DATA SHEET
NEC's DIRECTLY MODULATED
InGaAsP MQW-DFB
LASER DIODE MODULE
FOR 2.5 GB/s, 110 KM AND 240 KM REACH
DWDM METRO AND CATV APPLICATIONS
NX8563LA
Series
FEATURES
DESCRIPTION
NEC's NX8563LA Series is a 1 550 nm Multiple Quantum
Well (MQW) structured Distributed Feed-Back (DFB) laser
diode module with Single Mode Fiber.
•
•
•
PEAK OUTPUT POWER
Pf = 10 mW MIN.
INTERNAL THERMO-ELECTRIC COOLER AND
ISOLATOR
It is designed as directly modulation light source and
ideal for optical transmission systems. The device is
available for Dense Wavelength Division Multiplexing
(DWDM) wavelengths based on ITU-T recommendations,
enabling a wide range of applications.
HERMETICALLY SEALED 14-PIN BUTTERFLY
PACKAGE
•
•
•
SINGLE MODE FIBER PIGTAIL
WIDE OPERATION TEMPERATURE RANGE
AVAILABLE FOR DWDM WAVELENGTHS BASED ON
ITU-T RECOMMENDATIONS
ELECTRO-OPTICAL CHARACTERISTICS (TLD = TSET, TC = -20 + 85°C)
SYMBOL
PARAMETER AND CONDITIONS
UNIT
MIN
TYP
MAX
Tset
VF
Laser Set Temperature
°C
V
30
45
2.0
40
Forward Voltage, Pf = 10 mW
0.9
Ith
Threshold Current
mA
mW
mA
μW
W/A
nm
20
Pf
Optical Output Power from Fiber, IF = Iop, TLD = Tset
Operation Current
10
Iop
125
100
Pth
Threshold Output Power, IF = Ith
η
Quantum Efficiency, CW
0.142
1 530
0.17
ITU-T*1
1
λp
Peak Emission Wavelength, Pf = 10 mW, CW, TLD = Tset
Spectral Line Width, Pf = 10 mW, CW, 3 dB down
Side Mode Suppression Ratio, Pf = 10 mW, under modulation
Input Impedance
1 562
5
Δν
MHz
dB
SMSR
ZIN
RIN
tr /tf
30
35
Ω
25
Relative Intensity Noise, Pf = 10 mW, 20 MHz to 3 GHz
dB/Hz
ps
−140
Rise and Fall Time, 20-80%/80-20%, Tc = 25°C
Input Return Loss, f = 50 MHz to 3 GHz
f = 3 GHz to 6 GHz
120
6
3
S11
dB
BW
DP
Band Width, −3 dB, Pf = 10 mW
Dispersion Penalty, Tc = 25°C*2
GHz
dB
2.5
2.0
Notes:
*1 Available for DWDM wavelengths based on ITU-T recommendation. Please refer to the ORDERING INFORMATION.
*2 2.48832 Gb/s, PRBS 223−1, duty cycle, Extinction Ratio ≥ 8.5 dB, BER = 10−10, NX8563LAS: 1 800 ps/nm(100 km),
NX8563LA: 4 320 ps/nm(240 km)
California Eastern Laboratories