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光通信与多媒体的时代山下一郎著张东峰译光通信技术（一）用于通信的光人们用光能看见东西，通信的开始是靠姿势或手势向对方传达意思的，之后靠烽火，旗舰的旗及旗语的通信也日益增多。靠自然界的光通信必然会受到信息量与传送距离的限制。１８７６年，格雷厄姆发明了电...
Optical communications and multimedia era Yamashita Ichiro Zhang Dongfeng Transmitted light communication technology (A) for the light of communication People can see things with light, the beginning of communication is based on gestures or gestures to convey the meaning of each other, followed by the beacon of fire, flagship flag And semaphore communication is also increasing. Optical communication by nature is bound to be limited by the amount of information and transmission distance. In 1876, Graham invented electricity ...