【摘要】 南通开发区外商用光缆专线传输系统的设计应用了HFC网光链路分光比计算的两种方法 ,即控制末端载噪比法和末端功率法 ,通过对理论计算和实测值的比较 ,指出两种设计方法的实用性 ,并建议在实际设计中采用末端载噪比法设计为宜。更多还原

【Abstract】 This thesis discusses two methods in computing optical divide ratio of HFC net optical link in the design of the special fiber optical cable transmission system for foreign business in Nan Tong Development Area. i.e control extremity carrier noise ratio and control end powers. By comparing the theoretical computing results and actual measurements, and discussing the practicability of the two methods, it suggests that the extremity carrier noise ratio is a better design in practice.更多还原