Topology Optimised Broadband Photonic Crystal Y-Splitter

Peter Ingo Borel, Lars Hagedorn Frandsen, Anders Harpøth, Martin Kristensen, Jakob Søndergaard Jensen, Ole Sigmund

Research output: Contribution to journalJournal articleResearchpeer-review


A planar photonic crystal waveguide Y-splitter that exhibits large-bandwidth low-loss 3 dB splitting for TE-polarised light has been fabricated in silicon-on-insulator material. The high performance is achieved by utilising topology optimisation to design the Y-junction and by using topology optimised low-loss 60° bends. The average excess loss of the entire component is found to be 0.44±0.29 dB for a 100 nm bandwidth, and the excess loss due to the Y-junction is found to be 0.34±0.30 dB in a 175 nm bandwidth.
Original languageEnglish
JournalElectronics Letters
Issue number2
Pages (from-to)69-71
Publication statusPublished - 2005

Cite this

Borel, P. I., Frandsen, L. H., Harpøth, A., Kristensen, M., Jensen, J. S., & Sigmund, O. (2005). Topology Optimised Broadband Photonic Crystal Y-Splitter. Electronics Letters, 41(2), 69-71.