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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 6 — Mar. 15, 2011
  • pp: 837–839

Compact double-layer subwavelength binary blazed grating 1 × 4 splitter based on silicon-on-insulator

Junbo Yang, Zhiping Zhou, XinJun Wang, Danhua Wu, Huaxiang Yi, JianKun Yang, and Wei Zhou  »View Author Affiliations


Optics Letters, Vol. 36, Issue 6, pp. 837-839 (2011)
http://dx.doi.org/10.1364/OL.36.000837


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Abstract

We describe a compact double-layer waveguide grating splitter that not only achieves efficient coupling between single mode fiber and a silicon-on-insulator optical waveguide but also realizes effective splitting. By appropriate choice of waveguide/grating parameters, including thicknesses, periods, height, and fill factor to optimize the mode matching, coupling efficiency is improved and the value of power difference of each output port is also significantly decreased. The maximum of power difference between four output ports is about 6.2%; however, the minimum value is only 0.6% or so. Moreover, the average power difference of four output ports is lower than 10% for TE polarization light over the 10 nm wavelength bandwidth centered at 1.54 μm . In addition, the splitter structure has the best tolerance for grating fabrication with deviations of grating depth 90 nm .

© 2011 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(130.0130) Integrated optics : Integrated optics
(230.1360) Optical devices : Beam splitters

ToC Category:
Integrated Optics

History
Original Manuscript: October 13, 2010
Revised Manuscript: December 26, 2010
Manuscript Accepted: January 3, 2011
Published: March 9, 2011

Citation
Junbo Yang, Zhiping Zhou, XinJun Wang, Danhua Wu, Huaxiang Yi, JianKun Yang, and Wei Zhou, "Compact double-layer subwavelength binary blazed grating 1×4 splitter based on silicon-on-insulator," Opt. Lett. 36, 837-839 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-6-837

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