• Title : Optical downconversion from millimeter-wave to IF-band over 50-km-long optical fiber link using an electroabsorption modulator
• Authors : K. Kitayama and R. A. Griffin
• Journal : IEEE Photonics Technol. Lett., Vol.11, No.2, pp.287-289 (February 1999).
• Abstract : Error-free optical downconversion of 40-GHz milimeter (mm)-wave subcarrier multiplexed 156-Mb/s signal to 3-GHz IF-band optical signal at \lambda=1560-nm over 50-km-long nondispersion shifted signal-mode fiber link is experimentally demonstrated by using an electroabsorpion modulator but without using any RF mixer. This optical downconversion technique is particulary suitable for the mm-wave radio-on-fiber wireless up-link systems because fiber-optic transport of the downconverted IF-band wireless signals can avoid a serious fiber dispersion effect, and low-cost antenna base stations can be realized without mm-wave active components.
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