Subwavelength-diameter Silica Wire for Light In-coupling to Silicon-based Waveguide
2007 (English)In: Chinese optics letters, ISSN 1671-7694, Vol. 5, no 10, 577-579 p.Article in journal (Refereed) Published
Coupling between subwavelength-diameter silica wires and silicon-based waveguides is studied using the parallel three-dimensional (3D) finite-different time-domain method. Conventional butt-coupling to a silica-substrated silicon wire waveguide gives above 40% transmission at the wavelength range from 1300 to 1750 nm with good robustness against axial misalignments. Slow light can be generated by counter-directional coupling between a silica wire and a two-dimensional (2D) silicon photonic crystal slab waveguide. Through dispersion-band engineering, 82% transmission is achieved over a coupling distance of 50 lattice constants. The group velocity is estimated as 1/35 of the light speed in vacuum.
Place, publisher, year, edition, pages
2007. Vol. 5, no 10, 577-579 p.
Alignment, Finite difference time domain method, Optical waveguides, Parallel algorithms, Silicon, Three dimensional, Axial misalignments, Silicon based waveguides, Subwavelength diameter silica wires
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-8024ISI: 000255024400006ScopusID: 2-s2.0-36248989245OAI: oai:DiVA.org:kth-8024DiVA: diva2:13233
QC 201009232008-02-222008-02-222010-09-23Bibliographically approved