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Related Concept Videos

Prismatic Beams: Problem Solving01:15

Prismatic Beams: Problem Solving

In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the designer...
Design of Prismatic Beams for Bending01:23

Design of Prismatic Beams for Bending

The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and stress...
Unsymmetric Loading of Thin-Walled Members01:23

Unsymmetric Loading of Thin-Walled Members

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Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

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Design of Transmission Shafts - Stress Analysis01:15

Design of Transmission Shafts - Stress Analysis

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Shearing Stresses in a Beam: Problem Solving

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Related Experiment Video

Updated: Jun 12, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Simplified analysis and structural design for ridge mos optical waveguides.

C Ma, S Liu

    Applied Optics
    |June 26, 2010
    PubMed
    Summary

    A simplified method analyzes optical waveguide characteristics, calculating effective refractive indices and absorption loss. This research guides structural parameter selection for efficient single-mode propagation in ridge MOS optical waveguides.

    Area of Science:

    • Optoelectronics
    • Materials Science
    • Photonics

    Background:

    • Ridge MOS optical waveguides are crucial components in photonic integrated circuits.
    • Accurate analysis of their optical characteristics is essential for device performance optimization.

    Purpose of the Study:

    • To present a simplified analytical method for evaluating the optical properties of ridge MOS optical waveguides.
    • To derive equations for key optical parameters, including effective refractive indices and absorption loss coefficients.

    Main Methods:

    • Development of a simplified analytical framework for optical waveguide analysis.
    • Derivation of mathematical equations for calculating effective refractive indices and absorption loss coefficients.
    • Numerical computations performed on specific air-Au-air/SiO(2)/GaAs/AlGaAs waveguide structures.

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    Last Updated: Jun 12, 2026

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    Main Results:

    • The study provides a method to calculate effective refractive indices for E(x)(pq) modes.
    • Absorption loss coefficients for E(x)(pq) modes are determined.
    • Analysis of air-Au-air/SiO(2)/GaAs/AlGaAs waveguides is presented.

    Conclusions:

    • The derived method enables efficient analysis of ridge MOS optical waveguide characteristics.
    • Appropriate selection of structural parameters is critical for achieving single-mode propagation with low absorption loss.
    • This work contributes to the design and optimization of advanced optical waveguide devices.