Photonic Generation of Background-Free Phase-Coded Microwave Pulses with Elimination of Power Fading
نویسندگان
چکیده
We report a novel photonic scheme to generate background-free phase-coded microwave pulses with elimination of power fading by cascading dual-polarization dual-parallel Mach–Zehnder modulator (DP-DPMZM) and polarization (PolM). The DP-DPMZM is driven radio frequency (RF) signal two first-order optical sidebands an orthogonal state, while the PolM three-level electrical coding signal. By properly adjusting series frequency-doubled can be generated after optical-to-electrical conversion. Benefiting from carrier-suppressed single-sideband (CS-SSB) modulation, proposed generator suppress chromatic-dispersion-induced power-fading effect, which has excellent potential for long-distance fiber transmission. In addition, system directly signals in pulse mode truncating continuous wave (CW) signals. Moreover, wideband tunability since no filter involved our scheme. method was theoretically analyzed experimentally verified. Phase-coded centered at 14 GHz 19.2 bit rate 0.5 Gb/s were successfully generated.
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ژورنال
عنوان ژورنال: Photonics
سال: 2023
ISSN: ['2304-6732']
DOI: https://doi.org/10.3390/photonics10010066