Laser is the key component in multichannel optical fiber CATV system for improvement of the signal quality, especially in 1 550 nm VSB-AM system based on the g.
激光器是多频道光纤CATV系统中提高传输信号质量的关键器件，特别是在受色散和非线性影响的基于G。
2
Amplitude modulation is divided into 4 ways: am (amplitude), DSB (bilateral with carrier suppression modulation), SSB (single sideband modulation), VSB (VSB).