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David A. B. Miller - Abstracts
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Publication # 362

362. M. Jarrahi, T. H. Lee, and D. A. B. Miller, “Wideband, low driving voltage traveling-wave Mach-Zehnder modulator for RF photonics,” IEEE Photonics Technol. Lett. 20, 517-519 (2008)

We report the design, fabrication, and testing of a traveling-wave Mach-Zehnder modulator on a GaAs substrate. Operating at 870-nm wavelength, we obtained an extremely low driving voltage of 0.45 V and a high measurement-instrument-limited small-signal modulation bandwidth of 18 GHz, projected to an estimated bandwidth of 50 GHz. We have also monolithically integrated photodetectors with an impulse response of 8-ps full-width at half-maximum, and a saturation power of 330 mW, giving a flexible high-performance platform for RF photonics.

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