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Conversions of the microwave subcarriers of digital signals in optical links

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3 Author(s)
Le Guennec, Y. ; LEMO, CNRS, Grenoble, France ; Cabon, B. ; Maury, G.

We present a technique for up and down-conversion of microwave (MW) subcarriers of digital signals based on the insertion of a passive all-optical device (unbalanced Mach-Zehnder interferometer) in a frequency modulated (FM) fiber-optic link. This technique has been successfully tested previously with CW signals. Here, simulations of digital transmission, spectral and BER measurements are presented. The technique uses a very low cost passive optical device that is also able to work with WDM and full duplex systems (1.3-1.5 μm). The frequency range of operation is only limited by the direct modulation of the laser diode. BER measurements for BPSK format show low distortions caused by the system

Published in:

Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE  (Volume:1 )

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