Abstract

The construction, calibration, and use of an integrating cube scattering detector used to measure scattering losses in optical fibers is described. The detector consists of six 1-cm sq silicon solar cells, each sensitive surface of which comprises one interior surface of a cube 1 cm on edge. Small holes in the center of two opposite faces of the cube permit the optical fiber to pass through the detector so that all the scattered light falls on a photosensitive surface.

© 1970 Optical Society of America

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References

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  1. A. R. Tynes, A. David Pearson, D. L. Bisbee, J. Opt. Soc. Amer. 61 (February1971).
  2. A. VanDerZiel, Solid State Physical Electronics (Prentice-Hall, Inc., Englewood Cliffs, N. J., 1957), Chap. 17.
  3. D. A. Kleinman, Bell Syst. Tech. J. 40, 85 (1961).
  4. J. F. China, “On Predicting the Relation Between Voltage and Current Generated by a Spacecraft Solar Cell Array,” Royal Aircraft Establishment Tech. Report 68138, May1968. See also AD845699.
  5. Hoffman: Type 100CL.
  6. The holes can be ground out using the blunt end of a small drill and No. 600 lapping grit, or can be sandblasted using a very small nozzle and beginning on the back side of the solar cell. We have found both techniques to be satisfactory. Also, we have found that the contact between the edge of the solar cell and the fiber does not produce spurious scattering of light from the fiber.

1971 (1)

A. R. Tynes, A. David Pearson, D. L. Bisbee, J. Opt. Soc. Amer. 61 (February1971).

1961 (1)

D. A. Kleinman, Bell Syst. Tech. J. 40, 85 (1961).

Bisbee, D. L.

A. R. Tynes, A. David Pearson, D. L. Bisbee, J. Opt. Soc. Amer. 61 (February1971).

China, J. F.

J. F. China, “On Predicting the Relation Between Voltage and Current Generated by a Spacecraft Solar Cell Array,” Royal Aircraft Establishment Tech. Report 68138, May1968. See also AD845699.

David Pearson, A.

A. R. Tynes, A. David Pearson, D. L. Bisbee, J. Opt. Soc. Amer. 61 (February1971).

Kleinman, D. A.

D. A. Kleinman, Bell Syst. Tech. J. 40, 85 (1961).

Tynes, A. R.

A. R. Tynes, A. David Pearson, D. L. Bisbee, J. Opt. Soc. Amer. 61 (February1971).

VanDerZiel, A.

A. VanDerZiel, Solid State Physical Electronics (Prentice-Hall, Inc., Englewood Cliffs, N. J., 1957), Chap. 17.

Bell Syst. Tech. J. (1)

D. A. Kleinman, Bell Syst. Tech. J. 40, 85 (1961).

J. Opt. Soc. Amer. (1)

A. R. Tynes, A. David Pearson, D. L. Bisbee, J. Opt. Soc. Amer. 61 (February1971).

Other (4)

A. VanDerZiel, Solid State Physical Electronics (Prentice-Hall, Inc., Englewood Cliffs, N. J., 1957), Chap. 17.

J. F. China, “On Predicting the Relation Between Voltage and Current Generated by a Spacecraft Solar Cell Array,” Royal Aircraft Establishment Tech. Report 68138, May1968. See also AD845699.

Hoffman: Type 100CL.

The holes can be ground out using the blunt end of a small drill and No. 600 lapping grit, or can be sandblasted using a very small nozzle and beginning on the back side of the solar cell. We have found both techniques to be satisfactory. Also, we have found that the contact between the edge of the solar cell and the fiber does not produce spurious scattering of light from the fiber.

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Figures (6)

Fig. 1
Fig. 1

Schematic diagram of solar cell array.

Fig. 2
Fig. 2

Schematic diagram of test setup used to determine linearity of output with power input.

Fig. 3
Fig. 3

Variation of sensitivity over solar cell surface. Apparent decline in sensitivity near edge of detector is due to light beam (diam = 0.050 in.) beginning to miss edges of detector.

Fig. 4
Fig. 4

Schematic diagram of test setup used to determine the effect of varying the distribution of the light over the various solar cells.

Fig. 5
Fig. 5

Variation of solar cell response with angle of incidence.

Fig. 6
Fig. 6

Schematic diagram of apparatus used to measure scattering loss and total loss in fibers.

Tables (1)

Tables Icon

Table I Calibration Data to Show Linearity of Output with Incident Power (See Fig. 2)

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