Abstract
An approach for photonic generation of multi-function microwave/pulse signals has been proposed and verified, which is capable of achieving Nyquist/triangular pulse signals and frequency quadrupling/12-tupling microwave signals. Based on optical carrier suppressed modulation in a dual-parallel Mach-Zehnder modulator, a four-line optical frequency comb and a Nyquist pulse are generated. Subsequently, polarization controlling using an optical interleaver and a linear polarizer is conducted to manipulate spectra, after which a pulse signal with triangular shape and a microwave signal with high-frequency multiplication factor are generated. By applying a 10-GHz RF driving signal, a Nyquist pulse and a full-duty-cycle triangular pulse with repetition frequency of 40GHz, and 40-/120-GHz millimeter-wave signals can be obtained. This proposal provides the potential of higher-frequency multi-waveform and millimeter-wave signals generator for an all-optical network.
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