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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 9 — May. 1, 2014
  • pp: 2786–2789

Highly efficient metal grating coupler for membrane-based integrated photonics

V. Dolores-Calzadilla, D. Heiss, and M. Smit  »View Author Affiliations


Optics Letters, Vol. 39, Issue 9, pp. 2786-2789 (2014)
http://dx.doi.org/10.1364/OL.39.002786


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Abstract

We present the design of a metal grating coupler compatible with membrane photonic circuit platforms, consisting of a buried metal grating and a metal mirror. A nonapodized design provides a fiber-to-chip coupling efficiency at 1.55 μm up to 73%, whereas apodized designs show theoretical efficiencies as high as 89%, with a 3 dB bandwidth of 61 and 78 nm, respectively. An important advantage is that the coupling efficiency is independent from the underlying layer stack, enabling its use in diverse applications. For example, a thin buffer layer is required to achieve optical coupling for the heterogeneous integration of III–V and silicon photonics, whereas a thick buffer is of interest for thermal isolation between photonic membranes and CMOS circuits.

© 2014 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.3120) Integrated optics : Integrated optics devices

ToC Category:
Integrated Optics

History
Original Manuscript: March 4, 2014
Revised Manuscript: April 2, 2014
Manuscript Accepted: April 2, 2014
Published: April 30, 2014

Citation
V. Dolores-Calzadilla, D. Heiss, and M. Smit, "Highly efficient metal grating coupler for membrane-based integrated photonics," Opt. Lett. 39, 2786-2789 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-9-2786

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