- ( ). (), , - () . /.
() . (1) : α=0; α=0; α=0,02 /. . .
(1) , λ1=1310 λ2=1550 . , λ1=1310 1550 .
n- ;
m- .
n= 1; 2 0 (.1)
n= 3;4 (.1)
n= 5;6 (.1)
n= 7;8 L (.1)
n= 9;10 V (.2)
m= 1-5 , 10;
m= 6-0 , 5.
: . , .
2.
.
. 1 [1].
, 1975...1980 . , (850 , 1300 1550 ). , 1990 . , , = 1380 .
. 2 [1].
:
- a l, 1/l4, ;
|
|
- a 1,6 , ;
- , .
. 1. |
. 2. |
. 2 , a. , .
, : 850 (), 1310 (). 1550 ().
, .
, , , 0,350,40 /. 0,20 1550 . , .
1260 1675 . (. 2), .
, -, 6 (. 1.5) [1, 2].
1.
O | Original () | 12601360 | |
E | Extended () | 13601460 | |
S | Short wavelength () | 14601530 | |
C | Conventional () | 15301565 | |
L | Long wavelength () | 15651625 | |
U | Ultra-long wavelength () | 16251675 |
, DWDM, C. (L-band). S.
CWDM, . G.694.2, 1271 1611 .
12601650 50 .