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Low Power Mach–Zehnder Modulator in Silicon-Organic Hybrid Technology

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12 Author(s)
Palmer, R. ; Inst. of Photonics & Quantum Electron., Karlsruhe Inst. of Technol., Karlsruhe, Germany ; Alloatti, L. ; Korn, D. ; Schindler, P.C.
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We report on a silicon-organic hybrid modulator based on a Mach-Zehnder interferometer (MZI) operating at 10 Gbit/s with an energy consumption of 320 fJ/bit. The device consists of a striploaded slot waveguide covered with an electro-optic polymer cladding. The MZI modulator is poled to be driven in push-pull operation by a single coplanar RF line. Our nonlinear coefficient r33 = 15 pm/V in combination with an 80 nm narrow slot enables RF peak-to-peak drive voltages as low as 800 mVpp to suffice for an extinction ration of 4.4 dB for a 1.5 mm long modulator.

Published in:

Photonics Technology Letters, IEEE  (Volume:25 ,  Issue: 13 )