Design and fabrication of micro-structured waveguides in lithium niobate

Sonia Boscolo*, Mykhaylo Dubov

*Corresponding author for this work

Research output: Chapter in Book/Published conference outputConference publication


We review our recent work on the numerical design and optimisation of buried, micro-structured waveguides (WGs) that can be formed in a lithium niobate (LiNbO3) crystal by the method of direct femtosecond laser inscription. We also report on the possibility of fabricating such WGs using a high-repetition-rate, chirped-pulse oscillator system. Refractive index contrasts as high as -0.0127 have been achieved for individual modification tracks. The results pave the way for developing micro-structured WGs with low-loss operation across a wide spectral range, extending into the mid-infrared region up to the end of the transparency range of the host material.

Original languageEnglish
Title of host publicationICTON 2014 : 16th international conference on transparent optical networks
EditorsMarek Jaworski, Marian Marciniak
Place of PublicationWarsaw (PL)
PublisherNational Institute of Telecommunications
Number of pages4
ISBN (Electronic)978-1-4799-5601-2
ISBN (Print)978-1-4799-5600-5
Publication statusPublished - 2014
Event16th International Conference on Transparent Optical Networks - Graz, Austria
Duration: 6 Jul 201410 Jul 2014


Conference16th International Conference on Transparent Optical Networks
Abbreviated titleICTON 2014

Bibliographical note

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Funding: Leverhulme Trust (grant RPG-278) and the Engineering and Physical Sciences Research Council (EPSRC grant EP/J010413/1)


  • integrated optics
  • microstructure fabrication
  • nonlinear optics
  • photonic crystal waveguides


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