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A new method of microwave photonic filter (MPF) with widely tunable passband is proposed and experimentally proved by using an optical-injected Fabry-Perot laser diode. It is based on the basic principle that the FP laser wavelength selectively amplified under optical injection. By applying the optical wave from a tunable-laser source (TLS) to the PM, a phase modulated optical signal is generated,...
A novel approach for generating RF vector signals with equivalent single sideband (SSB) modulation based on a dual-polarization quadrature phase-shift keying (DP-QPSK) modulator is proposed and experimentally demonstrated. One QPSK modulator in the DP-QPSK modulator is driven by a single-frequency RF signal. By properly setting its biases, a SSB carrier suppressed (SSB-CS) signal is generated. The...
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