NEC's 1625 nm InGaAsP MQW FP
PULSED LASER DIODE IN DIP PACKAGE
FOR OTDR APPLICATION (120 mW MIN)
NX7661JB-BC
FEATURES
DESCRIPTION
NEC's NX7661JB-BC is a 1625 nm developed strained Mul-
tiple Quantum Well (st-MQW) structure pulse laser diode DIP
module with single mode fiber and internal thermoelectric
cooler. It is designed for light sources of optical measurement
equipment (OTDR).
• HIGH OUTPUT POWER:
Pf = 120 mW MIN at IFP = 1000 mA,
Pulse width (PW) = 10 ms, Duty = 1%
• LONG WAVELENGTH:
λC = 1625 nm
• INTERNAL THERMOELECTRIC COOLER, THERMISTOR
• HERMETICALLY SEALED 14 PIN DUAL-IN-LINE PACKAGE
• SINGLE MODE FIBER PIGTAIL
ELECTRO-OPTICAL CHARACTERISTICS (TLD = 25°C, TC = -20 to +65°C, unless otherwise specified)
PART NUMBER
NX7661JB-BC
TYP
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
V
MIN
MAX
4.0
VFP
ITH
Pf
Forward Voltage, CW, IF = 30 mA
Threshold Current, CW
mA
30
70
Optical Output Power from Fiber, IFP = 1000 mA,
mW
120
PW = 10 µs, Duty = 1 %
λC
Center Wavelength, RMS, IFP = 1000 mA,
nm
1615
1625
7.0
1635
PW = 10 µs, Duty = 1 %
σ
Spectral Width, RMS, IFP = 1000 mA,
PW = 10 µs, Duty = 1 %
nm
ns
15.0
2.0
tr
tf
Rise Time, 10-90%
Fall Time, 90-10%
ns
2.0
ELECTRO-OPTICAL CHARACTERISTICS
APPLICABLE TO THERMISTOR AND TEC: (TLD = 25°C, TC = -20 to +65°C, unless otherwise specified)
PART NUMBER
NX7661JB-BC
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
MIN
9.5
TYP
10.0
3450
0.6
MAX
10.5
3550
0.8
R
B
Thermistor Resistance, TLD = 25°C
kΩ
K
B Constant
3350
IC
Cooler Current, ∆T = 40 K
Cooler Voltage, ∆T = 40 K
Cooling Capacity, IC = 0.8 A
A
VC
∆T1
V
1.1
1.5
K
40
Note:
1. ∆T = | TC - TLD |.
California Eastern Laboratories
