We present a simultaneous radio-frequency (RF) and high-speed baseband signal transmission using an electrically superimposed method over a graded-index silica multimode fiber (GI-MMF). To show the feasibility of the method, we experimentally demonstrate simultaneous transmission of electrically superimposed 28-GHz RF and 28-Gbit/s 4-level pulse amplitude modulation (PAM-4) baseband signals at a wavelength of 850 nm over a 50-m GI-MMF. Moreover, to evaluate the scalability of the method, we demonstrate simultaneous transmission of dual-channel, electrically superimposed 28-GHz RF and 14-Gbit/s non-return-to-zero on-off keying baseband signals at 850 nm and electrically superimposed 14-GHz RF and 14-Gbit/s PAM-4 baseband signals at 1550 nm over the 50-m GI-MMF. These results show that the presented method is useful for effectively utilizing the transmission band of transmitters and existing short-reach transmission systems.

中文翻译：

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通过多模光纤同时传输射频和基带信号

我们在渐变折射率石英多模光纤 (GI-MMF) 上使用电叠加方法提出了同时进行射频 (RF) 和高速基带信号传输。为了证明该方法的可行性，我们通过实验证明了在 50 米范围内以 850 纳米的波长同时传输电叠加的 28 GHz 射频和 28 Gb/s 4 级脉冲幅度调制 (PAM-4) 基带信号。 GI-MMF。此外，为了评估该方法的可扩展性，我们展示了双通道、电叠加 28 GHz 射频和 14 Gbit/s 非归零开关键控基带信号在 850 nm 和电叠加的同时传输14-GHz RF 和 14-Gbit/s PAM-4 基带信号在 1550 nm 处通过 50-m GI-MMF。