Abstract

Light from a pulsed GaAs injection laser is coupled into a glass fiber via a taper coupler. The time dependence of the light backscattered within the fiber as the pulse travels down the waveguide is recorded. From these data the total loss may be determined, as well as an estimate of the scattering and mode mixing characteristics of the fiber.

© 1976 Optical Society of America

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References

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  1. J. E. Midwinter, Opt. Quantum Electron. 7, 297 (1975).
    [CrossRef]
  2. M. K. Barnoski, R. M. Morrison, Appl. Opt. 15, 253 (1976).
    [CrossRef] [PubMed]
  3. D. M. Jenkins, “Updated Optical Waveguide Measurement Techniques and Detailed Equipment Listing to be Made Available for Instructional Purpose in Assembling a Similar Measuring System,” Corning Glass Works R&D Lab, Technical Staff Division, 19March1974 (internal report).
  4. J. Topping, Errors of Observation and Their Treatment (Reinhold Publishing Corporation, New York, 1960).

1976 (1)

1975 (1)

J. E. Midwinter, Opt. Quantum Electron. 7, 297 (1975).
[CrossRef]

Barnoski, M. K.

Jenkins, D. M.

D. M. Jenkins, “Updated Optical Waveguide Measurement Techniques and Detailed Equipment Listing to be Made Available for Instructional Purpose in Assembling a Similar Measuring System,” Corning Glass Works R&D Lab, Technical Staff Division, 19March1974 (internal report).

Midwinter, J. E.

J. E. Midwinter, Opt. Quantum Electron. 7, 297 (1975).
[CrossRef]

Morrison, R. M.

Topping, J.

J. Topping, Errors of Observation and Their Treatment (Reinhold Publishing Corporation, New York, 1960).

Appl. Opt. (1)

Opt. Quantum Electron. (1)

J. E. Midwinter, Opt. Quantum Electron. 7, 297 (1975).
[CrossRef]

Other (2)

D. M. Jenkins, “Updated Optical Waveguide Measurement Techniques and Detailed Equipment Listing to be Made Available for Instructional Purpose in Assembling a Similar Measuring System,” Corning Glass Works R&D Lab, Technical Staff Division, 19March1974 (internal report).

J. Topping, Errors of Observation and Their Treatment (Reinhold Publishing Corporation, New York, 1960).

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Figures (4)

Fig. 1
Fig. 1

Experimental arrangement used to record return optical waveform.

Fig. 2
Fig. 2

(a) Oscillogram of typical return waveform. (b) The same waveform with the gain expanded a factor of ten. (c) The optical pulse directly emitted by the laser and detected by the 20-MHz detection system. The time scale for all traces is 500 nsec/div.

Fig. 3
Fig. 3

A logarithmic plot of the backscattered light for two fibers in the Corguide cable.

Fig. 4
Fig. 4

The angular distribution of the light output of two fibers with the same input coupling angle θ = 12°.

Tables (1)

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Table I Experimentally Determined Attenuation Characteristics for the Five Corguide Fibers

Equations (7)

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P ( X ) = P ( X 1 ) exp [ - X 1 X α ( x ) d x ] = P ( X 1 ) exp [ - α ¯ ( X - X 1 ) ] ,
α ¯ = 1 X 2 - X 1 X 1 X 2 α ( x ) d x .
P ( X ) = P ( O ) exp [ - O X α ( x ) d x ] ,
P d ( X ) = P R ( X ) exp [ - O X α ( x ) d x ] ,
P d ( X ) = S P ( o ) exp { - O X [ α ( x ) + α ( x ) ] d x } .
α ¯ - [ ln P d ( X ) - ln P d ( X 1 ) ] 2 ( X - X 1 ) ,
α ¯ = X 1 X [ α ( x ) + α ( x ) ] d x 2 ( X - X 1 ) .

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