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1Numerical aperture limits on efficient ball lens coupling of laser diodes to single-mode fibers with defocus to balance spherical aberration

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“Numerical aperture limits on efficient ball lens coupling of laser diodes to single-mode fibers with defocus to balance spherical aberration” Metadata:

  • Title: ➤  Numerical aperture limits on efficient ball lens coupling of laser diodes to single-mode fibers with defocus to balance spherical aberration
  • Author:
  • Language: English
  • Publisher: ➤  National Technical Information Service, distributor - National Aeronautics and Space Administration, Langley Research Center
  • Publish Date:
  • Publish Location: Hampton, Va - [Springfield, Va

“Numerical aperture limits on efficient ball lens coupling of laser diodes to single-mode fibers with defocus to balance spherical aberration” Subjects and Themes:

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Access and General Info:

  • First Year Published: 1994
  • Is Full Text Available: No
  • Is The Book Public: No
  • Access Status: No_ebook

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    Numerical aperture

    In optics, the numerical aperture (NA) of an optical system is a dimensionless number that characterizes the range of angles over which the system can

    Launch numerical aperture

    In telecommunications, launch numerical aperture (LNA) is the numerical aperture of an optical system used to couple (launch) power into an optical fiber

    F-number

    the numerical aperture (NA) of the system, which measures the range of angles over which light can enter or exit the system. The numerical aperture takes

    Diffraction-limited system

    spatial resolution is proportional to the light wavelength, and to the numerical aperture of either the objective or the object illumination source, whichever

    Angular aperture

    the aperture. In a medium with an index of refraction close to 1, such as air, the angular aperture is approximately equal to twice the numerical aperture

    Objective (optics)

    referred to as the large objective lens and is typically 40–100×. Numerical aperture for microscope lenses typically ranges from 0.10 to 1.25, corresponding

    Condenser (optics)

    The aperture and angle of the light cone must be adjusted (via the size of the diaphragm) for each different objective lens with different numerical apertures

    Cladding (fiber optics)

    cladding that raises the total outer diameter to 125 microns. The numerical aperture of a multimode optical fiber is a function of the indices of refraction

    Overfill

    telecommunications, overfill is the condition that prevails when the numerical aperture or the beam diameter of an optical source, such as a laser, light-emitting

    Ball lens

    lens, and the lens's large ratio of diameter to focal length (large numerical aperture) allows more light to be captured than would be possible with other


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