Design of a Polarization Insensitive Triplexer Using Directional Couplers Based on Submicron Silicon Rib Waveguides
Design of a Polarization Insensitive Triplexer Using Directional Couplers Based on Submicron Silicon Rib Waveguides
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DOI：
10.1109/jlt.2008.2010465
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发表时间：
2009-06-01
影响因子：
4.7
通讯作者：
He, Sailing
中科院分区：
文献类型：
--
作者：
Shi, Yaocheng;Anand, Srinivasan;He, Sailing
利用基于亚微米硅肋波导的定向耦合器，设计了一种可用于两种极化的超紧凑三工器。首先，通过精心选择波导截面几何形状，实现偏振不敏感定向耦合器。选择第一个定向耦合器中耦合区域的长度来分隔三个波长（即一个端口为1490 nm，另一个端口为1310和1550 nm）。第二方向耦合器分离1310和1550 nm的波长。对于1490nm的通道，使用额外的定向耦合器来减少1310和1550nm通道的串扰。该三工器的总长度仅为400，用三维波束传播方法进行了仿真，结果表明该三工器在两种极化下都具有良好的性能。
An ultracompact triplexer which could be used for both polarizations is designed by utilizing directional couplers based on submicron silicon rib waveguides. First, the polarization insensitive directional couplers are realized by carefully choosing cross-sectional geometry of the waveguide. The length of the coupling region in the first directional coupler is chosen to separate the three wavelengths ( i.e., 1490 nm to one port, 1310 and 1550 nm to the other port). The second directional coupler separates the wavelengths of 1310 and 1550 nm. For the channel of 1490 nm, an additional directional coupler is used to reduce the crosstalk from the 1310 and 1550 nm channels. The total length of the present triplexer is only 400 and simulation with three-dimensional Beam Propagation Method shows good performances for both polarizations.