Abstract

Three different optical-fiber phase modulators utilizing the magnetostrictive properties of a metallic-glass alloy were constructed. By binding the optical fiber to the magnetostrictive metallic glass, the strain induced in the metallic glass that is due to the magnetic field is transferred to the optical fiber. Two ring and one flat linear modulator configurations were investigated. Each modulator's performance was evaluated by measuring the induced phase shift as a function of the excitation frequency of the magnetic field normalized by the fiber length. The highest sensitivity of 75 mrad/cm-Oe was attained for the linear modulator.

© 1981 Optical Society of America

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References

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  1. D. A. Jackson, A. Dandridge, S. K. Sheem, “Measurement of small phase shifts using a single-mode optical fiber interferometer,” Opt. Lett. 5, 139 (1980).
    [CrossRef] [PubMed]
  2. I. J. Bush, “Accurate phase-measurement system for a fiber optic interferometer,” in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1981), paper ThE3.
  3. R. A. Bergh, H. C. Lefevre, H. J. Shaw, “All single-mode fiber-optic gyroscope,” Opt. Lett. 6,198 (1981).
    [CrossRef] [PubMed]
  4. F. E. Luborsky, “Amorphous ferromagnetics,” in Ferromagnetic Materials, E. P. Wohlfarth, ed. (North-Holland, Amsterdam, 1980), Vol. I, p. 503.
  5. M. A. Mitchell, A. E. Clark, H. J. Savage, R. J. Abundi, “ΔE effect and magnetomechanical coupling factor in Fe78Si10B12 glassy ribbons,” IEEE Trans. Magn. M-12, 1170 (1978).
  6. Technical Committee on Transducers and Resonators of IEEE Group on Sonics and Ultrasonics, “IEEE Standard on Magnetostrictive Materials; Piezomagnetic Nomenclature” (Institute of Electrical and Electronics Engineers, New York, 1973), p. 67.
  7. M. Brouha, J. van der Borst, “The effect of annealing conditions on the magnetomechanical properties of Fe-B-5: amorphous ribbons,” J. Appl. Phy. 50, 7594 (1975).
    [CrossRef]
  8. R. C. O'Handley, “Magnetostriction of metallic glasses,” in Amorphous Magnetism II, R. A. Levy, R. Hasegawa, eds. (Plenum, New York, 1977), p. 386.

1981

1980

1978

M. A. Mitchell, A. E. Clark, H. J. Savage, R. J. Abundi, “ΔE effect and magnetomechanical coupling factor in Fe78Si10B12 glassy ribbons,” IEEE Trans. Magn. M-12, 1170 (1978).

1975

M. Brouha, J. van der Borst, “The effect of annealing conditions on the magnetomechanical properties of Fe-B-5: amorphous ribbons,” J. Appl. Phy. 50, 7594 (1975).
[CrossRef]

Abundi, R. J.

M. A. Mitchell, A. E. Clark, H. J. Savage, R. J. Abundi, “ΔE effect and magnetomechanical coupling factor in Fe78Si10B12 glassy ribbons,” IEEE Trans. Magn. M-12, 1170 (1978).

Bergh, R. A.

Brouha, M.

M. Brouha, J. van der Borst, “The effect of annealing conditions on the magnetomechanical properties of Fe-B-5: amorphous ribbons,” J. Appl. Phy. 50, 7594 (1975).
[CrossRef]

Bush, I. J.

I. J. Bush, “Accurate phase-measurement system for a fiber optic interferometer,” in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1981), paper ThE3.

Clark, A. E.

M. A. Mitchell, A. E. Clark, H. J. Savage, R. J. Abundi, “ΔE effect and magnetomechanical coupling factor in Fe78Si10B12 glassy ribbons,” IEEE Trans. Magn. M-12, 1170 (1978).

Dandridge, A.

Jackson, D. A.

Lefevre, H. C.

Luborsky, F. E.

F. E. Luborsky, “Amorphous ferromagnetics,” in Ferromagnetic Materials, E. P. Wohlfarth, ed. (North-Holland, Amsterdam, 1980), Vol. I, p. 503.

Mitchell, M. A.

M. A. Mitchell, A. E. Clark, H. J. Savage, R. J. Abundi, “ΔE effect and magnetomechanical coupling factor in Fe78Si10B12 glassy ribbons,” IEEE Trans. Magn. M-12, 1170 (1978).

O'Handley, R. C.

R. C. O'Handley, “Magnetostriction of metallic glasses,” in Amorphous Magnetism II, R. A. Levy, R. Hasegawa, eds. (Plenum, New York, 1977), p. 386.

Savage, H. J.

M. A. Mitchell, A. E. Clark, H. J. Savage, R. J. Abundi, “ΔE effect and magnetomechanical coupling factor in Fe78Si10B12 glassy ribbons,” IEEE Trans. Magn. M-12, 1170 (1978).

Shaw, H. J.

Sheem, S. K.

van der Borst, J.

M. Brouha, J. van der Borst, “The effect of annealing conditions on the magnetomechanical properties of Fe-B-5: amorphous ribbons,” J. Appl. Phy. 50, 7594 (1975).
[CrossRef]

IEEE Trans. Magn.

M. A. Mitchell, A. E. Clark, H. J. Savage, R. J. Abundi, “ΔE effect and magnetomechanical coupling factor in Fe78Si10B12 glassy ribbons,” IEEE Trans. Magn. M-12, 1170 (1978).

J. Appl. Phy.

M. Brouha, J. van der Borst, “The effect of annealing conditions on the magnetomechanical properties of Fe-B-5: amorphous ribbons,” J. Appl. Phy. 50, 7594 (1975).
[CrossRef]

Opt. Lett.

Other

F. E. Luborsky, “Amorphous ferromagnetics,” in Ferromagnetic Materials, E. P. Wohlfarth, ed. (North-Holland, Amsterdam, 1980), Vol. I, p. 503.

I. J. Bush, “Accurate phase-measurement system for a fiber optic interferometer,” in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1981), paper ThE3.

R. C. O'Handley, “Magnetostriction of metallic glasses,” in Amorphous Magnetism II, R. A. Levy, R. Hasegawa, eds. (Plenum, New York, 1977), p. 386.

Technical Committee on Transducers and Resonators of IEEE Group on Sonics and Ultrasonics, “IEEE Standard on Magnetostrictive Materials; Piezomagnetic Nomenclature” (Institute of Electrical and Electronics Engineers, New York, 1973), p. 67.

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Figures (5)

Fig. 1
Fig. 1

The rigid-and soft-ring modulators consist of a core constructed of many layers of metallic-glass ribbon with insulating and bonding material between layers. The optical fiber is wrapped cylindrically around the ring.

Fig. 2
Fig. 2

The optical fiber is sandwiched between two layers of metallic-glass ribbon. The sandwich strip fits loosely into the coil.

Fig. 3
Fig. 3

The measurement system consists of a cross correlator with optical feedback.

Fig. 4
Fig. 4

Modulation coefficient measured at 1 kHz for various magnetic bias field values for (a) rigid-ring, (b) soft-ring, and (c) strip-modulator configurations.

Fig. 5
Fig. 5

Frequency response of (a) the rigid-ring modulator with 17.9-Oe bias, (b) the soft-ring modulator with 6.46-Oe bias, and (c) the strip modulator with 30.6-Oe magnetic bias field.

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