可用塑料纤维代替玻璃纤维在短距离上传输音乐。塑料纤维比只有头发丝粗细的玻璃纤维容易处理。在1mm~2的塑料纤维终端可插入两个“空心二极管”作为发射机和接收机。较大的纤维端面可以很好地传输调制光。发射和接收单元主要使用新研制的二极管。这种二极管工作在红外波段,其波长在塑料纤维的透射区为最佳。 Plastic fibers can be used instead of glass fiber to transmit music over short distances. Plastic fibers are easier to handle than glass fibers that have only the thickness of the hair. In the 1mm ~ 2 plastic fiber terminal can be inserted into two “hollow diode ” as a transmitter and receiver. Larger fiber end faces transmit modulated light well. Transmitting and receiving units mainly use newly developed diodes. This diode works in the infrared band and its wavelength is best in the transmissive area of ​​the plastic fiber.