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A photonic-link millimeter-wave mixer using cascaded optical modulators and harmonic carrier generation

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4 Author(s)
C. K. Sun ; NCCOSC RDT&E, San Diego, CA, USA ; R. J. Orazi ; S. A. Pappert ; W. K. Burns

Efficient frequency conversion into and out of the millimeter wave frequency band has been demonstrated using photonic link signal mixing with cascaded optical modulators. By adjusting the modulator bias point and RF drive power to the modulator introducing the local oscillator signal at f/sub LO/=8.8 GHz, frequency conversions from f/sub s/ to f/sub LO//spl plusmn/f/sub s/, sf/sub LO//spl plusmn/f/sub s/, and 4f/sub LO//spl plusmn/f/sub s/ with respective losses of 4.8, 6.3, and 7.5 dB have been demonstrated. The direct phase noise measurement of the optical RF signal at 2f/sub LO/=17.6 GHz with 1 kHz offset shows -89 dBc/Hz, limited by the RF drive source.

Published in:

IEEE Photonics Technology Letters  (Volume:8 ,  Issue: 9 )