Song, J. , Luo, X. , Fang, Q. , Jia, L. , Tu, X. , Liow, T. , Yu, M. , Lo, G. (2012). 'Silicon-based Low-Power Reconfigurable Optical Add-Drop Multiplexer (ROADM)'. World Academy of Science, Engineering and Technology, Open Science Index 69, International Journal of Electronics and Communication Engineering, 6(9), 945 - 948.