Push-pull electro-optic polymer modulators with low half-wave voltage and low loss at both 1310 and 1550 nm

Push-pull polymeric electro-optic Mach-Zehnder (MZ) modulators with V-pi of 1.2 and 1.8 V at 1310 and 1550 nm, respectively, with an interaction lengt h of 2 cm are demonstrated. These devices were made from second-order nonli near optic guest-host polymers that consisted of a phenyltetraene bridged h igh mu beta chromophore guest and an amorphous polycarbonate host. Poling w as done in N-2 atmosphere to avoid chromophore bleaching by oxidation. A MZ -like two-arm microstrip line was used as the driving electrode in these de vices. The optical response dropped 3 dB electrical from 2 to 20 GHz. These 3 cm long devices have 5 dB total chip loss at both wavelengths and good t hermal stability. (C) 2001 American Institute of Physics.