解复用器 meaning in English
demultiplexer
Examples
- The forming mechanism of crosstalks in the tdm system was analyzed theoretically , and the relationship between crosstalks and the extinction ratio of optical pulse modulator used in the tdm system was investigated . the interchannel and intrachannel crosstalks in the wdm system were discussed separately , and the contributions to crosstalks were appraised from architecture ’ s alteration , the finite isolation between channels in multiplexers or demultiplexers , and nonlinear effects in the system . noises in the large - scale multiplexing system were studied theoretically , and all kinds of factors were considered that have relation to noises , phase resolution , and dynamic range of the system , such as multiplexing channel number , the length of the transmission fiber , using in - line erbium - dropped fiber amplifiers or not , and so on
本文从理论上分析了光纤水听器时分复用系统串扰的形成机理,分析了光脉冲调制器的消光比与系统串扰的关系;分别对光纤水听器波分复用系统的异频串扰和同频串扰进行了理论分析,研究了光纤水听器波分复用结构、波分复用器与解复用器隔离度等因素以及非线性效应对系统串扰的影响;对大规模光纤水听器复用系统噪声进行深入细致的理论分析,研究了系统噪声、相位分辨率、动态范围与复用数目、传输光纤长度、中继光纤放大器等诸多因素的关系。 - It consists of two parts : channel modulator ' s controlling system and the receiver ' s controlling system , including the interface designing of the demultiplexer , the controlling of the channel demultiplexer , if modulator , tuner , the setting and transmitting of the system parameters , and the real - time monitoring of the whole system , etc . based on the descriptions of the scheme of bdb - t and the principles of controlling circuits , this paper presents the hardware and software designing methods of the controlling circuits , and realizes a powerful , multifunctional and reliable controlling system which can automatically record the operational states of the system and communicate with other personal computers through a rs - 232 serial interface
控制系统是实现整个传输系统的关键部分，它分为信道调制器控制系统和接收机控制系统两大部分，其中包括了信道解复用器用户接口设计、对信道解复用器的控制、系统传输参数的设置与传送、中频调制器的配置、数字调谐器的配置，以及对整个系统的实时监控。本文在阐述了bdb - t方案及其各部分电路的控制原理的基础上，详细描述了控制系统的硬件电路设计和软件实现方法，实现了一套功能完善、性能稳定且具有自动记忆功能的控制系统，同时该系统通过rs - 232串行接口可以实现与计算机的串口通信。 - On the other hand the crosstalk of the wdm signal at fan - out of demultiplexer will increase with the power difference of the each channel . therefore , the gain of optical amplifier to wdm signal must have small ripple . one of the solutions is using two or more pumps with different wavelength and power according to the range of signal light to be amplified and raman gain coefficient of the fiber
另外，各路信号光之间较大的功率差异会增加wdm信道解复用器输出端的串话，所以光放大器对wdm各路信号光的增益要满足一定的增益平坦度，解决该问题可以根据所要放大的wdm信号光的波长范围和所用光纤的拉曼增益系数谱，采用多个不同波长和功率的泵浦光源进行泵浦。