NEC's EA MODULATOR
INTEGRATED InGaAsP MQW DFB
LASER DIODE IN BUTTERFLY PACKAGE
WITH GPO CONNECTOR
FOR 10 Gb/s DWDM APPLICATIONS
NX8560LJ
SERIES
FEATURES
• INTEGRATED ELECTROABSORPTION MODULATOR
• UP TO 40 km TRANSMISSION CAPABILITY
WITH STAN DARD SINGLE MODE FIBER
(dispersion 800 ps/nm)
• LOW MODULATION VOLTAGE
• 7-PIN BUTTERFLY PACKAGE WITH GPO™ CONNECTOR
• AVAILABLE FOR DWDM WAVELENGTH
BASED ON ITU-T RECOMMENDATION
NEC's NX8560LJ Series are an Electro-Absorption (EA) Mod u -
la tor integrated, 1550 nm Multiple Quantum Well (MQW) struc-
tured Distributed Feed-Back (DFB) laser diodes. It is capable
of transmitting up to 40 km for 10 Gb/s applications by using
standard fi ber dispersion 800 ps/nm and is available for Dense
Wavelength Mul ti plex ing (DWDM) wavelength based on ITU-T
rec om men da tions.
DESCRIPTION
Note:
1. NX8560LJ Series: TSET is a certain point between 20°C and 35°C.
NX8560LJXXX Series: TSET is set at 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 (100 GHz grid).
Please refer to ordering information.
4. BER = 10-10.
PART NUMBER NX8560LJ 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 2.0 3.0
VFLD Forward Voltage of LD, IFLD = Iop V 2.0
ITH Threshold Current, TLD = Tset mA 7 20
PfOptical Output from Fiber, Under modulation2dBm -3 -2
λpPeak Emission Wavelength, IFLD = Iop, VEA = 0 V nm 1528 ITU-T31563
SMSR Side Mode Suppression Ratio, IFLD = Iop, VEA = 0 V dB 30 >37
ER Extinction Ratio, Under modulation2dB 10 >11
trRise Time, 20-80%, Under modulation2ps 40
tfFall Time, 80-20%, Under modulation2ps 40
DP Dispersion Penalty, 40 km SMF under modulation2, 4 dB 2.0
ISOL Optical Isolation dB 23
S11 RF Return Loss,
IFLD = IOP, VEA = -1 V, f = 130 MHz to 5 GHz
IFLD = IOP, VEA = -1 V, f = 5 GHz to 10 GHz dB
dB -10
-8 -8
-5
ELECTRO-OPTICAL CHARACTERISTICS (TLD = Tset, TC = 25°C, BOL unless otherwise specifi ed)
California Eastern Laboratories
PRELIMINARY DATA SHEET