Low-loss interconnection between electrooptic and passive polymer waveguides with a vertical taper

Min-Cheol Oh, Cheng Zhang, Hyung-Jong Lee, W.H. Steier, H.R. Fetterman
2002 IEEE Photonics Technology Letters  
To enable the hybrid integration of the electrooptic (EO) polymer and the low-loss passive waveguides, a low-loss interconnection between the two waveguides is demonstrated based upon an adiabatic coupling in a vertically tapered waveguide. Fluorinated passive polymers incorporated in this device exhibits 0.35 dB/cm of propagation loss, and the EO polymer has an EO coefficient of 35 pm/V and a high thermal stability with a glass transition temperature of 200 C. According to a beam propagation
more » ... beam propagation method simulation, the interconnection loss could be negligible if the taper length is longer than 300 m. From the fabricated device, an interconnection loss of 0.4 dB is demonstrated by the cutback measurement of the waveguide loss.
doi:10.1109/lpt.2002.1021989 fatcat:dfodwvezzfgrlie4cs7mduhqaq