Symmetric Few-Mode Fiber Couplers as the Key Component for Broadband Mode Multiplexing
Symmetric Few-Mode Fiber Couplers as the Key Component for Broadband Mode Multiplexing
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DOI：
10.1109/jlt.2014.2327479
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发表时间：
2014-05
影响因子：
4.7
通讯作者：
C. Tsekrekos;D. Syvridis
中科院分区：
文献类型：
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作者：
C. Tsekrekos;D. Syvridis
对用于模分复用和波分复用传输系统的全光纤宽带模复用器（MMUX）进行了设计和分析。MMUX基于级联的2-D或3-D对称少模光纤（FMF）耦合器。MMU针对C波段和多路复用模式LP 01、LP 11 a、LP 11 b、LP 21 a、LP 21 b和LP 02进行了优化，响应几乎平坦，平均插入损耗约为1.6 dB，具体取决于设计方法。FMF耦合器和MMUX的操作进行了数值分析，通过全矢量光束传播方法。如果进一步考虑每个LP模式的两种偏振态，则此类全光纤MMUX可用于组合12个空间信道，与单空间信道系统相比，支持光纤传输系统中通过空间（模分和偏振）分复用的数量级容量增加。联合收割机。
All-fiber broadband mode multiplexers (MMUXs) for mode and wavelength division multiplexing transmission systems are designed and analyzed. The MMUXs are based on cascaded 2-D or 3-D symmetric few-mode fiber (FMF) couplers. The MMUXs are optimized for operation over the C band and multiplex modes LP01, LP11a, LP11b, LP21a, LP21b, and LP02 with a nearly flat response and an average insertion loss around 1.6 dB, depending on the design approach. The operation of the FMF couplers and the MMUXs is analyzed numerically by means of a full-vectorial beam propagation method. If the two polarization states of each LP mode are further considered, such all-fiber MMUXs can be used to combine 12 spatial channels, supporting an order of magnitude capacity increase-compared to a single spatial channel system-in optical fiber transmission systems through space (mode and polarization) division multiplexing.