title: Design and simulation of multimode interference based demultiplexers aided by computer-generated planar holograms.
abstract: 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.
authors.affiliation: Department of Electro-Optical Engineering, National Cheng Kung University, No. 1 University Road, Tainan 701, Taiwan.
authors.forename: Ming-Chan
authors.initials: MC
authors.lastname: Wu
authors.forename: Shuo-Yen
authors.initials: SY
authors.lastname: Tseng
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006696:Holography / Q000295:instrumentation* / Q000379:methods*; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*