Affiliations 

  • 1 Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC 3010, Australia. m.asaduzzaman@student.unimelb.edu.au
  • 2 Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
Sci Rep, 2018 02 07;8(1):2540.
PMID: 29416080 DOI: 10.1038/s41598-018-20875-3

Abstract

A new compact silicon grating coupler enabling fibre-to-chip light coupling at a minimized taper length is proposed. The proposed coupler, which incorporates a hollow tapered waveguide, converts the spot-size of optical modes from micro- to nano-scales by reducing the lateral dimension from 15 µm to 300 nm at a length equals to 60 µm. The incorporation of such a coupler in photonic integrated circuit causes a physical footprint as small as 81 µm × 15 µm with coupling efficiency and 3-dB coupling bandwidth as high as 72% and 69 nm respectively.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.