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Related Concept Videos

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Published on: November 30, 2012

Experimental performance comparison for various continuous-wave supercontinuum schemes: ring cavity and single pass

Ju Han Lee, Kazuro Kikuchi

    Optics Express
    |June 6, 2009
    PubMed
    Summary

    We compared three continuous-wave supercontinuum generation methods. Our proposed erbium-doped fiber (EDF)-based ring laser scheme showed superior relative intensity noise performance compared to Raman gain and conventional schemes.

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    Area of Science:

    • Nonlinear Optics
    • Laser Physics
    • Optical Fiber Technology

    Background:

    • Supercontinuum generation is crucial for various optical applications.
    • Different schemes exist for generating continuous-wave (CW) supercontinuum.
    • Understanding the performance and mechanisms of these schemes is essential for optimization.

    Purpose of the Study:

    • To experimentally compare the performance of three distinct CW supercontinuum generation schemes.
    • To analyze the physical mechanisms governing supercontinuum evolution in each scheme.
    • To identify the scheme with the best relative intensity noise (RIN) performance.

    Main Methods:

    • Experimental setup utilizing nonlinear optical fibers, specifically highly-nonlinear dispersion-shifted fiber (HNL-DSF).
    • Implementation of three distinct schemes: 1) Erbium-doped fiber (EDF)-based ring laser, 2) Raman gain-based ring laser, and 3) Conventional single-pass pump beam.
    • Comparative analysis of supercontinuum generation and relative intensity noise.

    Main Results:

    • All three schemes demonstrated different physical mechanisms for supercontinuum evolution from a CW pump beam.
    • The proposed EDF-based ring laser scheme exhibited a notable advantage in relative intensity noise performance.
    • The Raman gain-based and conventional schemes showed distinct supercontinuum characteristics and noise profiles.

    Conclusions:

    • The EDF-based ring laser scheme offers superior relative intensity noise performance for CW supercontinuum generation.
    • The choice of scheme significantly impacts both the supercontinuum evolution dynamics and noise characteristics.
    • This study provides valuable insights for selecting and optimizing supercontinuum generation techniques.