Hybrid III-V on Si grating as a broadband reflector and a high-Q resonator

Il-Sug Chung (Invited author), Alireza Taghizadeh (Invited author), Gyeong Cheol Park (Invited author)

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Hybrid grating (HG) with a high-refractive-index cap layer added onto a high contrast grating (HCG), can provide a high reflectance close 100 % over a broader wavelength range than HCGs, or work as a ultrahigh quality (Q) factor resonator. The reflection and resonance properties of HGs have been investigated and the mechanisms leading to these properties are discussed. A HG reflector sample integrating a III-V cap layer with InGaAlAs quantum wells onto a Si grating has been fabricated and its reflection property has been characterized. The HG-based lasers have a promising prospect for silicon photonics light source or high-speed laser applications
Original languageEnglish
Title of host publicationProceedings of SPIE
EditorsConnie J. Chang-Hasnain, David Fattal, Fumio Koyama, Weimin Zhou
Number of pages16
PublisherSPIE - International Society for Optical Engineering
Publication date2016
Article number97570A
Publication statusPublished - 2016
EventHigh Contrast Metastructures V - The Moscone Center, San Francisco, California, United States
Duration: 13 Feb 201618 Feb 2016


ConferenceHigh Contrast Metastructures V
LocationThe Moscone Center
Country/TerritoryUnited States
CitySan Francisco, California


  • Silicon photonics
  • HCG
  • Subwavelength grating
  • Hybrid
  • Optical interconnects
  • Optical interconnection


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