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Optics Letters

Optics Letters


  • Vol. 23, Iss. 23 — Dec. 1, 1998
  • pp: 1855–1857

Elimination of cross talk in waveguide intersections

Steven G. Johnson, Christina Manolatou, Shanhui Fan, Pierre R. Villeneuve, J. D. Joannopoulos, and H. A. Haus  »View Author Affiliations

Optics Letters, Vol. 23, Issue 23, pp. 1855-1857 (1998)

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We present general criteria for crossing perpendicular waveguides with nearly 100% throughput and 0% cross talk. Our design applies even when the waveguide width is of the order of the wavelength. The theoretical basis for this phenomenon is explained in terms of symmetry considerations and resonant tunneling and is then illustrated with numerical simulations for both a two-dimensional photonic crystal and a conventional high-index-contrast waveguide crossing. Cross-talk reduction by up to 8 orders of magnitude is achieved relative to unmodified crossings.

© 1998 Optical Society of America

OCIS Codes
(130.1750) Integrated optics : Components
(130.3120) Integrated optics : Integrated optics devices
(230.3120) Optical devices : Integrated optics devices
(230.3990) Optical devices : Micro-optical devices
(230.7370) Optical devices : Waveguides

Steven G. Johnson, Christina Manolatou, Shanhui Fan, Pierre R. Villeneuve, J. D. Joannopoulos, and H. A. Haus, "Elimination of cross talk in waveguide intersections," Opt. Lett. 23, 1855-1857 (1998)

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  9. See, e.g., H. A. Haus and Y. Lai, IEEE J. Quantum Electron. 28, 205 (1992).

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