Abstract

A novel optical element for a bulk glass current sensor that utilizes the Faraday effect is presented with a demonstrated sensitivity of 1 amp-turn and a flat frequency response in the range of 10–104 Hz. The new sensing element overcomes the problems associated with birefringence in optical fiber current sensors and the requirement to make bulk-optic current sensors in complex three-dimensional topologies.

© 1991 Optical Society of America

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References

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  1. G. W. Day, Optical Fiber Sensors, Vol. 44 of Springer Series in Physics (Springer-Verlag, Berlin, 1988), p. 250.
    [Crossref]
  2. A. J. Rogers, J. Optoelectron. 3, 391 (1988).
  3. A. Ben-Kish, N. Konforti, M. Tur, E. Shafir, in Proceedings of Seventh Optical Fibre Sensors Conference (Institute of Radio and Electronics Engineers of Australia, Sydney, 1990), p. 97.
  4. C. L. Carter, J. C. Stites, presented at Protective Relaying Conference, Georgia Institute of Technology, Atlanta, Georgia, April 30–May 1, 1986.
  5. S. P. Bush, D. A. Jackson, Opt. Lett. 16, 955 (1991).
    [Crossref] [PubMed]
  6. S. Donati, V. Annovazzi-Lodi, T. Tambosso, IEE Proc. 135, 372 (1988).
  7. B. Rossi, Optics (Addison-Wesley, Reading, Mass., 1965), pp. 427–430.

1991 (1)

1988 (2)

S. Donati, V. Annovazzi-Lodi, T. Tambosso, IEE Proc. 135, 372 (1988).

A. J. Rogers, J. Optoelectron. 3, 391 (1988).

Annovazzi-Lodi, V.

S. Donati, V. Annovazzi-Lodi, T. Tambosso, IEE Proc. 135, 372 (1988).

Ben-Kish, A.

A. Ben-Kish, N. Konforti, M. Tur, E. Shafir, in Proceedings of Seventh Optical Fibre Sensors Conference (Institute of Radio and Electronics Engineers of Australia, Sydney, 1990), p. 97.

Bush, S. P.

Carter, C. L.

C. L. Carter, J. C. Stites, presented at Protective Relaying Conference, Georgia Institute of Technology, Atlanta, Georgia, April 30–May 1, 1986.

Day, G. W.

G. W. Day, Optical Fiber Sensors, Vol. 44 of Springer Series in Physics (Springer-Verlag, Berlin, 1988), p. 250.
[Crossref]

Donati, S.

S. Donati, V. Annovazzi-Lodi, T. Tambosso, IEE Proc. 135, 372 (1988).

Jackson, D. A.

Konforti, N.

A. Ben-Kish, N. Konforti, M. Tur, E. Shafir, in Proceedings of Seventh Optical Fibre Sensors Conference (Institute of Radio and Electronics Engineers of Australia, Sydney, 1990), p. 97.

Rogers, A. J.

A. J. Rogers, J. Optoelectron. 3, 391 (1988).

Rossi, B.

B. Rossi, Optics (Addison-Wesley, Reading, Mass., 1965), pp. 427–430.

Shafir, E.

A. Ben-Kish, N. Konforti, M. Tur, E. Shafir, in Proceedings of Seventh Optical Fibre Sensors Conference (Institute of Radio and Electronics Engineers of Australia, Sydney, 1990), p. 97.

Stites, J. C.

C. L. Carter, J. C. Stites, presented at Protective Relaying Conference, Georgia Institute of Technology, Atlanta, Georgia, April 30–May 1, 1986.

Tambosso, T.

S. Donati, V. Annovazzi-Lodi, T. Tambosso, IEE Proc. 135, 372 (1988).

Tur, M.

A. Ben-Kish, N. Konforti, M. Tur, E. Shafir, in Proceedings of Seventh Optical Fibre Sensors Conference (Institute of Radio and Electronics Engineers of Australia, Sydney, 1990), p. 97.

IEE Proc. (1)

S. Donati, V. Annovazzi-Lodi, T. Tambosso, IEE Proc. 135, 372 (1988).

J. Optoelectron. (1)

A. J. Rogers, J. Optoelectron. 3, 391 (1988).

Opt. Lett. (1)

Other (4)

G. W. Day, Optical Fiber Sensors, Vol. 44 of Springer Series in Physics (Springer-Verlag, Berlin, 1988), p. 250.
[Crossref]

A. Ben-Kish, N. Konforti, M. Tur, E. Shafir, in Proceedings of Seventh Optical Fibre Sensors Conference (Institute of Radio and Electronics Engineers of Australia, Sydney, 1990), p. 97.

C. L. Carter, J. C. Stites, presented at Protective Relaying Conference, Georgia Institute of Technology, Atlanta, Georgia, April 30–May 1, 1986.

B. Rossi, Optics (Addison-Wesley, Reading, Mass., 1965), pp. 427–430.

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Figures (6)

Fig. 1
Fig. 1

Computer simulation of the optical path undertaken by the light.

Fig. 2
Fig. 2

Optical system. Hi-Bi, high birefringence.

Fig. 3
Fig. 3

Variation of the output signal as a function of input ac current at 50 Hz for channels 1 and 2.

Fig. 4
Fig. 4

Variation of the output signal as a function of input dc current for channels 1 and 2.

Fig. 5
Fig. 5

Variation in the azimuthal angle as a function of current for channel 2.

Fig. 6
Fig. 6

Variation of the input signal as a function of frequency and current amplitude for channel 1.

Equations (8)

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Φ F = 0 l V H d l ,
Φ F = V N c N f I ,
0 l V H d l + ϕ c ,
E n = P ( ϕ ) F n R F n - 1 R F 2 R F 1 E in             ( n = 15 or 44 ) ,
P ( ϕ ) = [ cos 2 ϕ sin ϕ cos ϕ sin ϕ cos ϕ sin 2 ϕ ] , R = [ ρ x 0 0 ρ y ] ,
F i = [ A - B B A * ] ,
A = cos ( ψ / 2 ) + i sin ( ψ / 2 ) cos ( χ ) , B = sin ( ψ / 2 ) sin ( χ ) , tan ( χ ) = 2 F i / γ ,             ( ψ / 2 ) 2 = ( γ / 2 ) 2 + F i 2 ,
F i ( α i ) = [ cos ( α i ) - sin ( α i ) sin ( α i ) cos ( α i ) ] .

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