The characteristics of the code words are analyzed,its comparisons with Hardmard,MQC,MFH,BIBD(m=2) made,tunable Fiber Bragg Grating(FBG) codec designed and the principle of coding and decoding explained.

• 分析了码字特性,与Hardmard、MQC、MFH、BIBD(m=2)码做了比较,设计了可调谐光纤布拉格光栅(FBG)编解码器,阐述了编解码原理。