Abstract

Curie point writing and Kerr signal reading in magneto-optical disk media are accomplished with a flint glass single-mode fiber that connects the optical source (laser diode)–detector and the magneto-optical medium. The Kerr signal is detected sensitively with high stability against external disturbances such as stress and deformation of the fiber. This technique offers a simple, flexible, light, movable, and remotely settable means for signal processing of magneto-optical devices.

© 1999 Optical Society of America

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References

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    [CrossRef]
  2. N. C. Pistoni and M. Martinelli, Opt. Lett. 18, 314 (1993).
    [CrossRef]
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    [CrossRef]
  4. T. Yoshino and S. Tanaka, Opt. Commun. 1, 149 (1969).
    [CrossRef]

1995

K. Kurosawa, S. Yoshida, and K. Sakamoto, J. Lightwave Technol. 13, 1378 (1995).
[CrossRef]

1993

1977

A. Simon and R. Ulrich, Appl. Phys. Lett. 31, 517 (1977).
[CrossRef]

1969

T. Yoshino and S. Tanaka, Opt. Commun. 1, 149 (1969).
[CrossRef]

Kurosawa, K.

K. Kurosawa, S. Yoshida, and K. Sakamoto, J. Lightwave Technol. 13, 1378 (1995).
[CrossRef]

Martinelli, M.

Pistoni, N. C.

Sakamoto, K.

K. Kurosawa, S. Yoshida, and K. Sakamoto, J. Lightwave Technol. 13, 1378 (1995).
[CrossRef]

Simon, A.

A. Simon and R. Ulrich, Appl. Phys. Lett. 31, 517 (1977).
[CrossRef]

Tanaka, S.

T. Yoshino and S. Tanaka, Opt. Commun. 1, 149 (1969).
[CrossRef]

Ulrich, R.

A. Simon and R. Ulrich, Appl. Phys. Lett. 31, 517 (1977).
[CrossRef]

Yoshida, S.

K. Kurosawa, S. Yoshida, and K. Sakamoto, J. Lightwave Technol. 13, 1378 (1995).
[CrossRef]

Yoshino, T.

T. Yoshino and S. Tanaka, Opt. Commun. 1, 149 (1969).
[CrossRef]

Appl. Phys. Lett.

A. Simon and R. Ulrich, Appl. Phys. Lett. 31, 517 (1977).
[CrossRef]

J. Lightwave Technol.

K. Kurosawa, S. Yoshida, and K. Sakamoto, J. Lightwave Technol. 13, 1378 (1995).
[CrossRef]

Opt. Commun.

T. Yoshino and S. Tanaka, Opt. Commun. 1, 149 (1969).
[CrossRef]

Opt. Lett.

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Figures (4)

Fig. 1
Fig. 1

Experimental systems for (a) reading and (b) writing in a fiber-coupling MO disk. Abbreviations are defined in text.

Fig. 2
Fig. 2

Photodetector signals S in a fiber-coupling MO disk measured as a function of heating laser diode current I (polarizer–analyzer angle θ=+45°) when magnetic fields of ±H=±250 G were alternately applied writing. Data for two experiments are shown by the solid and dashed curves.

Fig. 3
Fig. 3

Photodetector signal S in a fiber-coupling MO disk measured against relative position between reading laser beam and recorded spots θ=+45°.

Fig. 4
Fig. 4

Data points of photodetector signal S for repetitive experiments in writing and reading in a fiber-coupled MO disk. Magnetic fields ±H=±250 G were applied alternately to writing at the measured polarizer–analyzer angles θ.

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