NX8508 Datasheet, PDF (1/5 Pages) California Eastern Labs – NECs InGaAsP MQW-DFB LASER MODULE IN COAXIAL PACKAGE FOR 2.5 Gb/s, CWDM APPLICATIONS

PRELIMINARY DATA SHEET
NEC's InGaAsP
MQW-DFB LASER MODULE
IN COAXIAL PACKAGE FOR
2.5 Gb/s, CWDM APPLICATIONS
NX8508
Series
FEATURES
• INTERNAL OPTICAL ISOLATOR
• PEAK EMISSION WAVELENGTH
λp = 1 470 to 1 610 nm (Based on CWDM)
• OPTICAL OUTPUT POWER
Pf = 2.0 mW
• OPERATING CASE TEMPERATURE RANGE
TC = -20 to +85°C
• SIDE MODE SUPPRESSION RATIO
SMSR = 40 dB
• InGaAs MONITOR PIN-PD
• WITH SC-UPC CONNECTOR
• BASED ON TELCORDIA RELIABILITY
DESCRIPTION
NEC'S NX8508 Series are 1 470 to 1 610 nm Multiple Quantum
Well (MQW) structured Distributed Feed-Back (DFB) laser
diode coaxial modules with an internal optical isolator.
These devices are ideal for 2.5 Gb/s CWDM application.
ELECTRO-OPTICAL CHARACTERISTICS (TC = -20 to +85°C, unless otherwise specified)
PART NUMBER
NX8508 SERIES
SYMBOLS
Pf
Vop
Ith
PARAMETER AND CONDITIONS
Optical Output Power from Fiber, CW, TC = 25°C, IF = Ith + 20 mA
Operating Voltage, CW, Pf = 2.0 mW
Threshold Current, TC = 25°C
Pth
ηd
Δηd
λp
Δλ/ΔT
SMSR
tr
Threshold Output Power, IF = Ith
Differential Efficiency
Pf = 2.0 mW, TC = 25°C
Pf = 2.0 mW
Temperature Dependence of Differential Efficiency
Δηd = 10 log
ηd (@ TC°C)
ηd (@ 25°C)
Peak Emission Wavelength, CW, Pf = 2.0 mW, TC = 25°C
Temperature Dependence of Peak Emission Wavelength, CW
Side Mode Suppression Ratio, Pf = 2.0 mW
Rise Time, 20-80%, Pf = 2.0 mW
Continued on next page
UNIT
mW
V
mA
MIN.
TYP.
2.0
1.1
10
μW
W/A
0.07
0.1
0.04
dB
−3.0
−1.6
nm
nm/°C
dB
ps
λp−2
0.08
30
λp ^*1
0.10
40
MAX.
1.6
20
50
100
λp+2
0.12
100
California Eastern Laboratories