Aoyama K, Minowa J
Appl Opt. 1979 Apr 15;18(8):1253-8. doi: 10.1364/AO.18.001253.
A wavelength division multiplexing (WDM) technique, which transmits signals with different wavelengths by means of a single optical fiber, can increase the capacity of optical fiber transmission systems. This paper describes the experimental results of a demultiplexer using a diffraction grating for a WDM system. The insertion loss of the demultiplexer could be decreased by using a large core output fiber, an Au-coated diffraction grating, and small aberration lenses. There were five channels in the 0.8-microm wavelength region. Wavelength spacing was 200 A. Insertion loss for each channel was about 2 dB, and cross talk was <-30 dB.
一种波分复用（WDM）技术，可通过单根光纤传输不同波长的信号，它能增加光纤传输系统的容量。本文描述了一种用于WDM系统的采用衍射光栅的解复用器的实验结果。通过使用大芯输出光纤、镀Au衍射光栅和小像差透镜，可以降低解复用器的插入损耗。在0.8微米波长区域有五个通道。波长间隔为200埃。每个通道的插入损耗约为2分贝，串扰小于-30分贝。
