NEC's 1310 nm
InGaAsP MQW FP LASER DIODE
IN COAXIAL PACKAGE
NX7302BA-CC
NX7302CA-CC
FOR 622 Mb/s APPLICATIONS
DESCRIPTION
FEATURES
• CENTER WAVELENGTH:
λC = 1310 nm
• OPTICAL OUTPUT POWER:
Pf = 0.2 mW
• LOW THRESHOLD CURRENT:
ITH = 9 mA
• HIGH CUTOFF FREQUENCY:
NEC'sNX7302BA-CCandNX7302CA-CCare1310nmFabry-
Perot (FP) laser diode coaxial modules with single mode fiber.
They have a Multiple Quantum Well (MQW) structure and a
built-in InGaAs monitor photo diode. These modules are ideal
as light sources for Synchronous Digital Hierarchy (SDH)
systems, STM-4 and short-haul S-4.1 ITU-T recommenda-
tions.
fC = 2.0 GHz
• InGaAs MONITOR PIN-PD
• WITH SC-UPC CONNECTOR
• WIDE OPERATING TEMPERATURE RANGE:
-40 to +85°C
• BASED ON TELCORDIA RELIABILITY
ELECTRO-OPTICAL CHARACTERISTICS (TC = -40 to +85°C, unless otherwise specified)
PART NUMBER
NX7302BA-CC, NX7302CA-CC
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
mW
V
MIN
TYP
0.2
1.2
9
MAX
Pf
VOP
ITH
Optical Output Power from Fiber
Operating Voltage, Pf = 0.2 mW
Threshold Current
1.5
TC = +25°C
mA
mA
4
2
20
50
PTH
Threshold Output Power, IF = ITH
µW
15
IMOD
Modulation Current
Pf = 0.2 mW, TC = 25°C
Pf = 0.2 mW
mA
mA
7
5
15
20
40
ηd
Differential Efficiency
Pf = 0.2 mW, TC = 25°C
Pf = 0.2 mW
W/A
W/A
0.010
0.005
0.015
-2
0.025
0.040
∆ηd
Temperature Dependence of Differential Efficiency,
(@ T °C)
(@ 25 °C)
dB
-3
η
η
d
C
∆ηd = 10 log
d
Kink
Kink, Pf = Up to 0.24 mW (Refer to Definitions)
Center Wavelength, Pf = 0.2 mW, RMS (-20 dB)
Temperature Dependence of Center Wavelength
Spectral Width, Pf = 0.2 mW, RMS (-20 dB)
Cut-off Frequency, -3 dB
%
nm
±20
1356
0.5
λc
1274
1310
0.4
∆λ/∆T
nm/°C
nm
σ
fC
tr
1.3
2.0
0.2
2.5
GHz
ns
Rise Time, 10 to 90%, Ppk = 0.2 mW, IF = ITH
Fall Time, 90 to 10%, Ppk = 0.2 mW, IF = ITH
0.5
0.5
tf
ns
0.3
Applicable to Monitor PD: TC = -40 to +85 °C unless otherwise specified
Im
ID
Monitor Current, VR = 5 V, Pf = 0.2 mW
µA
100
700
1200
Dark Current
VR = 5 V, TC = 25 °C
nA
nA
0.1
10
50
500
VR = 5 V
Ct
Terminal Capacitance, VR = 5 V, f = 1 MHz
pF
%
20
LINm
Linearity, VR = 5 V, Pf = 0.02 to 0.2 mW
(Refer to Definitions)
±10
γ
Tracking Error, Im = const. (Refer to Definitions)
dB
0.5
1.0
California Eastern Laboratories
