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PRELIMINARY DATA SHEET
NEC's 1310 nm InGaAsP MQW FP LASER DIODE IN COAXIAL PACKAGE NX7304BG-CC FOR FIBER OPTIC COMMUNICATIONS NX7304CG-CC
FEATURES
• CENTER WAVELENGTH: λC = 1310 nm • HIGH OUTPUT POWER FROM FIBER: PF = 2.0 mW MIN • LOW THRESHOLD CURRENT: ITH = 10 mA • HIGH CUT-OFF FREQUENCY: fC = 2.0 GHz • InGaAs MONITOR PIN-PD • WIDE OPERATING TEMPERATURE RANGE: TC =-40 to +85°C • WITH SC-UPC CONNECTOR • BASED ON TELCORDIA RELIABILITY
DESCRIPTION
NEC's NX7304BG-CC and NX7304CG-CC are 1310 nm Multiple Quantum Well (MQW) structured Fabry-Perot (FP) laser diode coaxial modules with single mode fiber. These modules are ideal as a light source for ITU-T recommended Synchronous Digital Hierarchy (SDH) systems, for fiberoptic communications such as SONET and for digital transmission.
ELECTRO-OPTICAL CHARACTERISTICS (TC = 25°C, unless otherwise specified)
PART NUMBER SYMBOLS VOP ITH IMOD ηD λC ∆λ/∆T σ tr tf Im ID γ1 Note: 1. PARAMETERS AND CONDITIONS Operating Voltage, Pf = 2.0 mW Threshold Current, TC = 85°C Modulation Current, Pf = 2.0 mW Differential Efficiency, TC = 85°C Center Wavelength, Pf = 2.0 mW, RMS (-20 dB) TC = -40 to +85°C Temperature Dependence of Center Emission Wavelength, TC = -40 to +85°C Spectral Width, Pf = 2.0 mW, RMS (-20 dB) TC = 85°C mA W/A nm 0.100 0.075 1290 1260 UNITS V mA MIN NX7304BG-CC NX7304CG-CC TYP 1.1 10 25 15 0.150 0.100 1310 1330 1360 0.5 2.5 4.0 0.5 0.5 10 1.0 MAX 1.3 25 50 20
nm/°C nm ns ns µA nA dB 100
0.4 1.3 1.5 0.2 0.3 700 0.1
Rise Time, 10 to 90% Fall Time, 90 to 10% Monitor Current, VR = 5 V, Pf = 2.0 mW Monitor Dark Current, VR = 5 V Tracking Error, Im = const., TC = -40 to +85°C γ = 10 log Pf 2.0 mW
Pf (mW) TC = 25°C TC = -40 to +85°C
2.0 Pf
0
Im
Im
California Eastern Laboratories
NX7304BG-CC, NX7304CG-CC ABSOLUTE MAXIMUM RATINGS1
(TC = 25°C, unless otherwise specified) SYMBOLS Pf IF VR IF VR TC TSTG TSLD RH PARAMETERS Optical Output Power from Fiber Forward Current of LD Reverse Voltage of LD Forward Current of PD Reverse Voltage of PD Operating Case Temperature Storage Temperature Lead Soldering Temperature (10 s) Relative Humidity (noncondensing) mA V mA V °C °C °C % 150 2.0 10 20 -40 to +85 -40 to +85 260 85 UNITS RATINGS
Note: 1. Operation in excess of any one of these parameters may result in permanent damage.
TYPICAL PERFORMANCE CURVES (TC = -40 to +85°C)
OUTPUT POWER FROM FIBER vs. FORWARD CURRENT
5.0
100
THRESHOLD CURRENT AND OPERATION CURRENT vs. CASE TEMPERATURE
Output Power from Fiber, Pf (mW)
4.0 TC = +85°C
Threshold Current, ITH (mA) Operation Current, IOP (mA)
TC = -40°C TC = +25°C TC = +70°C
50 30
IOP
ITH 20
3.0
10
2.0
5 3 2 1
1.0
0
50
100
150
-60
-40
-20
0
20
40
60
80
100
Forward Current, IF (mA)
Case Temperature, TC (°C)
TEMPERATURE DEPENDENCE OF DIFFERENTIAL EFFICIENCY FROM FIBER
TEMPERATURE DEPENDENCE OF CENTER WAVELENGTH
1360
Differential Efficieny from Fiber, ηD (W/A)
0.3
Center Wavelength, λC (nm)
-60 -40 -20 0 20 40 60 80 100
1340
0.2
.