(LANs - Local Area Networks), ( 1 ) . ( - LEDs - Light Emitting Diodes), , ( ( - LD - Laser Diodes)), , , - (). LAN , : Ethernet, Fast Ethernet, FDDI, 100VG-AnyLAN, Token Ring ., 100 / [48, 49].
, , , , LAN. 50/125 () . PDH , , -2, -3, -, , (34,368 /) . . 90- .
1.3.
1.3.1.
(SM ) , LP0i.
- (. 1.13):
- ( SSF) - - G.652;
- (DSF) - . - G.653;
- 1550 (Low Loss) - . - G.654;
- (NZDSF) - . - G.655.
. 1.13. .
1.3.2.
(. - G.652) 1310 . , .
:
|
|
SSF- Standard Singlemode Fibers :
SSMF- Standard Singlemode Fibers ;
SF- Standard Fiber ;
SM- Singlemode ;
USF Usual Singlemode Fiber - 四 ;
NDSF- Non Dispersion Shifted Fiber .
SSF.
90% SSF, .
SSF 웛 ( 1983 .) (~25$/) . 1.1. SSF, .
SSF ( 1.14) [48]
(λ= 1310 ) α 0,35 /, D 3,5 /(.). , SSF , .
, λ=1550 ( D≤17 /(.)), α≤ 0,22 /, SSF 2,5 / . .
1.1.
Corning | SMF-28 SMF-28 |
Alcatel | |
Fujikura | SSF |
Optical Fiber Solutions (OFS) | MC-SM 332 Allwave |
Samsung Electronics | SF-SMF-x |
Sumitomo Electric Industries Ltd. | SSF PureBand |
Yangtze Optical Fibre and Cable (YOFC) | 268WY |
Hitachi cable | SSF |
Furukawa | SSF |
Pirelli | SMR |
1.14.
SSF
SSF . 1.2.
1.2
λ, | ||
α, / | 0,35 | 0,22 |
D, / (.) | 3,5 | 17 |
, W0, | 9,20,4 | 10,40,8 |
, λ0,, | 13021322 | 13021322 |
, S0, / (.²) | 0,092 | 0,092 |