Abstract

Writing waveguides with femtosecond laser is a very promising technique and has already proven its performance in glasses and crystals. At the same time, writing waveguides in polymers is a just developing field, and not too much work has been reported so far. Polymer material can offer the potential to create low-cost and complex structures inside the volume of the material. Singlemode waveguides with propagation losses of 0.6 µm are achieved by putting modifications, done by femtosecond laser, around waveguide core forming different geometries.

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