Photonic encoder and decoder for optical code-division multiplexing with time-to-space converters and angle-multiplexed holograms.
Photonic encoder and decoder for optical code-division multiplexing with time-to-space converters and angle-multiplexed holograms.
复制标题
用于光学码分复用的光子编码器和解码器，具有时空转换器和角度复用全息图。
作者：
H. Tsuda;H. Takenouchi
提出了一种用于光码分复用（OCDM）的光子编码器-解码器对，它使用时间-空间转换器和角度复用全息图。编码器将来自每个输入端口的脉冲转换为特定代码，并将输入信号多路复用到输出端口。解码器中的全息图在发送的代码和记录的代码之间产生相关波形。最后对采用该编解码器对的OCDM系统的性能进行了估计。当信道数为8时，在误码率为10（-9）的最坏情况下，8比特长度正交码的最大频谱效率为0.17（比特/秒）/Hz。
A photonic encoder-decoder pair for optical code-division multiplexing (OCDM) that uses time-to-space converters and angle-multiplexed holograms is proposed. The encoder converts the pulse from each input port into a specific code and multiplexes input signals into the output port. The hologram in the decoder generates a correlation waveform between the transmitted code and the recorded code. The performance of the OCDM system with the encoder-decoder pair is estimated. The maximum spectral efficiency for 8-bit length orthogonal codes in the worst case at a bit-error rate of 10(-9) is 0.17 (bits/s)/Hz when the number of channels is 8.