Extinction ratio is ratio of logic "1" average optical power to logic "0" average optical power under the worst reflection and complete modulationcondition.
消光比是指在最坏反射条件时，全调制条件下，逻辑“1”平均光功率与逻辑“0”平均光功率的比值。
2
Based on given electric current and Pulse Width Modulation (PWM) controlling system, the feedback process under each braking condition is studied.
以电流给定，脉宽调制(PWM)调压调速系统为例，研究各种制动状态下的能量回馈过程。
3
The optimal operating condition of gain switched semiconductor laser with different modulation rate is studied in this paper.