Wu Ming-Chan, Tseng Shuo-Yen
Department of Electro-Optical Engineering, National Cheng Kung University, No. 1 University Road, Tainan 701, Taiwan.
Opt Express. 2010 May 24;18(11):11270-5. doi: 10.1364/OE.18.011270.
A 1.31/1.55 microm multimode interference based wavelength demultiplexer aided by computer-generated planar holograms is proposed. The device length is not limited to the common multiples of the beat lengths for the two wavelengths. The demultiplexer length is chosen as the first self-imaging length for 1.55 microm input, and a computer-generated holographic pattern is used to image the 1.31 microm input to the cross output port. The design and optimization of the holographic pattern is presented. The device performance is investigated using the beam propagation method.
提出了一种基于1.31/1.55微米多模干涉且由计算机生成平面全息图辅助的波长解复用器。该器件长度不限于两种波长拍长的公倍数。解复用器长度被选为1.55微米输入的第一个自成像长度，并且使用计算机生成的全息图案将1.31微米输入成像到交叉输出端口。给出了全息图案的设计与优化。使用光束传播法研究了器件性能。
