Sub-decibel off-chip fiber couplers based on L-shaped waveguides and subwavelength grating metamaterials

D. Benedikovic; C. Alonso-Ramos; S. Guerber; D Pérez-Galacho; X. Le Roux; V Vakarin; G. Marcaud; P Cheben; D. Marris-Morini; E. Cassan; C Baudot; F Boeuf; L Vivien

doi:10.1109/GROUP4.2019.8926025

Conference papers

Sub-decibel off-chip fiber couplers based on L-shaped waveguides and subwavelength grating metamaterials

D. Benedikovic ¹ C. Alonso-Ramos ¹ S. Guerber ^{2, 1, 3} D Pérez-Galacho ^{1, 4} X. Le Roux ¹ V Vakarin ¹ G. Marcaud ¹ P Cheben ⁵ D. Marris-Morini ^{6, 1} E. Cassan ^{6, 1} C Baudot ³ F Boeuf ¹ L Vivien ¹

1 C2N (UMR_9001) - Centre de Nanosciences et Nanotechnologies

2 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information

3 ST-CROLLES - STMicroelectronics [Crolles]

4 UPV - Universitat Politècnica de València

5 NRC - National Research Council of Canada

6 IEF - Institut d'électronique fondamentale

Abstract : Uniform grating couplers based on versatile L-shaped waveguides are experimentally demonstrated, with coupling loss of-2.7 dB and back-reflections of-20 dB. Apodized couplers with subwavelength-grating metamaterials predict improved fiber-chip coupling down to-0.46 dB within device layouts compatible with lithographic technologies available in nanophotonic foundries.

Keywords : silicon nanophotonics sub-wavelength grating metamaterials silicon-on-insulator grating couplers deep- ultraviolet technology mass-scale production

Document type :

Conference papers

Domain :

Engineering Sciences [physics] / Optics / Photonic

Engineering Sciences [physics] / Micro and nanotechnologies/Microelectronics

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Submitted on : Friday, April 10, 2020 - 11:02:15 AM
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Sub-decibel off-chip fiber couplers based on L-shaped waveguides and subwavelength grating metamaterials

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Sub-decibel off-chip fiber couplers based on L-shaped waveguides and subwavelength grating metamaterials

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