Abstract

The concept of internal reflectance at grazing incidence has been used to construct functional 4:1 electrooptic multiplexers for multimode single-fiber optical data communication. Individual multiplexer units having insertion losses as low as 10 dB and optical signal-to-crosstalk ratios as high as 15 dB have been fabricated. A complete time division multiplexed optical data link has been assembled using two 4:1 multiplexers. The operation of this link demonstrates the feasibility of optically multiplexing multimode signals and represents a benchmark in the progress to control and route multimode light energy.

© 1978 Optical Society of America

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References

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  1. W. J. Tomlinson, G. D. Aumiller, Appl. Phys. Lett. 31, 169 (1977).
    [CrossRef]
  2. S. E. Miller, T. Li, E. A. J. Marcatili, Proc. IEEE 61, 1726 (1973).
    [CrossRef]
  3. C. R. Patiaul, I. B. Slayton, J. W. Bruce, C. M. Abrahamson, Final Report, contract DAAB07-75-C-0363 for USAECOM, available through NTIS.
  4. A. R. Nelson, D. H. McMahon, R. L. Gravel, Opt. Lett. 1, 35 (1977).
    [CrossRef] [PubMed]
  5. A. R. Nelson, D. H. McMahon, R. L. Gravel, Appl. Phys. Lett. 28, 321 (1976).
    [CrossRef]
  6. R. A. Soref, D. H. McMahon, A. R. Nelson, Appl. Phys. Lett. 28, 716 (1976).
    [CrossRef]
  7. R. A. Soref, A. R. Nelson, Appl. Opt. 16, 3223 (1977).
    [CrossRef] [PubMed]

1977 (3)

1976 (2)

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]

1973 (1)

S. E. Miller, T. Li, E. A. J. Marcatili, Proc. IEEE 61, 1726 (1973).
[CrossRef]

Abrahamson, C. M.

C. R. Patiaul, I. B. Slayton, J. W. Bruce, C. M. Abrahamson, Final Report, contract DAAB07-75-C-0363 for USAECOM, available through NTIS.

Aumiller, G. D.

W. J. Tomlinson, G. D. Aumiller, Appl. Phys. Lett. 31, 169 (1977).
[CrossRef]

Bruce, J. W.

C. R. Patiaul, I. B. Slayton, J. W. Bruce, C. M. Abrahamson, Final Report, contract DAAB07-75-C-0363 for USAECOM, available through NTIS.

Gravel, R. L.

A. R. Nelson, D. H. McMahon, R. L. Gravel, Opt. Lett. 1, 35 (1977).
[CrossRef] [PubMed]

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

Li, T.

S. E. Miller, T. Li, E. A. J. Marcatili, Proc. IEEE 61, 1726 (1973).
[CrossRef]

Marcatili, E. A. J.

S. E. Miller, T. Li, E. A. J. Marcatili, Proc. IEEE 61, 1726 (1973).
[CrossRef]

McMahon, D. H.

A. R. Nelson, D. H. McMahon, R. L. Gravel, Opt. Lett. 1, 35 (1977).
[CrossRef] [PubMed]

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]

Miller, S. E.

S. E. Miller, T. Li, E. A. J. Marcatili, Proc. IEEE 61, 1726 (1973).
[CrossRef]

Nelson, A. R.

A. R. Nelson, D. H. McMahon, R. L. Gravel, Opt. Lett. 1, 35 (1977).
[CrossRef] [PubMed]

R. A. Soref, A. R. Nelson, Appl. Opt. 16, 3223 (1977).
[CrossRef] [PubMed]

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]

Patiaul, C. R.

C. R. Patiaul, I. B. Slayton, J. W. Bruce, C. M. Abrahamson, Final Report, contract DAAB07-75-C-0363 for USAECOM, available through NTIS.

Slayton, I. B.

C. R. Patiaul, I. B. Slayton, J. W. Bruce, C. M. Abrahamson, Final Report, contract DAAB07-75-C-0363 for USAECOM, available through NTIS.

Soref, R. A.

R. A. Soref, A. R. Nelson, Appl. Opt. 16, 3223 (1977).
[CrossRef] [PubMed]

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

Tomlinson, W. J.

W. J. Tomlinson, G. D. Aumiller, Appl. Phys. Lett. 31, 169 (1977).
[CrossRef]

Appl. Opt. (1)

Appl. Phys. Lett. (3)

W. J. Tomlinson, G. D. Aumiller, Appl. Phys. Lett. 31, 169 (1977).
[CrossRef]

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]

Opt. Lett. (1)

Proc. IEEE (1)

S. E. Miller, T. Li, E. A. J. Marcatili, Proc. IEEE 61, 1726 (1973).
[CrossRef]

Other (1)

C. R. Patiaul, I. B. Slayton, J. W. Bruce, C. M. Abrahamson, Final Report, contract DAAB07-75-C-0363 for USAECOM, available through NTIS.

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Figures (15)

Fig. 1
Fig. 1

Electrode design for spoiler multiplexer.

Fig. 2
Fig. 2

Geometric procedure for designing spoiler electrodes.

Fig. 3
Fig. 3

Light output at end of 3.5-cm LiTaO3 crystal for 85-μm core fiber with N.A. = 0.25, threefold collimation, and n = 1.62 antireflection fluid.

Fig. 4
Fig. 4

Computer-generated top pattern for 12:3 multiplexer.

Fig. 5
Fig. 5

Computer-generated bottom pattern for 12:3 multiplexer.

Fig. 6
Fig. 6

Spoiler multiplexer structure with photos to illustrate actual geometry.

Fig. 7
Fig. 7

Typical performance of spoiler multiplexer.

Fig. 8
Fig. 8

12:3 spoiler multiplexer with leads attached.

Fig. 9
Fig. 9

Optical and electrical connections for 12:3 multiplexer.

Fig. 10
Fig. 10

Completed optical fiber termination cut and polished at a 69° angle to obtain a two-fold collimation. Grooves below fibers were made by preferential etching in silicon.

Fig. 11
Fig. 11

Packaged multiplexer (or demultiplexer) unit with input and output fibers. Unit measures 11 × 6 × 3 cm3.

Fig. 12
Fig. 12

Output voltage from four channels of multiplexer driver.

Fig. 13
Fig. 13

Output from channel 4 of demultiplexer obtained by switching high frequency driver between −350 V and +50 V. Optical input to multiplexer is a 32-kHz square wave light pulse train. Outputs from remaining three channels are similar except for time displacement of pulses.

Fig. 14
Fig. 14

Complete optical multiplexed data link.

Fig. 15
Fig. 15

Optical output from channels 1–4 of demultiplexer using completed link with a 32-kHz optical signal coupled into channel 2 input fiber only.

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