Waveguide mode filter fabricated using laser-induced forward transfer

Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK.
Optics Express (Impact Factor: 3.49). 05/2011; 19(10):9814-9. DOI: 10.1364/OE.19.009814
Source: PubMed


Titanium (Ti)-in-diffused lithium niobate waveguide mode filters fabricated using laser-induced forward transfer followed by thermal diffusion are presented. The mode control was achieved by adjusting the separation between adjacent Ti segments thus varying the average value of the refractive index along the length of the in-diffused channel waveguides. The fabrication details, loss measurements and near-field optical characterization of the mode filters are presented. Modeling results regarding the device performance are also discussed.

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