One of the common techniques to increase data bitrate using visible light communication (VLC) fibers system is to use wavelength division multiplexing (WDM). However, the implementation of WDM requires additional devices and more power consumption which can limit the system performances. To overcome these problems, we propose a new approach for designing an RGB multiplexer based on multicore polymer optical fiber (MC-POF). The new configuration is based on replacing seven air-holes regions with polycarbonate (PC) layers along the fiber length. The PC layer length sizes are suitable to the light coupling of the operating wavelengths which allows us to control the light switching between closer PC layers and to obtain an RGB multiplexer device without adding more devices. The locations and the sizes of the PC layers along the fiber length and the key geometrical parameters of the MC-POF were studied and optimized utilizing the beam propagation method (BPM). Results show that after a 20 mm light propagation the PC MC-POF RGB multiplexer can be obtained with a low power loss of 0.6 to 1.02 dB, large bandwidth of 7.3 to 28.4 nm and good isolation between the transmission of the input R/G/B channels.

使用可见光通信（VLC）光纤系统提高数据比特率的常见技术之一是使用波分复用（WDM）。但是，WDM的实现需要额外的设备和更多的功耗，这可能会限制系统性能。为了克服这些问题，我们提出了一种基于多芯聚合物光纤（MC-POF）设计RGB多路复用器的新方法。新的配置基于沿纤维长度用聚碳酸酯（PC）层替换了七个气孔区域。PC层长度的大小适合于工作波长的光耦合，这使我们能够控制更近的PC层之间的光切换并获得RGB多路复用器设备而无需添加更多设备。利用光束传播方法（BPM）研究并优化了沿纤维长度的PC层的位置和大小以及MC-POF的关键几何参数。结果表明，在传播20 mm的光之后，可以获得PC MC-POF RGB多路复用器，它具有0.6至1.02 dB的低功耗，7.3至28.4 nm的大带宽以及输入R / G /的传输之间的良好隔离B频道。