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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 30, Iss. 8 — Apr. 15, 2005
  • pp: 845–847

Stratified waveguide grating coupler for normal fiber incidence

Bin Wang, Jianhua Jiang, Diana M. Chambers, Jingbo Cai, and Gregory P. Nordin  »View Author Affiliations


Optics Letters, Vol. 30, Issue 8, pp. 845-847 (2005)
http://dx.doi.org/10.1364/OL.30.000845


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Abstract

We propose a new stratified waveguide grating coupler (SWGC) to couple light from a fiber at normal incidence into a planar waveguide. SWGCs are designed to operate in the strong coupling regime without intermediate optics between the fiber and the waveguide. Two-dimensional finite-difference time-domain simulation in conjunction with microgenetic algorithm optimization shows that ∼72% coupling efficiency is possible for fiber (core size of 8.3 µm and Delta=0.36%) to slab waveguide (1.2-µm core and Delta=3.1%) coupling. We show that the phase-matching and Bragg conditions are simultaneously satisfied through the fundamental leaky mode.

© 2005 Optical Society of America

OCIS Codes
(230.3120) Optical devices : Integrated optics devices
(230.3990) Optical devices : Micro-optical devices
(230.7370) Optical devices : Waveguides
(250.5300) Optoelectronics : Photonic integrated circuits

Citation
Bin Wang, Jianhua Jiang, Diana M. Chambers, Jingbo Cai, and Gregory P. Nordin, "Stratified waveguide grating coupler for normal fiber incidence," Opt. Lett. 30, 845-847 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-8-845


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References

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