Abstract
High sensitivity reception is a crucial problem of fiber radio
links. A significant improvement is obtained by applying a new approach
called optical-microwave double mixing. The new approach can provide as
much as 30 dB of higher mixing product in a narrow-band compared with the
direct detection applying only additional passive components. Detailed
investigation of the optical-microwave double-mixing method is shown to
get optimum adjustment for specific applications. The new method is
advantageously used for the reception of subcarrier-multiplexed optical
signals.
© 2003 IEEE
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