鈥?/div>
WITH SC CONNECTOR: Standard, FC connector: Option
(Refer to Ordering Information)
DESCRIPTION
NEC's NR8501 Series are InGaAs avalanche photo diode
(APD) coaxial modules with optical fiber pigtail. They are
designed for long wavelength 2.5 Gb/s optical communication
systems and are ideal as a reciever for Synchronous Digital
Hierarchy (SDH) system, STM-16 ITU-T recommendations.
ELECTRO-OPTICAL CHARACTERISTICS
(T
C
= 25擄C, Unless otherwise specified)
PART NUMBER
SYMBOLS
V
BR
未
1
I
D
I
DM
C
t
f
C
PARAMETERS AND CONDITIONS
Reverse Breakdown Voltage, I
D
=100
碌A(chǔ)
Temperature Coefficient of Reverse Breakdown Voltage
Dark Current, V
R
= V
BR
x 0.9
Multiplied Dark Current, M = 2 to 10
Terminal Capacitance, V
R
= V
(BR)R
x 0.9, f = 1 MHz
Cut-off Frequency, M = 5
M = 10
M = 30
Sensitivity,
位
= 1310 nm, M = 1
位
= 1550 nm, M = 1
V
R
= V (@I
D
= 1
碌A(chǔ))
x
F
ORL
Excess Noise Factor
2
,
位
= 1310 nm, 1550 nm,
I
PO
=1.0
碌A(chǔ),
M = 10, f = 35 MHz, B = 1 MHz
Excess Noise Factor
2
,
位
= 1310 nm, 1550 nm,
I
PO
=1.0
碌A(chǔ),
M = 10, f = 35 MHz, B = 1 MHz
Optical Return Loss
SMF
GI-50 Fiber
dB
30
28
0.7
5
UNITS
V
%/潞C
nA
nA
pF
GHz
2.5
2.5
1.0
0.80
0.81
30
MIN
40
NR8501 Series
TYP
60
0.20
7
1
0.5
3.0
3.0
1.2
0.94
0.96
40
30
5
0.75
MAX
80
S
M
A/W
Multiplication Factor,
位
= 1310 nm, I
PO
= 1.0
碌A(chǔ)
Notes:
V
BR
(25擄C+鈭員擄C)-V
BR
(25擄C)
1.
未
=
鈭員擄C
鈥?/div>
V
BR
(25擄C)
X
2. F = M
California Eastern Laboratories
1
2
3
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