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Vsevolojskiy district,
Leningrad Region

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(812) 318-53-02

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(812) 318-53-24
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(812) 318-53-03

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Optical fiber specifications

Optical fibers applied in manufacture of Opten fiber-optic cables correspond to recommendations of
ITU - T G.65 -G.653, G.655, G.656

The applied types of optical fiber:

type A - single-mode fiber with low wafer peak; recommendation G 652D
type E - standard single-mode fiber; recommendation G 652В
type C - dispersion shifted single-mode fiber; recommendation G 653
type N - non-zero dispersion shifted single mode fiber; recommendation G 655
type G - multi-mode graded index fiber (core diameter - 50 mcm); recommendation G 651
type M - multi-mode graded index fiber (core diameter 62.5 mcm); recommendation G 651
type V - non-zero dispersion shifted single-mode fiber for broadband optical transmission; recommendation G 656

Key optical specifications of cables:

Parameters

Unit of measurement

Optical fiber type

E

S

N

A

V

G

M

Operating wavelength

nm

1310, 1550

1550

1530...
1620

1310...
1550

1460..
1625

1300

1300

Damping coefficient (for cables with gel-filled modules)

1300 nm

dB/km

-

-

-

-

-

< 0.7

< 0.7

1310 nm

< 0.36

-

-

-

-

-

-

1550 nm

< 0.22

< 0.22

< 0,22

-

0,25

-

-

1460 nm





0,35



within the operating wavelength range

-

-

< 0,22...0,25

< 0.40...0.25

0,22..0,35

-

-

Damping coefficient (for cables with fibers in tight buffer coating)

1300 nm

dB/km

-

-

-

-

-

< 1,3

< 1,3

1310 nm

< 0.5

-

-

-

-

-

-

1550 nm

< 0.4

< 0.4

< 0,4

-

-

-

-

within the operating wavelength range

-

-

< 0,4...0,5

< 0,5....0,4

-

-

-

Mode field diameter

1310 nm

mcm

9,3+0,5

-

-

9,3+0,5

-

-

-

1550 nm


10,5+1,

8,1+0,6

8,4+0,6

10,5+1,0

(7-11)+0,7

-

-

Non-concentricity
of mode field

mcm

< 0,8

< 0,8

< 0,8

< 0,8

< 0,8

-

-

Cable cut-off wavelength

nm

< 1260

< 1250

< 1260

< 1260

< 1450

-

-

Zero dispersion wavelength

nm

1310+10

1555+15

-


1310+10

1422+17

-

-

Fiber chromatic dispersion
coefficient

1285 - 1330 nm

ps/nm?km

< 3.5

-

-

< 3.5


-

-

1530 - 1565 nm

< 18

< 3.5

< 6

< 18


-

-

1565 - 1625 nm

-

-

< 12

-


-

-

1460 - 1625 nm





2 ? 14



Dispersion curve at zero dispersion shift wavelength

ps/nm2 * km

< 0,092

< 0,085

< 0,05

< 0,092

< 0,052

-

-

Numerical aperture


-

-

-

-


0,200 +0,015

0,275 +0,015

Broadbandness coefficient

MHz?km

-

-

-

-


< 500

< 500

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