为改善传感器的性能，微弱光强信号的检测需要载波调制和双光路补偿。
To improve its performance, a carrier modulation and double light route compensation are necessary for detecting faint optical power signals.
在弱光强条件下得到了空间屏蔽光伏明孤子的解析解表达式，与运用数值计算的方法所得到的结果十分吻合。
The analytic expression for the spatial screening photovoltaic bright solitons obtained under the weak light intensity agrees well with the results obtained by the numerical calculation.
在弱光范围，光响应随光强的变小呈线性减弱，且光响应的弛豫时间变长。
In the weak intensity range, the photoresponse decreases linearly with the light intensity and the relaxation time of the photoresponse becomes larger.
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