WAVENET 1.1 | Page 190

Standards

Appendix

G.657A1 SM Fiber
standard 9/125 ITU-T G.657.A1 reduced bend
(RBS)
WAVENET ITU-T G.657.A1
is
with ITU-T G.652D
where
All

are

ITU-T G.652D

ITU-T G.657.A1
ANSI/ICEA S-87-2-50

Parameter

Cladding diameter

Fibre curl radius
T

T
T
T

Cabled

Unit

µm
µm
%
µm
%
%
µm
µm
µm
m
dB/km
dB/km
dB/km
dB/km
dB/km
dB/km
dB/km
dB/km
dB/km
dB/km

Value

Parameter

Unit

ccf

9.0 ± 0.4
10.1 ± 0.5

Value

(ps/nm·km)
(ps/nm·km)
(ps/nm·km)
nm
nm

0

ps/(km2·km)

0

124.8 ± 0.9
dB

& 1550 nm

1.4661.467
1.4671.468

242 ± 10
Fibre temperature dependence -60
-10

C

C, 98% R.H.

dB/km
dB/km
dB/km

Bending dependence 1 turn 10mm radius 1550 nm
Bending dependence 1 turn 10mm radius 1625 nm
Bending dependence 10 turn 15mm radius 1550 nm
Bending dependence 10 turn 10mm radius 1625 nm
T
T

%
dB
dB
dB
dB
N

1