[1] [1] Smit M K,Dam C V.phasar based WDM devices:principles,design and applications.IEEE J.Select Topics Quantum Electron,1996,2(2):236～250

[2] [2] Garth S J.Mode behavior on bent planar dielectric waveguides.IEE Proc Optoelectron,1995,142(2):115～120

[3] [3] Yamauchi,Kikuchi S.Beam propagation analysis of bent step-index slab waveguides.Electron Lett,1990,26(12)822～833

[4] [4] Rivera M.A finite difference BPM analysis of bent dielectric waveguides.J of Lightwave Tech,1995,13(2):233～238