (PA) and ratios of PA to wing (P/W) and cross-correlation (P/C) levels.
    • Applied apodization technique to high reflectivity SSFBGs and conducted comparative experimental investigations.

    Main Results:

    • A conflict was observed between high PA and high P/W and P/C ratios in the high reflectivity regime.
    • The proposed apodization technique effectively improved SSFBG performance in the high reflectivity regime.
    • Experimental validation confirmed the effectiveness of the apodized SSFBG.

    Conclusions:

    • Apodization is a viable technique to overcome performance limitations in high reflectivity SSFBGs for optical code recognition.
    • The apodized SSFBG enabled error-free transmission with multiplexing of two active users.
    • Achieved a data rate of 1.25 Gbit/s with the enhanced SSFBG system.