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Optical fiber communication experiment at 5 Gbit/sec.

R Tell, S T Eng

    Applied Optics
    |April 8, 2010
    PubMed
    Summary

    This study demonstrates high-speed optical fiber communication, achieving 5 Gbit/sec with a TJS laser. Bit-error rates below 10(-9) confirm the feasibility of this advanced data transmission method.

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    Area of Science:

    • Optoelectronics
    • Telecommunications Engineering
    • Materials Science

    Background:

    • Optical fiber communication systems are crucial for high-speed data transmission.
    • Advancements in laser technology and receiver components are key to increasing data rates.
    • Previous experiments have explored various laser types and fiber optic configurations.

    Purpose of the Study:

    • To investigate the feasibility of high-speed optical fiber communication.
    • To evaluate the performance of different laser types (BH and TJS) at high data rates.
    • To assess the overall system performance including fiber coupling and receiver sensitivity.

    Main Methods:

    • Conducted a Gbit/sec optical fiber communication experiment using a 500-m single-mode fiber.
    • Employed a Buried Heterostructure (BH) laser and a Twin-Guide Structure (TJS) laser for transmission.
    • Utilized a Silicon avalanche photodiode receiver with a 10-Gbit/sec GaAs MESFET AND gate.

    Main Results:

    • Achieved a maximum transmission speed of 3 Gbit/sec with the BH laser.
    • Reached a maximum transmission speed of 5 Gbit/sec with the TJS laser.
    • Minimum coupling loss of 10 dB was observed with butt-end coupling.
    • Bit-error rates (BER) below 10(-9) were recorded at 5 Gbit/sec.

    Conclusions:

    • The TJS laser enables optical fiber communication at 5 Gbit/sec.
    • The experimental setup, including the Si-avalanche photodiode and GaAs MESFET gate, supports high-speed data rates.
    • The results validate the practical feasibility of optical fiber transmission at 5 Gbit/sec.

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