构建了一种五端口聚合物光路由器，由于四种不同半径的交叉耦合双环谐振器的谐振作用，该器件可完成二维平面内对四个信道波长的定点路由功能。由于聚合物材料和左右覆层材料具有较大的折射率差，四种微环的半径可小至14 μm，波导模式振幅弯曲损耗小于10-4 dB/cm。当不同信道波长沿不同端口输入时，得到了波长与路由链路的关系。计算结果表明，各信道波长沿各路由链路的插入损耗为0.03~0.62 dB，各路由链路on端口和其他off端口的最大串扰小于-39 dB，器件的尺寸约为626 μm×495 μm。与已报道的硅光路由器相比，该聚合物器件具有相似的微环半径和封装尺寸，且由于零静态功耗、低串扰、低损耗和处理工艺简单、价格低廉等优势，该器件在光片上网络中具有潜在的应用价值。

Routing scheme of a kind of polymer five-port optical router is proposed, and it can optically route four channel wavelength data streams along certain definite-path in two-dimensional (2D) plane, owing to the resonance function of cross-coupling two-ring resonators with four different ring radii. Due to the large contrast between polymer core refractive index and the left/right cladding index, the four ring radii are as small as 14 μm, and the mode amplitude bending loss is as low as 10-4 dB/cm. Under the case of lights with different wavelengths inputting into different ports, the relationships between wavelength and routing path are derived. Simulation results on the device reveal that the insertion losses of each channel wavelength along each routing path are within the range of 0.03~0.62 dB, the maximum crosstalk between the on-port along each routing path and other off-ports is less than -39 dB, and the device footprint size is about 626 μm×495 μm. Compared with the previously reported silicon optical routers, this device possesses similar ring radius and similar device size. In addition, because of zero static power consumption, low crosstalk and insertion loss, simple processing technology and low cost, the proposed device shows potential applications in optical networks-on-chip (NoC).