正向采用双模块设计，第一级采用低噪音放大模块，第二级采用功率倍增或砷化镓功率倍增模。
Uses double-hybrid design forward: first, low-noise amplifier module, then power double amplifier module or GaAs power double amplifier module, while using independent module return.
以此为基础，详细研究了光敏内包层对该类型光栅中存在的正向传播的纤芯基模与反向传播的纤芯基模以及与反向传播的包层模之间的耦合的影响。
Based on this, we study the photosensitive inner cladding's influence on the core-mode-core-mode coupling and the core-mode-cladding-mode coupling in this kind of grating.
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