FTTx 㳺 PON ' : 1- ( OLT); 2- (OLT-Si); 3- ( S: ); 4- (-ON/(U)).
8.7 Ͳ ײ ò PON
(OP, ) :
- ;
- ;
- ;
- ;
- 㳿 .
8.1 PON () : -; -; -; -
8.2. . | |||||||||||
, | , dB | , - % | . 1310 / 1550, dB | . 1310 / 1550, dB | |||||||
12 | 4.3 | 50/50 | 3.17/3.19 | 3.12/3.17 | |||||||
13 | 6.2 | 45/55 | 3.73/2.71 | 3.73/2.72 | |||||||
14 | 7.4 | 40/60 | 4.01/2.34 | 3.92/2.32 | |||||||
16 | 9.5 | 35/65 | 4.56/1.93 | 4.69/1.96 | |||||||
18 | 10.7 | 30/70 | 5.39/1.56 | 5.53/1.57 | |||||||
112 | 12.5 | 25/75 | 6.29/1.42 | 6.28/1.28 | |||||||
116 | 13.9 | 20/80 | 7.11/1.06 | 7.21/1.06 | |||||||
124 | 16.0 | 15/85 | 8.16/0.76 | 8.17/0.82 | |||||||
132 | 17.2 | 10/90 | 10.08/0.49 | 10.21/0.60 | |||||||
1x64 | 21.5 | 5/95 | 13.70/0,32 | 12.83/0.35 | |||||||
1x128 | 25.5 | ||||||||||
OP OP: , (1N) OP (2 N). ʳ 2 64128. , OP . ( ) () OP (, 25% ) . OP : FBT (fused biconic taper - 㳿) PLC (planar-lightwave-circuit - 㳿). / OP () .9.2.
8.8 ò PON
8.8.1 - OLT ODF ' ( ) [8].
8.8.2 PON. 㳿, . PON , , . ( - ' : .9.1 S) [5]. PON . - - () OLT . 80% , 1 [3].
8.8.3 - ' . , ( ) ( ). , . . ϳ - ` ' , , . .
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8.8.4 ( ) - , . (ONT, ONU), ' 㳿 PON ' [5]. (). ( 㳿 FTTx).
1. : - 9; ' - 4 ( S = 4); - 4 ( M = 4); - 144 ( A = 144). - 128. : ) / N ( ). 4- ( ', S11: 16, 9 - , 7 , S21: 4 ). .8.1, .8.2.
:
Σ - ( OLT ONU), ;
li - i-, ;
n - ;
a - , /;
NP - ';
AP - ' ', ;
NC - ';
AC - ', ;
A i - i- , ;
, - ', - , - . [ *].
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