No.1DevicesThe Design of Binary Diffrative Microlens with Subwavelength Structures CHEN Si-xiang,YIXin-jian,ZENG Yan-an(1)………………………Design of Pick-up Objective L ens for DVD GUO Pei-ji,YU Jing-chi,FAN Zhong-wei(4 )…………………………………………………………A Magnetic Field Sensor Based on a Fiber Bragg Grating with a Cantilever BeamZHAO Wei-feng,SHENG Qiu-qin,DONG Xiao-yi,etal.(7)……………………………………………………………………………………………Computation…