中文摘要：

一个 photonic 灯笼被学习它被插入到纯硅石的七 multimode 纤维形成毛状的试管。因为在纤维被插入以前，聚合物 claddings 被移开，逐渐变细的结束的核心有一个一致折射索引。因而，轻分发也是制服。描述慢慢地变化的波导并且 multimode 联合的二个理论被用来分析 photonic 灯笼。传播损失作为逐渐变细的部分增加的长度减少。为有 3.4 厘米的 taper 长度的一台设备，损失为在反向的方向从插入的纤维通过 taper 宣传到逐渐变细的目的和 0.99 dB 的光平均是大约 1.06 dB。为有 0.7 厘米的 taper 长度的一台设备，二损失价值分别地是 2.63 dB 和 2.53 dB。如果与灯笼有关的参数相当被定义，结果证明在设备与逐渐变细的结束和低损失的传播完成一致轻分布是可能的。

英文摘要：

A photonic lantem is studied which is formed by seven multimode fibers inserted into a pure silica capillary tube. The core of the tapered end has a uniform refractive index because the polymer claddings are removed before the fibers are inserted. Consequently, the light distribution is also uniform.Two theories describing a slowly varying waveguide and multimode coupling are used to analyze the photonic lantern. The transmission loss decreases as the length of the tapered part increases. For a device with a taper length of 3.4 cm, the loss is about 1.06 dB on average for light propagating through the taper from an inserted fiber to the tapered end and 0.99 dB in the reverse direction. For a device with a taper length of 0.7 cm, the two loss values are 2.63 dB and 2.53 dB, respectively. The results show that it is possible to achieve a uniform light distribution with the tapered end and a low-loss transmission in the device if parameters related to the lantern are reasonably defined.