研究目的
To demonstrate the potential of hollow-core antiresonant fiber (HC-ARF) for high-capacity, low-latency optical communication systems by transmitting multi-terabit/s WDM data without power penalty and investigating its high tolerance to nonlinearities.
研究成果
The study demonstrated the significant potential of HC-ARF for optical communications, showing high tolerance to nonlinearities and the capability of handling very high optical powers. This makes HC-ARF a promising transmission medium for future low-latency, ultra-high capacity data transmission applications.
研究不足
The experiment was limited by the maximum output power of the high-power EDFA and the input coupling loss from SMF-28 to the HC-ARF. The comparison of nonlinearity impairment was biased against the HC-ARF due to higher optical power along its length.
1：Experimental Design and Method Selection
The experiment involved transmitting 16 channels of 32-GBd dual-polarization Nyquist-shaped 256QAM signals through a 270-m long HC-ARF. The methodology included using a tunable laser, LiNbO3 IQ modulator, digital-to-analog convertors (DACs), and a polarization multiplexing emulation stage.
2：Sample Selection and Data Sources
The samples were two HC-ARF fibers drawn from the same cane, with lengths of 130 m and 140 m, and core diameters of 40 μm and 38 μm, respectively.
3：List of Experimental Equipment and Materials
Equipment included tunable external cavity lasers (ECLs), LiNbO3 IQ modulator, DACs, erbium-doped fiber amplifiers (EDFAs), and a 65-GHz dual-polarization coherent receiver.
4：Experimental Procedures and Operational Workflow
The signal was modulated, amplified, and decorrelated before being combined and passed through a polarization multiplexing emulation stage. The signal was then transmitted through the HC-ARF link and detected using a coherent receiver.
5：Data Analysis Methods
The demodulated symbols were used to calculate the bit error rate (BER) and signal-to-noise ratio (SNR).
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