A Novel Dual-Band Fiber Bragg Grating with Enhanced Side-Lobe Suppression Ratio by Using Triple Exposure Technique. - Zhihong Li; Xiufeng Yang; Xin Guo; Qizhen Peng; Chao Lu 001; Ping Shum 001; Tee Hiang Cheng (Int. J. Wirel. Opt. Commun., 2003)