UV-photosensitivity and refractive index engineering in silica-based planar lightwave circuits
2005 (English)In: 2005 7th International Conference on Transparent Optical Networks, Vol 1, Proceedings, 2005, 343-348 p.Conference paper (Refereed)
Similarly to optical fibers silica-based planar waveguides can exhibit the property of photosensitivity when illuminated with UV light. UV-induced changes of refractive index in Ge-doped silica allow for adding new functionality to these components including wavelength filtering with help of Bragg gratings, phase adjustment, wavelength tuning, direct UV-writing of waveguides and birefringence compensation. Bragg gratings imprinted in waveguide core in the same way as done in fibers, allow for building demultiplexers, add-drop filters, dispersion compensators, frequency lockers and other grating assisted devices. In this paper we present the background of the photosensitivity in germanosilica, methods for its improvement as well as technology for fabrication of advanced low dispersion Bragg gratings for 40 Gbps and beyond. We also demonstrate some fabricated wavelength selective devices for WDM communication systems.
Place, publisher, year, edition, pages
2005. 343-348 p.
silica-on-silicon technology, planar lightwave circuit, photonic integrated circuits, UV Bragg gratings, multi/demultiplexers, add-drop filters
IdentifiersURN: urn:nbn:se:kth:diva-43360DOI: 10.1109/ICTON.2005.1505819ISI: 000234111300079ScopusID: 2-s2.0-33745697776ISBN: 0-7803-9236-1OAI: oai:DiVA.org:kth-43360DiVA: diva2:448211
7th International Conference on Transparent Optical Networks Location: Barcelona, SPAIN Date: JUL 03-07, 2005
QC 201110142011-10-142011-10-142011-10-14Bibliographically approved