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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 17 — Aug. 23, 2004
  • pp: 4013–4018

Unidirectional complex gratings assisted couplers

Maxim Greenberg and Meir Orenstein  »View Author Affiliations

Optics Express, Vol. 12, Issue 17, pp. 4013-4018 (2004)

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We present a novel concept which enables the realization of unidirectional and irreversible grating assisted couplers by using gain-loss modulated medium to eliminate the reversibility. Employing a matched periodic modulation of both refractive index and loss (gain) we achieve a unidirectional energy transfer between the modes of the coupler which translates to light transmission from one waveguide to another while disabling the inverse transmission. The importance of self coupling coefficients is explored as well and a feasible implementation, where the real and imaginary perturbations are implemented in different waveguides is presented.

© 2004 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.3120) Integrated optics : Integrated optics devices
(250.4480) Optoelectronics : Optical amplifiers

ToC Category:
Research Papers

Original Manuscript: July 27, 2004
Revised Manuscript: August 11, 2004
Published: August 23, 2004

Maxim Greenberg and Meir Orenstein, "Unidirectional complex grating assisted couplers," Opt. Express 12, 4013-4018 (2004)

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