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

Hua Zhang, Min‐Cheol Oh, Attila Szep, William H. Steier, Cheng Zhang, Larry R. Dalton, H. Erlig, Yian Chang, Daniel H. Chang, Harold R. Fetterman

Applied Physics Letters · 2001 · 91 citations · 5 references

Concepts

Abstract

Push–pull polymeric electro-optic Mach–Zehnder (MZ) modulators with Vπ of 1.2 and 1.8 V at 1310 and 1550 nm, respectively, with an interaction length of 2 cm are demonstrated. These devices were made from second-order nonlinear optic guest–host polymers that consisted of a phenyltetraene bridged high μβ chromophore guest and an amorphous polycarbonate host. Poling was done in N2 atmosphere to avoid chromophore bleaching by oxidation. A MZ-like two-arm microstrip line was used as the driving electrode in these devices. 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 thermal stability.

References

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