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    Rise Time Budget Anaylases

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    mitaliswagh2002
    Definition: Rise time is the duration for an optical signal to transition between defined power levels (e.g., 10% to 90% of its peak power). Components: Analysis involves optical source characteristics (e.g., laser diode), detector behavior, fiber properties (dispersion), and elements like connectors and splices. Transmission System: Consideration of amplifiers, filters, and other components influencing the rise time. Optimization: Engineers balance factors like bandwidth, dispersion

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    Rise Time Budget Anaylases

    Uploaded by

    mitaliswagh2002
    208 views16 pages
    Definition: Rise time is the duration for an optical signal to transition between defined power levels (e.g., 10% to 90% of its peak power). Components: Analysis involves optical source characteristics (e.g., laser diode), detector behavior, fiber properties (dispersion), and elements like connectors and splices. Transmission System: Consideration of amplifiers, filters, and other components influencing the rise time. Optimization: Engineers balance factors like bandwidth, dispersion

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    Rise Time budget anaylases

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    Definition: Rise time is the duration for an optical signal to transition between defined power levels (e.g., 10% to 90% of its peak power). Components: Analysis involves optical source characteristics (e.g., laser diode), detector behavior, fiber properties (dispersion), and elements like connectors and splices. Transmission System: Consideration of amplifiers, filters, and other components influencing the rise time. Optimization: Engineers balance factors like bandwidth, dispersion

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    208 views16 pages

    Rise Time Budget Anaylases

    Uploaded by

    mitaliswagh2002
    Definition: Rise time is the duration for an optical signal to transition between defined power levels (e.g., 10% to 90% of its peak power). Components: Analysis involves optical source characteristics (e.g., laser diode), detector behavior, fiber properties (dispersion), and elements like connectors and splices. Transmission System: Consideration of amplifiers, filters, and other components influencing the rise time. Optimization: Engineers balance factors like bandwidth, dispersion

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 16

    DEOGIRI INSTITUTE OF ENGINEERING AND MANAGEMENT STUDIES

    DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION

    CA-2 presentation B.Tech 2023-24, SEM-I, Div: A


    Subject: Fiber Optic Communication, Course Code: BTETPE702D

    Name of topic
    Rise Time Budget Analysis

    Presented By
    Mitali Suvarnsing Wagh (EC4174)
    Fiber Optic Communication
    RISE TIME BUDGET ANALYSIS
    INDEX
    • Introduction
    • Transmitter rise time.
    • Group velocity dispersion rise time.
    • Modal dispersion rise time.
    • Receiver rise time.
    • Calculation
    • Different System
    • Example
    • Conclusion
    INTRODUCTION
    • The rise time budget analysis is used to determine the dispersion
    limitation of an optical link.
    OR
    • A rise-time budget analysis is a convenient method for determining
    the dispersion limitation of an optical fiber link, useful for digital
    systems.
    • Total rise time of optical system is given by:
    Root-sum-square of rise time of each element.
    There are four major basic elements, which limits speed of the
    system. These are as follows:
    1. Transmitter rise time.
    2. Group velocity dispersion rise time.
    3. Modal dispersion rise time.
    4. Receiver rise time.
    TRANSMITTER RISE TIME

    • This type of rise time is contributed by the light source and its driving
    circuitry.

    • This value is generally know to designer.


    GROUP VELOCITY DISPERSION RISE
    TIME
    • Optical cable has group delay dispersion for length L It is given by:

    𝜎
    tmat =DL 𝜆
    MODAL DISPERSION RISE TIME
    • Modal dispersion rise time is given by:

    440
    tmod = 𝐵𝑚
    RECEIVER RISE TIME
    • It is photo detector response with 3dB electrical bandwidth BRx
    • It can be calculated by:
    350
    trx = 𝐵
    𝑅𝑥
    CALCULATION
    • Therefore total rise time of the system can be given by:
    DIFFERENT SYSTEM

    Return to Zero (RZ) Non Return to Zero (NRZ)


    • Total maximum system • Total maximum system
    bandwidth (Mbps) = bandwidth (Mbps) =
    Bt = 0.35/Tsys Bt = 0.70/Tsys

    Therefore, We can draw a conclusion,


    BW is inversely proportional to the DISPERSION.
    Example
    Conclusion
    • In conclusion, Rise time budget analysis is to identify total dispersion
    limitations which is there with optical communication system.
    Thanks!

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