PRELIMINARY DATA SHEET
NEC's EA MODULATOR
AND WAVELENGTH MONITOR
INTEGRATED 1550 nm
NX8560SJ
Series
MQW-DFB LASER DIODE MODULE
FOR 10 Gb/s APPLICATIONS
FEATURES
DESCRIPTION
NEC's NX8560SJ Series is an Electro-Absorption (EA) Modu-
lator and wavelength monitor intergraded, 1550 nm Multiple
QuantumWell(MQW)structuredDistributedFeed-Back(DFB)
laser diode module. It is capable of transmitting up to 40 km
standardsinglemodeÞber(dispersion:800ps/nm)for10Gb/s
applications with built in wavelength monitor.
• INTEGRATED ELECTRO-ABSORPTION MODULATOR
• WAVELENGTH MONITOR FUNCTION
• 10 Gb/s TRANSMISSION UP TO 40 KM SSMF
• 7-PIN BUTTERFLY PACKAGE WITH GPO CONNECTOR
• AVAILABLE FOR DWDM WAVELENGTH
BASED ON ITU-T RECOMMENDATION
ELECTRO-OPTICAL CHARACTERISTICS (TLD = TSET, TC = -5 + 70°C, BOL unless otherwise speciÞed)
PART NUMBER
NX8560SJ Series
SYMBOLS
PARAMETERS AND CONDITIONS
Laser Set Temperature 1
Operating Current
Modulation Center Voltage
Modulation Voltage
Forward Voltage of LD, IFLD = Iop
Threshold Current
Optical Output from Fiber, Under modulation2
Peak Emission Wavelength, IFLD = Iop, VEA = 0 V, TLD = TSET
Side Mode Suppression Ratio, IFLD = Iop, VEA = 0 V
Extinction Ratio, Under modulation2
Rise Time, 20-80%, Under modulation2
Fall Time, 80-20%, Under modulation2
Dispersion Penalty, 800 ps/nm under modulation2, 4
Optical Isolation
UNITS
°C
mA
V
V
V
mA
dBm
nm
dB
dB
ps
ps
dB
dB
MIN
20
50
TYP
MAX
35
80
-0.5
3
2.0
20
TSET
Iop
VCENTER
VMOD
VFLD
ITH
60
2
-2.0
7
-2
ITU-T3
> 37
11
Pf
λp
-3
1528
30
1564
SMSR
ER
tr
tf
DP
10
40
40
2.0
IS
23
S11
RF Return Loss,
IFLD = IOP, VEA = 1 V, 50 Ω, f = 130 MHz to 5 GHz
dB
dB
-10
-8
-8
-5
IFLD = IOP, VEA = 1 V, 50 Ω, f = 5 GHz to 10 GHz
Note:
1. TSET is a certain point between 20°C and 35°C for ITU-T grid wavelength.
2. 40 km SMF under modulation, 9.95328 GB/S, PRBS 223_1, VEA = VCENTER ± 1/2VMOD, IFLD = Iop, NEC Test System
Vcenter: a certain point between -2.0 V and -0.5 V.
Vmod: a certain point 3 V or below.
Iop: a certain point between 50 mA and 80 mA.
3. Available for DWDM wavelength based on ITU-T recommendations (50 GHz grid). Please refer to ordering information.
4. BER = 10-10
.
California Eastern Laboratories
