Abstract

A two-section integrated acousto-optic tunable filter with significantly reduced sidelobes has been fabricated. The sidelobe reduction was achieved with birefringence apodization in the form of variable-width Ti-stripe waveguides. The design and fabrication of the device, which includes integrated proton-exchanged TE and TM-pass polarizers, are described. Experimental tuning curves for each filter section and the overall device are presented and compared with calculated results. The largest sidelobes were found to be 24 dB below the peak transmission, which represents a 5.3-dB improvement over an ideal filter without birefringence apodization. The FWHM of the filter is 1.36 nm, which is only 16% larger than predicted for its interaction length of 17 mm/section.

© 1993 Optical Society of America

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  1. S. E. Harris, R. W. Wallace, J. Opt. Soc. Am. 59, 744 (1969).
    [CrossRef]
  2. D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 898 (1989).
    [CrossRef]
  3. H. Hermann, P. Müller-Reich, V. Reimann, R. Ricken, H. Seibert, W. Sohler, Electron. Lett. 28, 642 (1992).
    [CrossRef]
  4. A. Kar-Roy, C. S. Tsai, in Integrated Photonics Research, Vol. 10 of 1992 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1992), p. 90.
  5. D. A. Smith, J. J. Johnson, IEEE Photon. Technol. Lett. 3, 923 (1991).
    [CrossRef]
  6. W. R. Trutna, D. W. Dolfi, C. A. Flory, Opt. Lett. 18, 28 (1993).
    [CrossRef] [PubMed]
  7. D. A. Smith, A. d’Alessandro, J. E. Braun, H. Herrmann, Appl. Phys. Lett. 62, 814 (1993).
    [CrossRef]
  8. T. Findakly, B. Chen, Electron. Lett. 20, 128 (1984).
    [CrossRef]

1993

D. A. Smith, A. d’Alessandro, J. E. Braun, H. Herrmann, Appl. Phys. Lett. 62, 814 (1993).
[CrossRef]

W. R. Trutna, D. W. Dolfi, C. A. Flory, Opt. Lett. 18, 28 (1993).
[CrossRef] [PubMed]

1992

H. Hermann, P. Müller-Reich, V. Reimann, R. Ricken, H. Seibert, W. Sohler, Electron. Lett. 28, 642 (1992).
[CrossRef]

1991

D. A. Smith, J. J. Johnson, IEEE Photon. Technol. Lett. 3, 923 (1991).
[CrossRef]

1989

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 898 (1989).
[CrossRef]

1984

T. Findakly, B. Chen, Electron. Lett. 20, 128 (1984).
[CrossRef]

1969

Baran, J. E.

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 898 (1989).
[CrossRef]

Braun, J. E.

D. A. Smith, A. d’Alessandro, J. E. Braun, H. Herrmann, Appl. Phys. Lett. 62, 814 (1993).
[CrossRef]

Chen, B.

T. Findakly, B. Chen, Electron. Lett. 20, 128 (1984).
[CrossRef]

Cheung, K.-W.

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 898 (1989).
[CrossRef]

d’Alessandro, A.

D. A. Smith, A. d’Alessandro, J. E. Braun, H. Herrmann, Appl. Phys. Lett. 62, 814 (1993).
[CrossRef]

Dolfi, D. W.

Findakly, T.

T. Findakly, B. Chen, Electron. Lett. 20, 128 (1984).
[CrossRef]

Flory, C. A.

Harris, S. E.

Heffner, B. L.

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 898 (1989).
[CrossRef]

Hermann, H.

H. Hermann, P. Müller-Reich, V. Reimann, R. Ricken, H. Seibert, W. Sohler, Electron. Lett. 28, 642 (1992).
[CrossRef]

Herrmann, H.

D. A. Smith, A. d’Alessandro, J. E. Braun, H. Herrmann, Appl. Phys. Lett. 62, 814 (1993).
[CrossRef]

Johnson, J. J.

D. A. Smith, J. J. Johnson, IEEE Photon. Technol. Lett. 3, 923 (1991).
[CrossRef]

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 898 (1989).
[CrossRef]

Kar-Roy, A.

A. Kar-Roy, C. S. Tsai, in Integrated Photonics Research, Vol. 10 of 1992 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1992), p. 90.

Müller-Reich, P.

H. Hermann, P. Müller-Reich, V. Reimann, R. Ricken, H. Seibert, W. Sohler, Electron. Lett. 28, 642 (1992).
[CrossRef]

Reimann, V.

H. Hermann, P. Müller-Reich, V. Reimann, R. Ricken, H. Seibert, W. Sohler, Electron. Lett. 28, 642 (1992).
[CrossRef]

Ricken, R.

H. Hermann, P. Müller-Reich, V. Reimann, R. Ricken, H. Seibert, W. Sohler, Electron. Lett. 28, 642 (1992).
[CrossRef]

Seibert, H.

H. Hermann, P. Müller-Reich, V. Reimann, R. Ricken, H. Seibert, W. Sohler, Electron. Lett. 28, 642 (1992).
[CrossRef]

Smith, D. A.

D. A. Smith, A. d’Alessandro, J. E. Braun, H. Herrmann, Appl. Phys. Lett. 62, 814 (1993).
[CrossRef]

D. A. Smith, J. J. Johnson, IEEE Photon. Technol. Lett. 3, 923 (1991).
[CrossRef]

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 898 (1989).
[CrossRef]

Sohler, W.

H. Hermann, P. Müller-Reich, V. Reimann, R. Ricken, H. Seibert, W. Sohler, Electron. Lett. 28, 642 (1992).
[CrossRef]

Trutna, W. R.

Tsai, C. S.

A. Kar-Roy, C. S. Tsai, in Integrated Photonics Research, Vol. 10 of 1992 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1992), p. 90.

Wallace, R. W.

Appl. Phys. Lett.

D. A. Smith, A. d’Alessandro, J. E. Braun, H. Herrmann, Appl. Phys. Lett. 62, 814 (1993).
[CrossRef]

Electron. Lett.

T. Findakly, B. Chen, Electron. Lett. 20, 128 (1984).
[CrossRef]

D. A. Smith, J. J. Johnson, B. L. Heffner, K.-W. Cheung, J. E. Baran, Electron. Lett. 25, 898 (1989).
[CrossRef]

H. Hermann, P. Müller-Reich, V. Reimann, R. Ricken, H. Seibert, W. Sohler, Electron. Lett. 28, 642 (1992).
[CrossRef]

IEEE Photon. Technol. Lett.

D. A. Smith, J. J. Johnson, IEEE Photon. Technol. Lett. 3, 923 (1991).
[CrossRef]

J. Opt. Soc. Am.

Opt. Lett.

Other

A. Kar-Roy, C. S. Tsai, in Integrated Photonics Research, Vol. 10 of 1992 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1992), p. 90.

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Figures (3)

Fig. 1
Fig. 1

Top: Two-section acousto-optic filter with integrated polarizers. SAW, surface acoustic wave. Bottom: Ti-diffused waveguide width in each section as a function of length.

Fig. 2
Fig. 2

Measured tuning curve (crosses) of each section of the birefringence apodized device compared with theory (solid curve) for the variable-width waveguide with discrete step width. The wavelength is fixed at 1.55 μm, and acoustic drive frequency is varied. Top, first-section response; bottom, second-section response.

Fig. 3
Fig. 3

Comparison of the measured tuning curve (crosses) of a two-section birefringence apodized device with theory (solid curve) for the variable-width waveguide with discrete step width. The dashed line indicates minimum sidelobe levels possible with a two-section uniform interaction device. The wavelength is fixed at 1.55 μm, and acoustic drive frequency is varied. The FWHM of measured data is 152 kHz, corresponding to 1.36 nm in wavelength.

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