Abstract

An adjustable access coupler for multimode fiber-optic networks has been constructed, based on the voltage-tunable total-internal-reflection effect in nematic liquid crystals. Fibers are coupled via graded-index rod lenses at normal incidence to flint-glass prisms in contact with a 6-μm liquid-crystal layer. The achromatic four-port switch has a 1.6-dB optical insertion loss, a tap ratio controllable from −4.6 to −48 dB, a directionality of 44 dB, and an operating voltage of 5 to 20 V rms.

© 1979 Optical Society of America

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References

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  1. R. A. Kashnow, C. R. Stein, Appl. Opt. 12, 2309 (1973).
    [CrossRef] [PubMed]
  2. G. Labrunie, S. Valette, Appl. Opt. 13, 1802 (1974).
    [CrossRef] [PubMed]
  3. M. Shimizu, Y. Ueno, at Conference on Laser Engineering and Applications, San Diego, California, February 8, 1978, paper WAA3.
  4. M. Nunoshita, Y. Nomura, T. Matsui, T. Nakayama, Opt. Lett. 4, 27 (1979).
    [CrossRef] [PubMed]
  5. A. F. Milton, U. S. Patent3,918,794, November11, 1975.
  6. T. G. Giallorenzi, J. M. Schnur, U. S. Patent3,980,395, September14, 1976.
  7. M. Schadt, F. Muller, IEEE Trans. Electron. Devices ED-25, 1125 (1978).
    [CrossRef]
  8. R. A. Soref, M. J. Rafuse, J. Appl. Phys. 43, 2029 (1972).
    [CrossRef]

1979 (1)

1978 (1)

M. Schadt, F. Muller, IEEE Trans. Electron. Devices ED-25, 1125 (1978).
[CrossRef]

1974 (1)

1973 (1)

1972 (1)

R. A. Soref, M. J. Rafuse, J. Appl. Phys. 43, 2029 (1972).
[CrossRef]

Giallorenzi, T. G.

T. G. Giallorenzi, J. M. Schnur, U. S. Patent3,980,395, September14, 1976.

Kashnow, R. A.

Labrunie, G.

Matsui, T.

Milton, A. F.

A. F. Milton, U. S. Patent3,918,794, November11, 1975.

Muller, F.

M. Schadt, F. Muller, IEEE Trans. Electron. Devices ED-25, 1125 (1978).
[CrossRef]

Nakayama, T.

Nomura, Y.

Nunoshita, M.

Rafuse, M. J.

R. A. Soref, M. J. Rafuse, J. Appl. Phys. 43, 2029 (1972).
[CrossRef]

Schadt, M.

M. Schadt, F. Muller, IEEE Trans. Electron. Devices ED-25, 1125 (1978).
[CrossRef]

Schnur, J. M.

T. G. Giallorenzi, J. M. Schnur, U. S. Patent3,980,395, September14, 1976.

Shimizu, M.

M. Shimizu, Y. Ueno, at Conference on Laser Engineering and Applications, San Diego, California, February 8, 1978, paper WAA3.

Soref, R. A.

R. A. Soref, M. J. Rafuse, J. Appl. Phys. 43, 2029 (1972).
[CrossRef]

Stein, C. R.

Ueno, Y.

M. Shimizu, Y. Ueno, at Conference on Laser Engineering and Applications, San Diego, California, February 8, 1978, paper WAA3.

Valette, S.

Appl. Opt. (2)

IEEE Trans. Electron. Devices (1)

M. Schadt, F. Muller, IEEE Trans. Electron. Devices ED-25, 1125 (1978).
[CrossRef]

J. Appl. Phys. (1)

R. A. Soref, M. J. Rafuse, J. Appl. Phys. 43, 2029 (1972).
[CrossRef]

Opt. Lett. (1)

Other (3)

A. F. Milton, U. S. Patent3,918,794, November11, 1975.

T. G. Giallorenzi, J. M. Schnur, U. S. Patent3,980,395, September14, 1976.

M. Shimizu, Y. Ueno, at Conference on Laser Engineering and Applications, San Diego, California, February 8, 1978, paper WAA3.

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Figures (3)

Fig. 1
Fig. 1

Electro-optical switching in liquid-crystal film by total or partial reflection.

Fig. 2
Fig. 2

Structure of fiber-optic liquid-crystal switch.

Fig. 3
Fig. 3

Experimental response of multimode fiber-optic switch.

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