Title :
Low-loss interconnection between electrooptic and passive polymer waveguides with a vertical taper
Author :
Min-Cheol Oh ; Cheng Zhang ; Hyung-Jong Lee ; Steier, W.H. ; Fetterman, H.R.
Author_Institution :
Pacific Wave Industries, Los Angeles, CA, USA
Abstract :
To enable the hybrid integration of electrooptic (EO) polymer and low-loss passive waveguides, a low-loss interconnection between the two waveguides is demonstrated based upon adiabatic coupling in a vertically tapered waveguide. Fluorinated passive polymers incorporated in this device exhibit 0.35 dB/cm of propagation loss, and the EO polymer has an EO coefficient of 35 pm/V and high thermal stability with a glass transition temperature of 200/spl deg/C. According to a beam propagation method simulation, the interconnection loss could be negligible if the taper length is longer than 300 μm. From the fabricated device, an interconnection loss of 0.4 dB is demonstrated by cutback measurement of the waveguide loss.
Keywords :
electro-optical modulation; integrated optics; optical interconnections; optical losses; optical planar waveguides; optical polymers; 0.4 dB; 300 micron; adiabatic coupling; beam propagation method simulation; cutback measurement; electrooptic coefficient; electrooptic polymer waveguides; fluorinated passive polymers; glass transition temperature; high thermal stability; hybrid integration; interconnection loss; low-loss interconnection; low-loss passive waveguides; propagation loss; taper length; vertically tapered waveguide; Electrooptic modulators; Electrooptical waveguides; High speed optical techniques; Optical device fabrication; Optical losses; Optical modulation; Optical polymers; Optical refraction; Optical variables control; Optical waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1021989
