中央新闻纪录电影制片厂 The fourth technology of fiber-optic interaction systems applied optical amplification to lessen the have to have for repeaters and wavelength-division multiplexing (WDM) to improve info capability. The introduction of WDM was the start of optical networking, as WDM became the engineering of choice for fiber-optic bandwidth enlargement.[24] The first https://devin8012k.review-blogger.com/55531124/cctv-things-to-know-before-you-buy