Topology optimised broadband photonic crystal Y-splitter
- 1 January 2005
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 41 (2), 69-71
- https://doi.org/10.1049/el:20057717
Abstract
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.Keywords
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