Efficient polarization diversity grating couplers in bonded InP-membrane

Frederik Van Laere, Tiziana Stomeo, Dirk Taillaert, Gunther Roelkens, Dries Van Thourbout, Thomas F. Krauss, Roel Baets

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

We report on the design, fabrication, and measurement of compact and efficient grating couplers between fiber and nanophotonic waveguides, in a polarization diversity configuration. This approach allows for polarization-independent integrated circuits. The gratings and waveguides are fabricated in a benzocyclobutene (BCB)-bonded InP-membrane, with high vertical refractive index contrast. The coupling loss of the gratings is -3.3 dB and the measured polarization-dependent loss is 0.79 dB.

Original languageEnglish
Pages (from-to)318-320
Number of pages3
JournalIEEE Photonics Technology Letters
Volume20
DOIs
Publication statusPublished - Jan 2008

Keywords

  • Benzoeyclobutene (BCB)
  • grating couplers
  • InP-membrane
  • polarization diversity
  • NANOPHOTONIC WAVE-GUIDES
  • MODE CONVERSION
  • COMPACT
  • SPLITTER
  • FIBERS

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