A fiber-optic communication apparatus includes a modulator, a combiner and an electro-optic converter. The modulator modulates a number (N) of radio frequency (RF) signals with the same frequency respectively into a number (N) of modulated signals with mutually different frequencies, where N≧2. The combiner is coupled to the modulator for combining the modulated signals therefrom into a combined signal that has a number (N) of components with mutually different frequencies. The electro-optic converter is coupled to the combiner for converting the combined signal therefrom into an optical signal that has a number (N) of components with mutually different frequencies.
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