Toolkit for photonic integrated circuits based on inverted rib waveguides

Kapil Debnath, Rowan Moore, Alexandros Liles, Liam O'Faolain

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
3 Downloads (Pure)


We have performed an exploration of inverted rib waveguide platform for use in optical backplanes. This entailed the design, optimization, and characterization of a variety of passive optical components that may serve as a basis for the functions required of an on-chip optical networks. The presented design introduces an inverted-rib template, which consists of a polymer waveguide layer. We have successfully fabricated and demonstrated low-loss waveguides, and also functional passive devices such as directional couplers, multimode interferometers, waveguide bends and crossings, and distributed Bragg reflectors. We also demonstrate a way of coupling active components (e.g., in silicon) to such a photonic integrated circuit.

Original languageEnglish
Pages (from-to)4145-4150
Number of pages6
JournalJournal of Lightwave Technology
Issue number19
Early online date7 Aug 2015
Publication statusPublished - 1 Oct 2015


  • Optical backplane
  • Opto-electronic integration
  • Passive optical components
  • Polymer waveguide


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