N ×N Reconfigurable Nonblocking Polymer/Silica Hybrid Planar Optical Switch Matrix Based on Total-Internal-Reflection Effect
N ×N Reconfigurable Nonblocking Polymer/Silica Hybrid Planar Optical Switch Matrix Based on Total-Internal-Reflection Effect
复制标题
基于全内反射效应的 N ×N 可重构非阻塞聚合物/二氧化硅混合平面光开关矩阵
DOI：
10.1109/jphot.2017.2718019
复制
发表时间：
2017
影响因子：
2.4
通讯作者：
Wang L.J.
中科院分区：
文献类型：
--
作者：
Liang L.;Zhang K.;Zheng C.T.;Zhang X.;Qin L.;Ning Y.Q.;Zhang D.M.;Wang L.J.
提出了一种由N（N-1）/22 × 2热光聚合物/二氧化硅混合全内反射开关元件构成的N × N无阻塞光开关矩阵（OSM）的可重构模型.与已有的全无阻塞OSM相比，该模型的单元数减少了约50%，而且占用空间更小，功耗更低。每个元件由交叉的多模聚合物/二氧化硅混合波导和在开关节点处的加热器电极组成。在1550 nm波长处需要53.9 mW的开关功率，以将串扰降至-28.0 dB以下。测试结果表明，在交叉态和条形态下，上升时间为421.5/410.1 μs（O 1/O2），下降时间为534.2/464.6 μs（O 1/O2），串扰分别为-27.6和-29.1dB。扣除耦合损耗后，器件在交叉态和条形态下的传播损耗分别约为1.0和1.8dB。采用3个和6个开关元件制作的尺寸为16.0 mm × 6.8 mm和26.0 mm × 6.8 mm的3 × 3和4 × 4可重构无阻塞OSM均表现出良好的开关性能，插入损耗分别小于3.6和7.2 dB。
We present a reconfigurable model for N × N non-blocking optical switch matrix (OSM) constituted by N(N-1)/2 2 × 2 thermo-optic polymer/silica hybrid total-internal-reflection switch elements. The number of the elements in the general model is reduced by about 50% compared to the reported all nonblocking OSM, in addition, the proposed model is more compact in footprint and more power-efficient. Each element consists of crossed multimode polymer/silica hybrid waveguides and a heater electrode at the switching node. A switching power of 53.9 mW is required at 1550-nm wavelength to drop the crosstalk below -28.0 dB. Measurements result in a rise time of 421.5/410.1 μs (O1/O2), a fall time of 534.2/464.6 μs (O1 /O2), and crosstalk of -27.6 and -29.1 dB under cross state and bar state, respectively. Subtracting coupling losses, propagation losses of the device under cross state and bar state are about 1.0 and 1.8 dB, respectively. The fabricated 3 × 3 and 4 × 4 reconfigurable non-blocking OSMs using three and six switch elements at sizes of 16.0 mm × 6.8 mm and 26.0 mm × 6.8 mm all show excellent switching performances, and the insertion losses are less than 3.6 and 7.2 dB, respectively.