Inverse design engineering of all-silicon polarization beam splitters

Lars Hagedorn Frandsen, Ole Sigmund

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

772 Downloads (Pure)

Abstract

Utilizing the inverse design engineering method of topology optimization, we have realized high-performing all-silicon ultra-compact polarization beam splitters. We show that the device footprint of the polarization beam splitter can be as compact as similar to 2 µm2 while performing experimentally with a polarization splitting loss lower than similar to 0.82 dB and an extinction ratio larger than similar to 15 dB in the C-band. We investigate the device performance as a function of the device length and find a lower length above which the performance only increases incrementally. Imposing a minimum feature size constraint in the optimization is shown to affect the performance negatively and reveals the necessity for light to scatter on a sub-wavelength scale to obtain functionalities in compact photonic devices.
Original languageEnglish
Title of host publicationProceedings of SPIE : Photonic and Phononic Properties of Engineered Nanostructures VI
EditorsAli Adibi, Shawn-Yu Lin, Axel Scherer
Number of pages6
Volume9756
PublisherSPIE - International Society for Optical Engineering
Publication date2016
Article number97560Y
ISBN (Electronic)9781628419917
DOIs
Publication statusPublished - 2016
EventPhotonic and Phononic Properties of Engineered Nanostructures VI - The Moscone Cente, San Francisco, CA, United States
Duration: 15 Feb 201618 Feb 2016
https://spie.org/PW16O/conferencedetails/photonic-and-phononic-properties-of-engineered-nanostructures

Conference

ConferencePhotonic and Phononic Properties of Engineered Nanostructures VI
LocationThe Moscone Cente
CountryUnited States
CitySan Francisco, CA
Period15/02/201618/02/2016
Internet address
SeriesProceedings of SPIE, the International Society for Optical Engineering
Number97560Y
Volume9756
ISSN0277-786X

Keywords

  • Silicon photonics
  • Inverse design engineering
  • Topology optimization
  • Polarization beam splitter

Fingerprint Dive into the research topics of 'Inverse design engineering of all-silicon polarization beam splitters'. Together they form a unique fingerprint.

Cite this