多芯光纤具有集成度高、传输容量大等优点, 为了实现其与单芯光纤阵列的连接, 提出一种基于高精度陶瓷插芯的自组装型低损耗多芯光纤扇入扇出(FIFO)器的设计及制备方法。通过仿真和实验确定了拉锥功率和拉锥速度等拉锥光纤的最优参数, 成功制备出高性能的七芯光纤FIFO器。实验采用的传输链路包含1对FIFO器及5 m长的七芯光纤, 得到7个通道的平均损耗为0.9 dB, 平均串扰为-52 dB。另外, 该FIFO器在波长为1550 nm处、长1 km的七芯光纤中实现了7×10 Gb/s无误码传输, 且各个通道具有良好的一致性。

Multi-core fiber has the advantages of high integration and large transmission capacity. In order to realize its connection with single-core fiber array, a self-assembled ultra-low loss multi-core fiber fan-in and fan-out(FIFO) device design and preparation method based on high-precision ceramic ferrule is proposed. Through simulation and experiments, the optimal parameters of the taper fiber, such as taper power and taper speed were determined, and a high-performance seven-core fiber FIFO device is successfully fabricated. The transmission link used in the experiment includes a pair of FIFO devices and a 5 m long seven-core fiber. The average loss of the seven channels is 0.9 dB and the average crosstalk is -52 dB. In addition, the FIFO device achieves 7×10 Gb/s error-free transmission in a seven-core fiber with a wavelength of 1550 nm and a length of 1 km, and the consistency of each channel is good.