Chen Kaixin, Chu Pak Lim, Chan Hau Ping, Chiang Kin Seng
Department of Electronic Engineering, City University of Hong Kong, Hong Kong, China.
Appl Opt. 2007 Nov 20;46(33):8188-92. doi: 10.1364/ao.46.008188.
A 1 x 4 3D broadband polymer optical waveguide switch matrix is demonstrated. The fabricated device, which contains four vertically coupled thermo-optic switches, has a compact construction (only 9 mm in length) and a power consumption of 45 mW. Compared with the corresponding planar ones, this 3D switch matrix has two distinct features. First, the light signal can be easily switched to any output port by operating only a single switch unit. Second, the switching extinction ratio, cross talk, and insertion loss of this matrix are practically wavelength independent over the whole C band. We also show that this structure can be extended quite simply to an M x M nonblocking switch matrix.
展示了一种1×4的三维宽带聚合物光波导开关矩阵。所制造的器件包含四个垂直耦合的热光开关，结构紧凑（长度仅9毫米），功耗为45毫瓦。与相应的平面开关矩阵相比，这种三维开关矩阵有两个显著特点。第一，只需操作单个开关单元，光信号就能轻松切换到任何输出端口。第二，该矩阵的开关消光比、串扰和插入损耗在整个C波段实际上与波长无关。我们还表明，这种结构可以非常简单地扩展为M×M无阻塞开关矩阵。
