It is shown that the reduction of dark current is much greater than that of lightcurrent as a result of side collection effect.
由于利用了侧向收集效应，光电流减少不多而暗电流明显地减小。
2
The part of the lightcurrent mainly including: CATV, Public Broadcasting System, Closed Circuit Monitoring TV and Premises Distribution System and so on.
弱电部分主要内容包括：有线电视、公共广播系统及综合布线系统的设计。
3
Furthermore, from the Angle of the experiment, it verifies the influence exerted by the wave crest coefficients of the lightcurrent on the light lifetime.