Abstract

The four-wave-mixing (FWM) suppression of a master-to-slave injection-locked two-wavelength Fabry–Perot laser diode (FPLD) pair is investigated from the viewpoint of integrating fiber-optic wired and millimeter-wave (MMW) wireless networks for mobile and satellite communications. This is achieved by shifting the FWM side modes away from the cavity mode to avoid FWM enhancement induced by cavity resonance. Mode-deviated two-wavelength injection from a 900-μm master FPLD to a 600-μm slave FPLD successfully suppresses the resonant FWM side modes to –31 and –35 dBm, which enables the transmission of 18-Gb/s 64-quadrature amplitude modulation orthogonal frequency-division multiplexing (QAM OFDM) data with error vector magnitude (EVM), signal-to-noise ratio (SNR), and bit error rate (BER) values of 6.3%, 24 dB, and 1.6 × 10-4, respectively. The FWM-suppressed 600-μm slave shows lower chromatic dispersion than that of the 750-μm slave. In addition, a 47-GHz MMW carrier remotely beat by the two-wavelength-injected slave enables the transmission of passband 2-Gb/s 4-QAM OFDM data with EVM, SNR, and BER values of 36.3%, 8.8 dB, and 2.9 × 10−3, respectively, after 25-km single-mode fiber wired and 1.6-m free-space wireless transmission.

© 2016 IEEE

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