Encoder for optical fiber communication and optical fiber transmission device

An encoder (100) for optical fiber communications is provided. The encoder (100) comprises: an input (104) for receiving a sequence of information bits (102); a digital signal processor (DSP) (106) for converting the sequence of information bits (102) into a sequence of modulation symbols (110) to modulate an optical carrier signal; and an output (108) for outputting the sequence of modulation symbols (110). The DSP (106) is configured to convert the sequence of information bits into the sequence of modulation symbols such that the sequence of modulation symbols has a minimum signal power metric value among all symbol sequences in a symbol sequence candidate set. The symbol sequence in the candidate set is a different representation of the information bit sequence in a symbol space. 提供了一种用于光纤通信的编码器(100)。所述编码器(100)包括：输入端(104)，用于接收信息比特序列(102)；数字信号处理器(digital signal processor，DSP)(106)，用于将所述信息比特序列(102)转换为调制符号序列(110)以调制光载波信号；输出端(108)，用于输出所述调制符号序列(110)。所述DSP(106)用于将所述信息比特序列转换为所述调制符号序列，使得所述调制符号序列在符号序列候选集中的所有符号序列中具有