Opticalfibre grating utilize photosensitive characteristic to form the space phase grating in the core, it can change the transmission route of the light wave in the light-transmitting fibre.
光纤光栅是利用光纤材料的光敏性，在纤芯内形成空间相位光栅，它可以改变光波在光导纤维中的传输路径。
2
Photon switching technology is a fundamental solution to the speed unmatch between opticalfibre system with high transmission speed and electronic switching system with slow switching speed.
光子交换技术是解决高速的光纤传输系统和低速的电子交换系统之间速度失配的根本措施。
3
This fibre attenuator is useful to opticalfibretransmission system, because of performance stability and high precision.