Systematic design of slow-light photonic waveguides

René Matzen, Jakob Søndergaard Jensen, Ole Sigmund

Research output: Contribution to journalJournal articleResearchpeer-review

593 Downloads (Pure)


A pulse-delaying optimization scheme based on topology optimization for transient response of photonic crystal structures (PhCs) is formulated to obtain slow-light devices. The optimization process is started from a qualified W1 PhC waveguide design with group index ng≈40 obtained from a simple Edisonian parameter search. Based on this, the proposed pulse delaying and subsequent pulse restoring strategies yield a design that increases the group index by 75% to ng≈70±10% for an operational full-width at half-maximum (FWHM) bandwidth BFWHM=6 nm, and simultaneously minimizes interface penalty losses between the access ridge and the W1 PhC waveguide. To retain periodicity and symmetry, the active design set is limited to the in-/outlet region and a distributed supercell, and manufacturability is further enhanced by density filtering techniques combined with material phase projections.
Original languageEnglish
JournalOptical Society of America. Journal B: Optical Physics
Issue number10
Pages (from-to)2374-2382
Publication statusPublished - 2011

Bibliographical note

This paper was published in Optical Society of America. Journal B: Optical Physics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.


Dive into the research topics of 'Systematic design of slow-light photonic waveguides'. Together they form a unique fingerprint.

Cite this