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Related Concept Videos

Pulse01:16

Pulse

When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical indicator...

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High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging
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All-fiber pulse compression at 1.32 microm.

K J Blow, N J Doran, B P Nelson

    Optics Letters
    |September 3, 2009
    PubMed
    Summary

    Researchers developed an all-fiber pulse compressor for 1.32 micrometer light, achieving 70 picosecond pulse widths from 130 picosecond inputs. This breakthrough demonstrates novel optical pulse compression capabilities using tailored waveguide dispersion in optical fibers.

    Area of Science:

    • Optics and Photonics
    • Nonlinear Optics
    • Fiber Optics

    Background:

    • Optical pulse compression is crucial for various applications, including high-speed communications and laser processing.
    • Achieving significant pulse compression at 1.32 micrometers presents unique challenges due to material properties and dispersion characteristics.
    • Existing pulse compression techniques often involve bulk optics or specialized setups, limiting their integration and scalability.

    Purpose of the Study:

    • To demonstrate the first all-fiber optical pulse compressor operating at 1.32 micrometers.
    • To investigate the use of tailored waveguide dispersion in optical fibers for pulse compression.
    • To achieve significant compression of picosecond optical pulses using a compact fiber-based system.

    Main Methods:

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    • Construction of a pulse compressor utilizing two distinct optical fibers with adjustable waveguide dispersion.
    • Engineering fibers with both positive and negative dispersion characteristics at the target wavelength of 1.32 micrometers.
    • Experimental demonstration of optical pulse compression and measurement of the compressed pulse width.

    Main Results:

    • Successful construction and operation of an all-fiber pulse compressor.
    • Demonstrated compression of 130-picosecond (psec) optical pulses down to 70 psec.
    • Experimental results align with theoretical calculations predicting a 50 psec pulse width.

    Conclusions:

    • This study reports the first demonstration of an all-fiber pulse compressor.
    • The research validates the effectiveness of manipulating waveguide dispersion in optical fibers for pulse compression at 1.32 micrometers.
    • The developed all-fiber system offers a promising platform for future advancements in high-resolution optical pulse generation and manipulation.