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The 2-μm fully-etched silicon grating coupler

  • Jiayuan Li
  • , Lu Liu
  • , Wenzhao Sun
  • , Xiang Wen
  • , Ke Xu*
  • , Qinghai Song
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The 2-μm waveband has gained much attention due to its potential applications in data communications and optical sensing. This wavelength range is of particular interests for integrated platform as it is transparent for silicon and is free of two photon absorption. We experimentally demonstrate a 2-μm silicon focusing grating coupler with subwavelength structure. The theoretical coupling efficiency for TM polarization is simulated to be 48% with 10 degrees tilt angle at 1952 nm. The measured peak coupling efficiency is 24.3% with the coupling angle of 11°. The grating coupler at two micron spectral band provides an efficient interface between the light source and the 2-μm photonic integrated circuits.

Original languageEnglish
Title of host publicationConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781509062904
StatePublished - 2017
Externally publishedYes
EventConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 - Singapore, Singapore
Duration: 31 Jul 20174 Aug 2017

Publication series

NameOptics InfoBase Conference Papers
VolumePart F122-CLEOPR 2017
ISSN (Electronic)2162-2701

Conference

ConferenceConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017
Country/TerritorySingapore
CitySingapore
Period31/07/174/08/17

Keywords

  • Grating coupler
  • Silicon photonics
  • Two micron band

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