A new graphical method relating to optical fiber attenuation

Inada, K.

doi:10.1016/0030-4018(76)90117-6

Cited by 60 publications

(6 citation statements)

References 3 publications

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“…tering[26].Fibers B and D do not exhibit this effect. Fiber D has a very small residual loss coefficient E which was unusual in the fibers tested.It is instructive to compare these results with pure silica.…”

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confidence: 87%

Backscatter measurements on optical fibers

Danielson¹

1981

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An optical time domain ref lectometer (OTDR) and its components are described in detail. The system performance for this device is examined. Experimental methods are described for the measurement of several parameters of interest in the characterization of optical fibers usinq the OTOR. These parameters include scatterinq loss and capture fractions for unperturbed fibers. Experimental capture-fraction values are reported for several step and qraded-index fibers and these results are compared with theoretical predictions. Rayleiqh backscatter siqnatures are also presented for several fibers from different manufacturers. Fault signatures are shown for some intrinsic and extrinsic fiber perturbations.

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confidence: 87%

Backscatter measurements on optical fibers

Danielson¹

1981

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“…Since Rayleigh scattering is inversely proportional to the fourth power of the wavelength λ, Inada proposed plotting a loss spectrum of an optical fiber with the horizontal axis of 1 ⁄ as a convenient method to analyze the loss spectrum [29]. With this 1 ⁄ plotting, Rayleigh scattering coefficient A can be obtained from the slope of the straightline portion, and the y axis intercept of the straight line can be recognized as B.…”

Section: Formulation Of Optical Fiber Loss Factorsmentioning

confidence: 99%

Transmission Loss of Optical Fibers; Achievements in Half a Century

Kanamori

2021

IEICE Trans. Commun.

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This paper reviews the evolutionary process that reduced the transmission loss of silica optical fibers from the report of 20 dB/km by Corning in 1970 to the current record-low loss. At an early stage, the main effort was to remove impurities especially hydroxy groups for fibers with GeO 2-SiO 2 core, resulting in the loss of 0.20 dB/km in 1980. In order to suppress Rayleigh scattering due to composition fluctuation, pure-silicacore fibers were developed, and the loss of 0.154 dB/km was achieved in 1986. As the residual main factor of the loss, Rayleigh scattering due to density fluctuation was actively investigated by utilizing IR and Raman spectroscopy in the 1990s and early 2000s. Now, ultra-low-loss fibers with the loss of 0.150 dB/km are commercially available in trans-oceanic submarine cable systems.

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“…The transmission loss is mainly attributed to two sources: Rayleigh scattering that is strongly dependent on the wavelength, and the waveguide imperfections that are mostly independent of the wavelength [64]. Therefore, the loss CY is expressed by the following formula: a = A/X4 + B (25) where A is a constant associated with Rayleigh scattering and B represents the loss due to the waveguide imperfections.…”

Section: B Efect Of Coating Speed On Transmission Lossmentioning

confidence: 99%

High-speed high-strength fiber drawing

Paek¹

1986

J. Lightwave Technol.

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A review of high-speed drawing and coating of optical waveguide fiber, and related work is given. This paper also includes a discussion on the effects of fiber pulling at a high draw rate on the optical and mechanical properties of the silica fiber. The coating mechanics that describes high-speed coating application in terms of process variables is explained. Finally, recent achievements with fibers coated at high speeds are presented.

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A new graphical method relating to optical fiber attenuation

Cited by 60 publications

References 3 publications

Backscatter measurements on optical fibers

Backscatter measurements on optical fibers

Transmission Loss of Optical Fibers; Achievements in Half a Century

High-speed high-strength fiber drawing

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