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Crosstalk in Photorefractive Optical Interconnects Due to Nonlinear Mixing of Gratings

P.E. Andersen, Physics Department, The Technical University of Denmark, Lyngby, Denmark; P.M. Petersen, Optics and Fluid Dynamics Department, Riso National Laboratory, Roskilde, Denmark; and P. Buchhave, The Technical University of Denmark, Lyngby, Denmark

Photorefractive interconnects are used in many applications such as neural networks, information storage, clock distribution, and optical computing. In these applications, an important issue is crosstalk. Recently, we have investigated crosstalk in a Bi12SiO20(BSO) optical interconnect.1 In this device, significant crosstalk is observed due to nonlinear mixing of gratings. The nonlinear mixing of gratings is a consequence of the nonlocal response of the space charge field in the photorefractive medium, and it can be analyzed from a nonlinear solution of the Band Transport Model.