
NEC's EA MODULATOR
AND WAVELENGTH MONITOR
INTEGRATED 1550 nm
MQW-DFB LASER DIODE MODULE
FOR 10 Gb/s APPLICATIONS
NX8560SJ
Series
FEATURES
• 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
NEC's NX8560SJ Series is an Electro-Absorption (EA) Mod u -
la tor and wavelength monitor intergraded, 1550 nm Multiple
Quantum Well (MQW) struc tured Distributed Feed-Back (DFB)
laser diode module. It is capable of transmitting up to 40 km
standard single mode Þ ber (dispersion: 800 ps/nm) for 10 Gb/s
applications with built in wavelength monitor.
DESCRIPTION
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.
PART NUMBER NX8560SJ Series
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
TSET Laser Set Temperature 1 °C 20 35
Iop Operating Current mA 50 60 80
VCENTER Modulation Center Voltage V -2.0 -0.5
VMOD Modulation Voltage V 2 3
VFLD Forward Voltage of LD, IFLD = Iop V 2.0
ITH Threshold Current mA 7 20
Pf Optical Output from Fiber, Under modulation2 dBm -3 -2
λp Peak Emission Wavelength, IFLD = Iop, VEA = 0 V, TLD = TSET nm 1528 ITU-T3 1564
SMSR Side Mode Suppression Ratio, IFLD = Iop, VEA = 0 V dB 30 > 37
ER Extinction Ratio, Under modulation2 dB 10 11
tr Rise Time, 20-80%, Under modulation2 ps 40
tf Fall Time, 80-20%, Under modulation2 ps 40
DP Dispersion Penalty, 800 ps/nm under modulation2, 4 dB 2.0
IS Optical Isolation dB 23
S11 RF Return Loss,
IFLD = IOP, VEA = 1 V, 50 Ω, f = 130 MHz to 5 GHz dB -10 -8
IFLD = IOP, VEA = 1 V, 50 Ω, f = 5 GHz to 10 GHz dB -8 -5
ELECTRO-OPTICAL CHARACTERISTICS (TLD = TSET, TC = -5 + 70°C, BOL unless otherwise speciÞ ed)
California Eastern Laboratories
PRELIMINARY DATA SHEET