Basic knowledge of PLC divider

by:Fiber Hope     2020-07-27

1, PLC divider ( 分流器) Internal structure

PLC products consisting of three parts: input FA FA, chips and output. As shown in figure 1

the structure of FA

FA structure includes: cover plate, base plate, fiber, soft plastic, hard rubber. As shown in figure 1

soft glue area: for fixed fiber in FA cover plate and bottom plate, protective fiber damage at the same time.

hard plastic zone: fixed FA cover plate, base plate, and the optical fiber in the V groove.

V groove

V groove is located in the FA substrate evenly distributed, for placement and fixation of the bare fiber V shape groove.

V groove according to the number of channels can be divided into 2 ch, 4 ch, 8 ch and 16 ch and 32 ch, etc.

V groove spacing size according to the waveguide can be divided into two kinds of, um, 127, and 250 um.

SPL chip

to learn the structure of the chip.

as shown in figure 1, SPL chip consists of chips and cover plate.

the classification of the chip

categories: by number of input and output channels are divided into 1 by 8, 1 x16, 2 by 8, etc.

according to the perspective of classification: usually divided into 8 ° ﹢ and -- 8 ° chip.

waveguide distribution

polishing Angle

Angle for + 8 ° chips and FA

Angle for - 8 ° chips and FA

2, the classification of the PLC divider

product model ( Specification) Classification

classification by number of input/output channels, can be divided into 1 x2, 1 * 1 * 4, 32, 1 * 4, etc.

according to encapsulation methods of classification

according to the different encapsulation process or method, PLC Splitter is often divided into the following five types.

Splitter encapsulation - — Referred to as 'Splitter

spliter encapsulation - — Product Fan - for short Out

the micro module encapsulation - — Product referred to as 'BL

module encapsulation - — Product or module

case packaging - — Product referred to as 'chassis

3, PLC product optical parameters

insertion loss ( IL) The output optical power relative to the input relative variation of light power.

mathematical expression IL = - 10lg( 应用/ Pin)

return loss ( RL) Reflected back to the light power relative to the input relative variation of light power.

mathematical expression IL = - 10lg( 参照/销)

uniformity ( UNI) Measuring device performance differences between each channel size, usually expressed as

UNI = IL ( max) - - - - - - IL( min)

(direction DIR) Each channel signal crosstalk between degree measure device.

mathematical expression IL = - 10lg( 撅嘴ch2 /销ch1)

temperature related loss ( TDL) IL is the measure of the change of the product under the conditions of different temperature.

wavelength related loss ( WDL) IL is the measure of the change of the product under the conditions of different wavelengths.

polarization dependent loss ( PDL) The polarization state of maximum transmission and minimum transmission ratio.

PDL_ { dB} = 10日志〔压裂{ T_{识别 Max } } { T_{识别 最小值} } )

the Tmax and Tmin respectively test devices, DUT) The maximum transmission and minimum transmission.


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