【正文】
有線電視光纜傳輸系統(tǒng)指標(biāo)的分析與設(shè)計(jì) 摘 要 介紹了有線電視網(wǎng)中 AM 光纜干線傳輸綜合指標(biāo)的分析與設(shè)計(jì)。由于 DFB 激光器間的非線性有較大差異,故引入了光鏈路這一參數(shù)。當(dāng)把這一參數(shù)引入有線電視光纜干線設(shè)計(jì)時(shí),可根據(jù)有線電視光纜系統(tǒng)不同傳輸距離、光接點(diǎn)的分配指標(biāo)和光纜干線傳輸系統(tǒng)的實(shí)際情況,計(jì)算光鏈路損耗,以確定光端設(shè)備的選型,從而進(jìn)一步確定光纜干線傳輸系統(tǒng)的設(shè)計(jì),使得有線電視總系統(tǒng)指標(biāo)給以保證。 關(guān)鍵詞 AM 光纖;光鏈路損耗; C/N; CTB; CSO;調(diào)制指數(shù) m 《中國(guó)圖書(shū)資料分類(lèi)法》分類(lèi)號(hào) TN The Analysis and Design of Cable Trunk Target in Cable TV System Sun Youxiang Du Zhitao Jiang Yuguo Division of Science and Technology, Hebei University of Science and Technology, Shijiazhuang, 050054 Abstract The analysis and design of AM cable trunk target in close circuit TV system is discussed in the of the nonlinear difference of DFB lasers, a parameter called “l(fā)ightlink” was introduced to make things order to select the proper type of the lighted lose of lightlink should be decided according to the different transmission distance and the real circumstances of cable transmission the c