Compact efficient broadband grating coupler for silicon-on-insulator waveguides

Abstract

We have designed a high-efficiency broadband grating coupler for coupling between silicon-on-insulator (SOI) waveguides and optical fibers. The grating is only $13 \mathit{\mu }\mathrm{m}$ long and $12 \mathit{\mu }\mathrm{m}$ wide, and the size of the grooves is optimized numerically. For TE polarization the coupling loss to single-mode fiber is below 1 dB over a 35-nm wavelength range when using SOI with a two-pair bottom reflector. The tolerances to fabrication errors are also calculated.

© 2004 Optical Society of America

Efficient, broadband and compact metal grating couplers for silicon-on-insulator waveguides

Stijn Scheerlinck, Jonathan Schrauwen, Frederik Van Laere, Dirk Taillaert, Dries Van Thourhout, and Roel Baets
Opt. Express 15(15) 9625-9630 (2007)

High efficiency Silicon-on-Insulator grating coupler based on a poly-Silicon overlay

Günther Roelkens, Dries Van Thourhout, and Roel Baets
Opt. Express 14(24) 11622-11630 (2006)

Design of a high-efficiency grating coupler based on a silicon nitride overlay for silicon-on-insulator waveguides

Huai-Yi Chen and Kai-Chun Yang
Appl. Opt. 49(33) 6455-6462 (2010)

High-efficiency fiber-to-chip grating couplers realized using an advanced CMOS-compatible Silicon-On-Insulator platform

D. Vermeulen, S. Selvaraja, P. Verheyen, G. Lepage, W. Bogaerts, P. Absil, D. Van Thourhout, and G. Roelkens
Opt. Express 18(17) 18278-18283 (2010)

Subwavelength index engineered surface grating coupler with sub-decibel efficiency for 220-nm silicon-on-insulator waveguides

Daniel Benedikovic, Pavel Cheben, Jens H. Schmid, Dan-Xia Xu, Boris Lamontagne, Shurui Wang, Jean Lapointe, Robert Halir, Alejandro Ortega-Moñux, Siegfried Janz, and Milan Dado
Opt. Express 23(17) 22628-22635 (2015)