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14.6-GHz LiNbO3 microdisk photonic self-homodyne RF receiver

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2 Author(s)
M. Hossein-Zadeh ; Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA ; A. F. J. Levi

Nonlinear optical modulation combined with simultaneous photonic and RF resonance in an LiNbO3 microdisk modulator is used to create a self-homodyne photonic RF receiver. Carrier and sidebands are mixed in the optical domain, and the modulated optical signal is detected using a photodetector. The photodetector has a bandwidth matched to the baseband signal. It filters out the high-frequency components and generates the baseband photocurrent. Receiver operation is demonstrated by demodulating up to 100-Mb/s digital data from a 14.6-GHz carrier frequency without any high-speed electronic components. A bit error rate of 10-9 is measured for 10-Mb/s downconverted digital data at -15-dBm received RF power. Preliminary results of employing this photonic RF receiver in a short-distance Ku-band wireless link demonstrate the potential of using high-quality optical microresonators in RF receiver applications.

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:54 ,  Issue: 2 )