Efficient RF Frequency Down-Conversion Using Coupled Quantum-Well Optical Phase Modulator

Efficient RF Frequency Down-Conversion Using Coupled Quantum-Well Optical Phase Modulator

Frequency down-conversion is important to radar front-end. In this work, we achieve efficient RF frequency down-conversion using a coupled quantum-well optical phase modulator fabricated on an indium phosphide material platform. When used in conjunction with an optical phase-locked loop-based linear...

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Veröffentlicht in:IEEE photonics technology letters 2011-05, Vol.23 (10), p.645-647
Hauptverfasser: Renyuan Wang, Bhardwaj, A, Yifei Li
Format: Artikel
Sprache:eng
Schlagworte:
Optical device fabrication
Optical distortion
Optical losses
Optical mixing
Optical modulation
Optical phase-locked loop
Phase modulation
quadratic optical phase modulator
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Zusammenfassung:Frequency down-conversion is important to radar front-end. In this work, we achieve efficient RF frequency down-conversion using a coupled quantum-well optical phase modulator fabricated on an indium phosphide material platform. When used in conjunction with an optical phase-locked loop-based linear phase demodulator, a 1-mm-long device exhibits a down-conversion loss of ~2.6 dB and a spurious-free dynamic range of ~125 dB·Hz 2/3 in the photodetector shot-noise limit. Furthermore, the phase modulator has a very low optical propagation loss (
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2011.2121898