OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 72, Iss. 7 — Jul. 1, 1982
  • pp: 835–838

Tunable nonlinear directional coupler

Dror Sarid and Murray Sargent III  »View Author Affiliations

JOSA, Vol. 72, Issue 7, pp. 835-838 (1982)

View Full Text Article

Acrobat PDF (412 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We analyze the operation of a tunable device that is composed of two channel waveguides that are fabricated on a nonlinear substrate and of two adjacent electrodes, where the evanescent fields of the two guided modes overlap. The optical power-dependent propagation constant of the guided modes is modified locally as the power leaks from one channel waveguide to the other, resulting in a continuous change in the local phase matching. We present a general expression for the operation of the device together with a numerical example that demonstrates that the device acts as an all-optical gate, discriminator, and limiter, having a speed that is limited only by the transit time along the channels and the response time of the material.

© 1982 Optical Society of America

Dror Sarid and Murray Sargent III, "Tunable nonlinear directional coupler," J. Opt. Soc. Am. 72, 835-838 (1982)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. E. A. Marcatili, "Dielectric rectangular waveguides and directional couplers for integrated optics," Bell Syst. Tech. J. 48, 2071–2102 (1969).
  2. S. Kurazono, K. Iwasaki, and N. Kumagi, "A new optical modulator consisting of coupled optical waveguides," J. Instr. Electr. Commun. Eng. Jpn. 55C, 103–105 (1972).
  3. P. S. Cross, R. V. Schmidt, R. L. Thornton, and P. W. Smith, "Optically controlled two channel integrated-optical switch," IEEE J. Quantum Electron. QE-14, 557–580 (1978).
  4. A. Schnapper, M. Papuchon, and C. Puech, "Optical bistability using an integrated two arm interferometer," Opt. Commun. 29, 364–368 (1979).
  5. E. A. J. Marcatili, "Optical subpicosecond gate," Appl. Opt. 19, 1468–1476 (1980).
  6. H. A. Haus, S. T. Kirsch, K. Mathyssek, and F. J. Leonberger, "Picosecond optical sampling," IEEE J Quantum Electron. QE-16, 870–873 (1980).
  7. H. F. Taylor, "Frequency selective coupling in parallel dielectric waveguides," Opt. Common. 8, 421–425 (1973).
  8. H. Kogelnik and R. V. Schmidt, "Switched directional coupler with alternating Δβ," IEEE J. Quantum Electron. QE-12, 396–401 (1976).
  9. R. C. Alferness and R. V. Schmidt, "Tunable optical waveguide directional coupler filter," Appl. Phys. Lett. 33, 161–163 (1978).
  10. S. Tarucha, M. Minakata, and J. Noda, "Complementary optical bistable switching and triode operation using LiNbO3 directional coupler," IEEE J. Quantum Electron. QE-17, 321–324 (1981).
  11. H. Ito, Y. Ogawa, and H. Inaba, "Analysis and experiments on integrated optical multivibrators using electrooptically controlled bistable optical devices," IEEE J. Quantum Electron. QE-17, 325–331 (1981).
  12. H. M. Gibbs, S. L. McCall, and T. N. C. Venkatesan, "Differential gain and bistability using a sodium-filled Fabry-Perot interferometer," Appl. Phys. Lett. 36, 1135–1138 (1976).
  13. S. M. Jensen, "An optical logic element and its use in optical logic circuits," presented at the workshop on All-Optical Processing Elements in Integrated Optics, September 17–18, 1981.
  14. D. Sarid, "Power-dependent refractive-index phenomena in optical waveguides," Proc. Soc. Photo-Opt. Instrum. Eng. 317, 1981 (to be published).
  15. D. Sarid, "Analysis of bistability in a ring-channel waveguide," Opt. Lett. 6, 552–553 (1981).
  16. See, for example, Tao-yi Fu and Murray Sargent III, "Effects of signal detuning on phase conjugation," Opt. Lett. 4, 366–368 (1979).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited