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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 3 — Mar. 1, 2008
  • pp: 351–360

Efficient all-optical dual-channel switches, logic gates, half-adder, and half-subtracter in a one-dimensional photonic heterostructure

Hui Zou, Guan-Quan Liang, and He-Zhou Wang  »View Author Affiliations


JOSA B, Vol. 25, Issue 3, pp. 351-360 (2008)
http://dx.doi.org/10.1364/JOSAB.25.000351


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Abstract

We have proposed a kind of one-dimensional photonic heterostructure for efficient all-optical dual-channel switches, logic gates, half-adder, and half-subtracter, based on the combined usage of two high-quality and one low-quality resonant modes with their electric fields strongly enhanced in the same defect regions. By exciting the low-quality modes with a low-intensity pump beam, one can efficiently shift the spectral positions of two high-quality modes and thus simultaneously control the propagation of signals at two frequency channels. For an AlGaAs SiO 2 heterostructure with two GaAs defect regions, the peak pump intensity can be lower than 6.2 mW mm 2 . When the frequency of the signal light is properly set relative to the two high-quality modes, its propagation can be logically controlled by pump beams with low intensity on the order of 10 mW mm 2 . Moreover, the frequency interval between the two high-quality modes and that between the high- and low-quality modes are adjustable in a wide range.

© 2008 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(310.6860) Thin films : Thin films, optical properties
(050.5298) Diffraction and gratings : Photonic crystals
(230.3750) Optical devices : Optical logic devices

ToC Category:
Photonic Crystals

History
Original Manuscript: August 20, 2007
Revised Manuscript: December 15, 2007
Manuscript Accepted: January 7, 2008
Published: February 20, 2008

Citation
Hui Zou, Guan-Quan Liang, and He-Zhou Wang, "Efficient all-optical dual-channel switches, logic gates, half-adder, and half-subtracter in a one-dimensional photonic heterostructure," J. Opt. Soc. Am. B 25, 351-360 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-3-351

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