Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Colorless grating couplers realized by interleaving dispersion engineered subwavelength structures

Not Accessible

Your library or personal account may give you access

Abstract

We investigate the waveguide dispersion of subwavelength structures, and propose that the waveguide dispersion can be reduced by reducing the period of subwavelength structures. A 3 dB bandwidth increment of 20% has been observed by introducing this concept into previously demonstrated grating couplers. To fully exploit the bandwidth merits of the structures, gratings with interleaved subwavelength structures were designed and fabricated. Two typical types of interleaving geometries have been investigated. Both demonstrated a 1 dB bandwidth 70nm, a 3 dB bandwidth 117nm, and a peak efficiency 5.1dB at 1570 nm for transverse-electric polarized light. The simulation confirms that the dispersion engineering adds an extra 12 nm to the 1 dB bandwidth.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
High-directionality fiber-chip grating coupler with interleaved trenches and subwavelength index-matching structure

Daniel Benedikovic, Carlos Alonso-Ramos, Pavel Cheben, Jens H. Schmid, Shurui Wang, Dan-Xia Xu, Jean Lapointe, Siegfried Janz, Robert Halir, Alejandro Ortega-Moñux, J. Gonzalo Wangüemert-Pérez, Iñigo Molina-Fernández, Jean-Marc Fédéli, Laurent Vivien, and Milan Dado
Opt. Lett. 40(18) 4190-4193 (2015)

Continuously apodized fiber-to-chip surface grating coupler with refractive index engineered subwavelength structure

R. Halir, P. Cheben, J. H. Schmid, R. Ma, D. Bedard, S. Janz, D.-X. Xu, A. Densmore, J. Lapointe, and Í. Molina-Fernández
Opt. Lett. 35(19) 3243-3245 (2010)

Colorless directional coupler with dispersion engineered sub-wavelength structure

R. Halir, A. Maese-Novo, A. Ortega-Moñux, I. Molina-Fernández, J. G. Wangüemert-Pérez, P. Cheben, D.-X. Xu, J. H. Schmid, and S. Janz
Opt. Express 20(12) 13470-13477 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved