Refracted-ray scanning (refracted near-field scanning) for measuring index profiles of optical fibers

Young, Matt

doi:10.6028/nbs.tn.1038

Cited by 3 publications

(6 citation statements)

References 28 publications

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“…Therefore, it is necessary to design a three-or four-element lens or to use high-aperture Fresnel lenses. 5 Fresnel lenses give substantially greater working distance between the cell and the lens and are preferable from that standpoint. However, some of the data presented here were obtained with a three-element condenser designed from stock plano-convex elements.…”

Section: Apparatusmentioning

confidence: 99%

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Optical fiber index profiles by the refracted-ray method (refracted near-field scanning)

Young

1981

Appl. Opt.

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This paper has two primary purposes. First, it provides an elementary description and tutorial overview of the refracted-ray method of measuring fiber index profiles. Second, it presents new results concerning the theoretical foundation, the linearity and precision, and other aspects of the method. In particular, we find that index differences may be measured to 5% or better and conclude by showing ~3% agreement with another laboratory and good agreement with numerical aperture measurements performed by participants in an interlaboratory comparison.

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Section: Apparatusmentioning

confidence: 99%

“…This paper summarizes, and I refer the reader to Ref. 5 for specifics. I have also discussed other measurement techniques in Ref.…”

Section: Introductionmentioning

confidence: 99%

Optical fiber index profiles by the refracted-ray method (refracted near-field scanning)

Young

1981

Appl. Opt.

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“…In principle if waveguides supporting many optical modes are measured, the intensity profile closely matches the index of refraction profile [1]. If single mode waveguides are used, the index profile can be derived from the mode profile [2,3].…”

Section: Introductionmentioning

confidence: 98%

“…Software program SURFER can be used to draw contour lines (Section 11. 1) or intensity profiles (Section 11.2) of signals.…”

mentioning

confidence: 99%

System for measuring optical waveguide intensity profiles

Larson¹,

Larson²,

Phelan³

1988

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“…900 2.5 Equation (37) has been used by standards committees [9] as a necessary condition for a valid measurement of "intermodal bandwidth". As indicated in section 3.1.2, M is a fairly weak function of glass composition but a strong function of wavelength.…”

Section: Intramodal Dispersionmentioning

confidence: 99%