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Polymeric buried core adiabatic optical spot-size transformer

Polymeric buried core adiabatic optical spot-size transformer

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Design, fabrication and characterisation of a polymeric optical spot-size transformer formed by a laterally tapered, buried core is described. Only standard photolithography and dry etching have been used to fabricate this transformer. A fibre to waveguide insertion loss of 0.7 dB has been measured, compared to 2.5 dB without the transformer.


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      • R. Zengerle , H.J. Bruckner , H.W.P. Koops , H.J. Olzhausen , G. Zensch . Fabrication of optical beamwidth transformers for guided waves on InP using wedge-shaped taper structures. J. Vacuum Sci. Technol. B , 6 , 3459 - 3463
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