NEC's 1310 nm
InGaAsP MQW DFB LASER DIODE
IN COAXIAL PACKAGE
NX8303BG-CC
NX8303CG-CC
FOR 622 Mb/s APPLICATION
FEATURES
DESCRIPTION
• PEAK EMISSION WAVELENGTH:
λp = 1310 nm
NEC's NX8303BG-CC and NX8303CG-CC are 1310 nm Dis-
tributed Feed-Back (DFB) laser diode coaxial modules with an
internal optical isolator. These modules are ideal as light
sources for Synchronous Digital Hierarchy (SDH) systems,
STM-4, long-haul L-4.1 ITU-T recommendations.
• OPTICAL OUTPUT POWER:
Pf = 2.0 mW
• WIDE OPERATING TEMPERATURE RANGE:
Tc = -10 to +85°C
• SIDE MODE SUPPRESSION RATIO
SMSR = 40 dB
• InGaAs MONITOR PIN-PD
• WITH SC-UPC CONNECTOR
• BASED ON TELCORDIA RELIABILITY
ELECTRO-OPTICAL CHARACTERISTICS (TC = -10 to +85°C, unless otherwise specified)
PART NUMBER
NX8303BG-CC, NX8303CG-CC
SYMBOLS
PARAMETERS AND CONDITIONS
Optical Output Power from Fiber, CW
Operating Voltage, Pf = 2.0 mW
UNITS
mW
V
MIN
TYP
2.0
1.2
15
MAX
Pf
VOP
ITH
1.6
Threshold Current
TC = +25°C
mA
mA
25
55
PTH
Threshold Output Power, IF = ITH
µW
100
IMOD
Modulation Current
Pf = 2.0 mW, TC = 25°C
Pf = 2.0 mW
mA
mA
8
6
20
30
50
ηd
Differential Efficiency
Pf = 2.0 mW, TC = 25°C
Pf = 2.0 mW
W/A
W/A
0.070
0.040
0.100
-2.2
0.200
0.300
∆ηd
Temperature Dependence of Differential Efficiency,
(@ T °C)
(@ 25 °C)
dB
-3.5
ηd
C
∆ηd = 10 log
ηd
Kink
λp
Kink, Pf = Up to 2.4 mW (Refer to defenitions)
Peak Emission Wavelength, Pf = 2.0 mW
%
±20
1335
0.1
nm
1280
30
1310
0.09
0.1
∆λ/∆T
∆λ
Temperature Dependence of Peak Emission Wavelength nm/°C
Spectral Width, Pf = 2.0 mW, -20 dB down width
Side Mode Suppression Ratio, Pf = 2.0 mW
Cut-off Frequency, -3 dB, VR = 5 V, Pf = 2.0 mW
Rise Time, 10 to 90%, Ppk = 2.0 mW, IF = ITH
Fall Time, 90 to 10%, Ppk = 2.0 mW, IF = ITH
Monitor Current, VR = 5 V, Pf = 2.0 mW
nm
dB
1.0
SMSR
fc
40
GHz
ns
2.0
tr
0.15
0.15
700
0.5
0.5
tf
ns
Im
µA
200
1500
ID
Monitor Dark Current
VR = 5 V, TC = 25 °C
VR = 5 V
nA
nA
0.1
10
50
500
Ct
LINm
γ1
Monitor PD Terminal Capacitance, VR = 5 V, f = 1 MHz
Linearity, VR = 5 V, Pf = 0.2 to 2.0 mW (Refer to defenitions)
Tracking Error, Im = const. (Refer to defenitions)
Relative Intensity Noise, Ref = -14 dB
pF
%
1.0
20
10
dB
0.5
1.0
RIN
dB/Hz
-135
California Eastern Laboratories
