OSA's Digital Library

Optics Letters

Optics Letters


  • Vol. 29, Iss. 23 — Dec. 1, 2004
  • pp: 2779–2781

Photonic logic NOR gate based on two symmetric microring resonators

T. A. Ibrahim, K. Amarnath, L. C. Kuo, R. Grover, V. Van, and P.-T. Ho  »View Author Affiliations

Optics Letters, Vol. 29, Issue 23, pp. 2779-2781 (2004)

View Full Text Article

Acrobat PDF (976 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We demonstrate an all-optical NOR logic gate based on symmetric GaAs–AlGaAs microring resonators whose resonances are closely matched. Two input pump data streams are tuned close to one resonance of the symmetric microrings to switch a probe beam tuned to another resonance by two-photon absorption. The switching energy of the gate is 20 pJ/pulse, and the switching window is 40 ps, limited by the carrier lifetime. The use of two rings provides for better cascading in photonic logic circuits because of the higher number of available ports.

© 2004 Optical Society of America

OCIS Codes
(130.3750) Integrated optics : Optical logic devices
(190.4180) Nonlinear optics : Multiphoton processes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(200.4660) Optics in computing : Optical logic
(230.4320) Optical devices : Nonlinear optical devices

T. A. Ibrahim, K. Amarnath, L. C. Kuo, R. Grover, V. Van, and P.-T. Ho, "Photonic logic NOR gate based on two symmetric microring resonators," Opt. Lett. 29, 2779-2781 (2004)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. S. D. Smith, Appl. Opt. 25, 1550 (1986).
  2. R. Grover, T. A. Ibrahim, T. N. Ding, Y. Leng, L.-C. Kuo, S. Kanakaraju, K. Amarnath, L. C. Calhoun, and P.-T. Ho, IEEE Photon. Technol. Lett. 15, 1082 (2003).
  3. J. E. Heebner and R. W. Boyd, Opt. Lett. 24, 847 (1999).
  4. V. Van, T. A. Ibrahim, P. P. Absil, F. G. Johnson, R. Grover, and P.-T. Ho, IEEE J. Sel. Top. Quantum Electron. 8, 705 (2002).
  5. T. A. Ibrahim, R. Grover, L.-C. Kuo, S. Kanakaraju, L. C. Calhoun, and P.-T. Ho, IEEE Photon. Technol. Lett. 15, 1422 (2003).
  6. P. P. Absil, J. V. Hryniewicz, B. E. Little, F. G. Johnson, K. J. Ritter, and P.-T. Ho, IEEE Photon. Technol. Lett. 13, 49 (2001).
  7. J. H. Bechtel and W. L. Smith, Phys. Rev. B 13, 3515 (1976).
  8. T. A. Ibrahim, W. Cao, Y. Kim, J. Li, J. Goldhar, P.-T. Ho, and C. H. Lee, IEEE Photon. Technol. Lett. 15, 36 (2003).
  9. T. A. Ibrahim, “Nonlinear optical microring resonators,” Ph.D. dissertation (University of Maryland, College Park, Md., 2003).
  10. B. R. Bennett, R. A. Soref, and J. A. Del Alamo, IEEE J. Quantum Electron. 26, 113 (1990).

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.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited