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。
Optical fibre 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.
人们正在尝试着利用液晶的电光效应以各种方式来进行光波的波前调制或将波前离散化之后的相位调制。
Now, people are trying to use various methods, including the electro-optics effect of LC, to modulate the wavefront of light or modulate its phase after scattering the wavefront.
光辐射的调制是指改变光波振幅、强度、相位或频率、偏振等参数使之携带信息的过程。
Modulation of light refers to changing parameters of light wave such as amplitude, intensity, and phase, frequency, polarization, etc. to make it carry message.
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