Wideband, Low Driving Voltage Traveling-Wave Mach-Zehnder Modulator for RF Photonics

Wideband, Low Driving Voltage Traveling-Wave Mach-Zehnder Modulator for RF Photonics

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...

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Veröffentlicht in:IEEE photonics technology letters 2008-04, Vol.20 (7), p.517-519
Hauptverfasser: Jarrahi, M., Lee, T.H., Miller, D.A.B.
Format: Artikel
Sprache:eng
Schlagworte:
Bandwidth
Fabrication
Gallium arsenide
Low voltage
Optical device fabrication
Optical modulation
phase modulation
photodetectors
Photonics
quantum-confined Stark effect (QCSE)
Radio frequency
Testing
Wavelength measurement
Wideband
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Zusammenfassung: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2008.918889