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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 22 — Oct. 25, 2010
  • pp: 23183–23195

Proposal and analysis of narrow band transmission asymmetric directional couplers with Bragg grating induced phase matching

Kamal Muhieddine, Anatole Lupu, Eric Cassan, and Jean-Michel Lourtioz  »View Author Affiliations


Optics Express, Vol. 18, Issue 22, pp. 23183-23195 (2010)
http://dx.doi.org/10.1364/OE.18.023183


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Abstract

This paper addresses the design of narrow band transmission co-directional couplers suitable for wavelength division multiplexing applications. The originality of the proposed asymmetric two-waveguide configuration stems from the use of Bragg gratings operated near band gap to simultaneously achieve high wavelength dispersion and selectivity as well as co-directional phase matching between guides which would be mismatched otherwise. Our theoretical analysis reveals the existence of a minimum Bragg grating coupling strength for co-directional phase matching. The threshold condition is analytically determined, and a coupled mode theory (CMT) four-wave model is successfully applied to describe the behavior of the investigated device. A numerical validation of CMT results is reported in the case of slab waveguides with Bragg grating assisted coupling. The proposed design is shown to be compatible with existing micro-nano-fabrication technology.

© 2010 OSA

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices

ToC Category:
Integrated Optics

History
Original Manuscript: August 11, 2010
Revised Manuscript: September 30, 2010
Manuscript Accepted: October 10, 2010
Published: October 19, 2010

Citation
Kamal Muhieddine, Anatole Lupu, Eric Cassan, and Jean-Michel Lourtioz, "Proposal and analysis of narrow band transmission asymmetric directional couplers with Bragg grating induced phase matching," Opt. Express 18, 23183-23195 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-22-23183


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