分路

The reader may ask, how does the demultiplexer know which group of 8-digits relates to channel 1,2, and so on?

读者也许会问，分路设备怎么会知道哪一组 8 位码对应于第 1 路， 2 路及其他各路呢？

By utilizing the cross-gain modulation effect and the period-one oscillation harmonic frequency-locked in an optically injected semiconductor laser, we can extract the wavelength conversional individual channel optical clock from the optical-time-division-multiplexing signal. In a FP-LD, we numerically simulate the extraction of 20 GHz optical clock at 1550 nm from the 2×20 Gb/s OTDM signal at 1555 nm, and experimentally obtain the -105 dBc/Hz phase noise frequency division clock of 12.36 GHz to 6.18 GHz with simultaneous wavelength conversion from 1550.24 nm to 1545.91 nm.

采用一个FP半导体激光器作为全光分路时钟提取及波长转换器，数值模拟实现了从波长为1555 nm、速率为2×20 Gb/s的光时分复用信号中提取出波长转换为1550 nm、重复频率为20 GHz的分路光时钟，实验完成了从波长为1550.24 nm、重复频率为12.36 GHz光脉冲信号中提取出相位噪声为-105 dBc/Hz的波长为1545.91 nm、重复频率6.18 GHz的分频光时钟。

On the distribution transformer, whose impedance is independent of varying load while the frequency is higher than 25KHz, and the parallel resonance frequency of which is in 3~10KHz.

由探讨知，杆上配电变压器的并联共振频率约在3~10KHz之间，在此频率范围，信号的分路损失最小，又载波频率立於25KHz时，其分路损失几与负载的变动无关。

On the disribution transformer, whose impedance is independent of varying load while the frequency is higher than 25KHz, and the parallel resonance frequency of which is in 3~10 kHz.

由探讨知，杆上配电变压器的并联共振频率约在3~10kHz之间，在此频率范围，信号的分路损失最小，又载波频率高於25KHz时，其分路损失几与负载的变动无关。

Based on the theory of uniform transmission line and four-terminal net circuit, this paper presents a simulation model of ZPW-2000 jointless track circuit shunt current. A kind of numerical algorithm of shunt current is established with MATLAB.

运用均匀传输线和电路四端网理论，建立了ZPW-2000无绝缘轨道电路分路电流的计算模型，利用MATLAB软件实现了分路电流的数值算法。

This invention discloses a duplexer and a multiplexer of the communication system and a method to realize them on a PCB circuit, which applies a 3db bridge and a low pass filter to constitute a hopstreet duplexer without waste band channels, in which, the signals are shunted and combined by the design of the circuit structure and power distribution of the 3-db bridge and phase offset function, the band filter of the low pass filter and the reflection function of a stopband to make up of a costless duplexer in theory to merge the two channels of different frequencies and reduce loss to increase volume and working bandwidth, then a multiplexer is formed by cascading multiple duplexers.

本发明涉及通信设备，公开了一种通信系统双工器和多工器以及双工多工方法，使得双工器和多工器能够在PCB电路上实现，并且体积小、损耗小、成本低、容量大。本发明中，采用三分贝电桥、低通滤波器构成无损耗频带信道合路的双工器，其中通过电路结构的设计并利用三分贝电桥的功率分配和相位偏移功能将各路信号进行分路和组合，利用低通滤波器的频带滤波和阻带反射功能联合三分贝电桥构造一个理论无耗的双工器，使两路不同频率的信道合路，降低的损耗、提高容量和工作带宽。通过多个上述双工器的级联构成多工器。

Based on the single star optical fiber network and with the quotation of new notion of equivalent optical fiber, the idea and method of designing optical divide ratio in multiple star optical network optical distributor are introduced in this paper.

基于一级单元式星型光纤网中光分路器分光比的设计，引用等效光纤及其长度的新概念，通过实例介绍了多重星型光纤网络中光分路器分光比的设计思路和方法。

This paper analyses and researches the solve method for optical link loss and optical divide ratio in star optical fiber networks,introduces the solve clue,method and steps by the examples for optical divide ratio of every optical distributor and for optical link loss of the entire network in complicated star optical fiber networks.

分析和研究了星形光纤网中光链路损耗和光分路器分光比的求解方法，通过实例着重介绍了比较复杂的广义星形网中各光分路器分光比与整个网络的全程光链路损耗的求解思路、方法和步骤。

Splitter valves Shunt valve can play the role of segregation and convergence, the material from the collection of more material to the point or to spread from one point to multiple points.

2.5、分路用阀分路阀可以起到分流和汇流的作用，将物料从多点汇集到一点或者将物料从一点分散到多点。

Then every shunt points on the track circuit were checked that every shunt point shunt reliably, with no "dead section".

然后对轨道电路的不同分路点进行分路检查，确保轨道电路的每一点可靠分路，无&死区&。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。