Phase-Modulated Hybrid High-Speed Internet/WiFi-Pre-5G In-Building Networks Over SMF and PCF With GI-POF/IVLLC Transport

To the best of our knowledge, a phase-modulated hybrid high-speed Internet/wireless local area network (WLAN) wireless fidelity (Wi-Fi)/pre-fifth-generation (Pre-5G) in-building network over an integration of single-mode fiber (SMF), phonic crystal fiber (PCF), and graded index-plastic optical fiber (GI-POF)/invisible laser light communication (IVLLC) transmission is feasibly demonstrated for the first time. An effective fiber Bragg grating (FBG)-based phase modulation (PM)-to-intensity modulation (IM) conversion scheme is adopted to replace the sophisticated dispersion-induced PM-to-IM conversion scheme or costly delay interferometer (DI). This proposal is the first one to deliver high-speed Internet, WLAN Wi-Fi, and Pre-5G broadband heterogeneous services so as to bridge fiber backhaul and in-building network. The light is phase-modulated with 4-Gb/s four-level pulse amplitude modulation (PAM4) (high-speed Internet), 24-Mbps/2.4-GHz microwave (MW) (WLAN Wi-Fi), and 5-Gb/s/3.5-GHz 16-quadrature amplitude modulation-orthogonal frequency-division multiplexing (Pre-5G) data signals over 41.44-km fiber link (40-km single-mode fiber + 1.44-km photonic crystal fiber) with 30-m GI-POF/IVLLC transmission. Bit error rate, PAM4 eye diagrams, error vector magnitude, and constellation map are examined to perform well to reveal the practicality of constructing a phase-modulated hybrid high-speed Internet/Wi-Fi/Pre-5G in-building network.