NEC's 1550 nm
InGaAsP MQW DFB LASER DIODE
IN COAXIAL PACKAGE
FOR 155 Mb/s AND 622 Mb/s APPLICATIONS
NX8503BG-CC
NX8503CG-CC
FEATURES
•PEAK EMISSION WAVELENGTH:
λP = 1550 nm
•OPTICAL OUTPUT POWER:
Pf = 2.0 mW
•LOW THRESHOLD CURRENT:
ITH = 15 mA @ TC = 25°C
•InGaAs MONITOR PIN-PD
•WIDE OPERATING TEMPERATURE RANGE:
TC = -10 to +85°C
•WITH SC-UPC CONNECTOR
•BASED ON TELCORDIA RELIABILITY
NEC's NX8503BG-CC and NX8503CG-CC are 1550 nm Co-
axial Module DFB (Distributed Feed-Back) laser diode with
single mode fiber. Multiple Quantum Well (MQW) structure is
adopted to achieve stable dynamic single longitudinal mode
operation over a wide temperature range of -10 to +85°C.
The module is ideal as a light source for Synchronous Digital
Hierarchy (SDH) system, STM-1, log-haul L-1.2, L-1.3 and
STM-4, long-haul L-4.2, L-4.3 ITU-T recommendations.
DESCRIPTION
PART NUMBER NX8300BG-CC, NX8300CG-CC
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
PfOptical Output Power from Fiber, CW mW 2.0
VOP Operating Voltage, Pf = 2.0 mW V 1.1 1.6
ITH Threshold Current TC = +25°CmA 15 25
mA 2 50
PTH Threshold Output Power, IF = ITH µW100
IMOD Modulation Current Pf = 2.0 mW, TC = 25°CmA 15 25 40
Pf = 2.0 mW mA 13 60
ηdDifferential Efficiency Pf = 2.0 mW, TC = 25°CW/A 0.050 0.080 0.130
Pf = 2.0 mW W/A 0.030 0.150
∆ηdTemperature Dependence of Differential Efficiency, dB -3 -1.6
Kink Kink, Pf = Up to 2.4 mW (Refer to defenitions) % ±20
λpPeak Emission Wavelength, Pf = 2.0 mW nm 1530 1550 1570
∆λ/∆TTemperature Dependence of Peak Emission Wavelength nm/°C0.1 0.12
∆λ Spectral Width, Pf = 2.0 mW, -20 dB down width nm 0.3 1.0
SMSR Side Mode Suppression Ratio, Pf = 2.0 mW dB 30 40
fcCut-off Frequency, -3 dB, VR = 5 V, Pf = 2.0 mW GHz 2.0
trRise Time, 10 to 90%, Ppk = 2.0 mW, IF = ITH ns 0.5
tfFall Time, 90 to 10%, Ppk = 2.0 mW, IF = ITH ns 0.5
ImMonitor Current, VR = 5 V, Pf = 2.0 mW µA 200 1000 2000
IDMonitor Dark Current VR = 5 V, TC = 25 °CnA 1.0 50
VR = 5 V nA 10 500
ELECTRO-OPTICAL CHARACTERISTICS (TC = -10 to +85°C, unless otherwise specified)
∆η
d
= 10 log η
d
(@ T
C
°C)
η
d
(@ 25 °C)
continued next page
California Eastern Laboratories