Abstract

A multimode electrooptical switch that has high isolation between channels has been demonstrated experimentally in a 70-μm-thick plate of Z-cut LiTaO3. The fiber-compatible four-port switch is intended for integration into an optical matrix. The crosspoint consists of an in-plane crossover, two simple optical switches, and a curved connecting waveguide. For convergent input light with a 0.07 numerical aperture, 10% of the initially channeled light was transferred into the crosschannel, and the optical switching ratio of that channel was 26 dB using 450-V dc for control.

© 1977 Optical Society of America

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  1. See also R. A. Soref, “Optoswitch Crosstalk Study,” Final Report on contract F30602-76-C-0129, March1977; available from Rome Air Development Center, Griffiss AFB, New York 13441.
  2. R. A. Soref, Appl. Opt. 15, 2950 (1976).
    [CrossRef] [PubMed]
  3. R. A. Soref, L. R. Schissler, Appl. Opt. 14, 2559 (1975).
    [CrossRef] [PubMed]
  4. A. R. Nelson, D. H. McMahon, R. L. Gravel, Appl. Phys. Lett. 28, 321 (1976).
    [CrossRef]
  5. R. A. Soref, D. H. McMahon, A. R. Nelson, Appl. Phys. Lett. 28, 716 (1976).
    [CrossRef]
  6. A. R. Nelson, D. H. McMahon, in Proceedings of Electro-Optic Systems Design Conference, New York, 14 Sept. 1976 (Industrial and Scientific Conference Mgt., Chicago), paper 2.2, pp. 36–39.
  7. R. A. Soref, A. R. Nelson in Digest of Technical Papers, International Electron Devices Meeting, Washington, D.C., 7 Dec. 1976 (IEEE, 345 E. 47 St., New York 10017), paper 10.3, pp. 229–231.
  8. A. R. Nelson, R. A. Soref (unpublished).
  9. M. G. F. Wilson, C. W. Pitt, R. Manku, A. D. DeOlivera, O. Parriaux, Electron. Lett. 12, 434 (1976).
    [CrossRef]
  10. R. V. Schmidt, H. Kogelnick, Appl. Phys. Lett. 28, 503 (1976).
    [CrossRef]

1976 (5)

A. R. Nelson, D. H. McMahon, R. L. Gravel, Appl. Phys. Lett. 28, 321 (1976).
[CrossRef]

R. A. Soref, D. H. McMahon, A. R. Nelson, Appl. Phys. Lett. 28, 716 (1976).
[CrossRef]

M. G. F. Wilson, C. W. Pitt, R. Manku, A. D. DeOlivera, O. Parriaux, Electron. Lett. 12, 434 (1976).
[CrossRef]

R. V. Schmidt, H. Kogelnick, Appl. Phys. Lett. 28, 503 (1976).
[CrossRef]

R. A. Soref, Appl. Opt. 15, 2950 (1976).
[CrossRef] [PubMed]

1975 (1)

DeOlivera, A. D.

M. G. F. Wilson, C. W. Pitt, R. Manku, A. D. DeOlivera, O. Parriaux, Electron. Lett. 12, 434 (1976).
[CrossRef]

Gravel, R. L.

A. R. Nelson, D. H. McMahon, R. L. Gravel, Appl. Phys. Lett. 28, 321 (1976).
[CrossRef]

Kogelnick, H.

R. V. Schmidt, H. Kogelnick, Appl. Phys. Lett. 28, 503 (1976).
[CrossRef]

Manku, R.

M. G. F. Wilson, C. W. Pitt, R. Manku, A. D. DeOlivera, O. Parriaux, Electron. Lett. 12, 434 (1976).
[CrossRef]

McMahon, D. H.

A. R. Nelson, D. H. McMahon, R. L. Gravel, Appl. Phys. Lett. 28, 321 (1976).
[CrossRef]

R. A. Soref, D. H. McMahon, A. R. Nelson, Appl. Phys. Lett. 28, 716 (1976).
[CrossRef]

A. R. Nelson, D. H. McMahon, in Proceedings of Electro-Optic Systems Design Conference, New York, 14 Sept. 1976 (Industrial and Scientific Conference Mgt., Chicago), paper 2.2, pp. 36–39.

Nelson, A. R.

R. A. Soref, D. H. McMahon, A. R. Nelson, Appl. Phys. Lett. 28, 716 (1976).
[CrossRef]

A. R. Nelson, D. H. McMahon, R. L. Gravel, Appl. Phys. Lett. 28, 321 (1976).
[CrossRef]

A. R. Nelson, D. H. McMahon, in Proceedings of Electro-Optic Systems Design Conference, New York, 14 Sept. 1976 (Industrial and Scientific Conference Mgt., Chicago), paper 2.2, pp. 36–39.

R. A. Soref, A. R. Nelson in Digest of Technical Papers, International Electron Devices Meeting, Washington, D.C., 7 Dec. 1976 (IEEE, 345 E. 47 St., New York 10017), paper 10.3, pp. 229–231.

A. R. Nelson, R. A. Soref (unpublished).

Parriaux, O.

M. G. F. Wilson, C. W. Pitt, R. Manku, A. D. DeOlivera, O. Parriaux, Electron. Lett. 12, 434 (1976).
[CrossRef]

Pitt, C. W.

M. G. F. Wilson, C. W. Pitt, R. Manku, A. D. DeOlivera, O. Parriaux, Electron. Lett. 12, 434 (1976).
[CrossRef]

Schissler, L. R.

Schmidt, R. V.

R. V. Schmidt, H. Kogelnick, Appl. Phys. Lett. 28, 503 (1976).
[CrossRef]

Soref, R. A.

R. A. Soref, D. H. McMahon, A. R. Nelson, Appl. Phys. Lett. 28, 716 (1976).
[CrossRef]

R. A. Soref, Appl. Opt. 15, 2950 (1976).
[CrossRef] [PubMed]

R. A. Soref, L. R. Schissler, Appl. Opt. 14, 2559 (1975).
[CrossRef] [PubMed]

See also R. A. Soref, “Optoswitch Crosstalk Study,” Final Report on contract F30602-76-C-0129, March1977; available from Rome Air Development Center, Griffiss AFB, New York 13441.

R. A. Soref, A. R. Nelson in Digest of Technical Papers, International Electron Devices Meeting, Washington, D.C., 7 Dec. 1976 (IEEE, 345 E. 47 St., New York 10017), paper 10.3, pp. 229–231.

A. R. Nelson, R. A. Soref (unpublished).

Wilson, M. G. F.

M. G. F. Wilson, C. W. Pitt, R. Manku, A. D. DeOlivera, O. Parriaux, Electron. Lett. 12, 434 (1976).
[CrossRef]

Appl. Opt. (2)

Appl. Phys. Lett. (3)

A. R. Nelson, D. H. McMahon, R. L. Gravel, Appl. Phys. Lett. 28, 321 (1976).
[CrossRef]

R. A. Soref, D. H. McMahon, A. R. Nelson, Appl. Phys. Lett. 28, 716 (1976).
[CrossRef]

R. V. Schmidt, H. Kogelnick, Appl. Phys. Lett. 28, 503 (1976).
[CrossRef]

Electron. Lett. (1)

M. G. F. Wilson, C. W. Pitt, R. Manku, A. D. DeOlivera, O. Parriaux, Electron. Lett. 12, 434 (1976).
[CrossRef]

Other (4)

See also R. A. Soref, “Optoswitch Crosstalk Study,” Final Report on contract F30602-76-C-0129, March1977; available from Rome Air Development Center, Griffiss AFB, New York 13441.

A. R. Nelson, D. H. McMahon, in Proceedings of Electro-Optic Systems Design Conference, New York, 14 Sept. 1976 (Industrial and Scientific Conference Mgt., Chicago), paper 2.2, pp. 36–39.

R. A. Soref, A. R. Nelson in Digest of Technical Papers, International Electron Devices Meeting, Washington, D.C., 7 Dec. 1976 (IEEE, 345 E. 47 St., New York 10017), paper 10.3, pp. 229–231.

A. R. Nelson, R. A. Soref (unpublished).

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Figures (13)

Fig. 1
Fig. 1

Two states of crosspoint for crossbar.

Fig. 2
Fig. 2

Compound crosspoint architecture.

Fig. 3
Fig. 3

3 × 3 electrooptical crossbar matrix.

Fig. 4
Fig. 4

End view of electrooptic device package showing top and bottom electrodes.

Fig. 5
Fig. 5

Planar crossings of multimode electrooptic channels: (a) open intersection; (b) rhombic electrode at intersection.

Fig. 6
Fig. 6

Experimental setup for electrooptical crossover and switching measurements.

Fig. 7
Fig. 7

Experimental S/C ratio vs output collection cone angle for a LiTaO3 waveguide crossover.

Fig. 8
Fig. 8

Two designs for a multimode electrooptic simple crosspoint switch: (a) open branch; (b) spoiler in branch channel.

Fig. 9
Fig. 9

Experimental switching performance of simple crosspoint.

Fig. 10
Fig. 10

Two designs for a multimode electooptic compound crosspoint switch: (a) independent gates with open curve; (b) spoiler in curved connecting channel.

Fig. 11
Fig. 11

Compound crosspoint device.

Fig. 12
Fig. 12

Experimental switching performance of compound crosspoints.

Fig. 13
Fig. 13

Spatial distribution of output light from both channels of compound crosspoint.

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