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 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 speci ed)
California Eastern Laboratories
PRELIMINARY DATA SHEET
ABSOLUTE MAXIMUM RATINGS1
(TC = 25°C, unless otherwise speci ed)
SYMBOLS PARAMETERS UNITS RATINGS
Pf Optical Output from Fiber mW 10
IFLD Forward Current of LD mA 150
VRLD Reverse Voltage of LD V 2.0
VFm Forward Voltage of Modulator V 1
VRm Reverse Voltage of Modulator V 4
IFPD Forward Current of PD mA 1
VRPD Reverse Voltage of PD V 10
IC Cooler Current A 1.5
VC Cooler Voltage V 2.5
TC Operating Case Temperature °C -20 to +70
TSTG Storage Temperature °C -40 to +85
TSLD Lead Soldering °C 350
Temperature (3 s)
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
PART NUMBER NX8560LJ SERIES
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
Im Monitor Current, VRPD = 5V, IFLD = IOP, VEA = 0 V µA 30 1100
ID Dark Current, VRPD = 5 V, VEA = 0 V nA 10
Ct Terminal Capacitance, VRPD = 5 V, f = 1 Mhz pF 15
γ1 Tracking Error, Im = const. dB 0.5
ELECTRO-OPTICAL CHARACTERISTICS (Applicable to Monitor PD: TLD = Tset, TC = -20 to +70°C)
Pf
(mW) TLD = TC = 25°C
(at Pf (25°C) = Pop)
TLD = 25°C, TC = -20 to +70°C
Pop
0
Pf
Im
Im
Note:
1. γ = 10 log Pf
Pop
PART NUMBER NX8560LJ SERIES
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
R Thermistor Resistance, TLD = 25°C k 9.5 10.0 10.5
B B Constant K 3350 3450 3550
IC Cooler Current, TLD = Tset A 1.2
VC Cooler Voltage, TLD = Tset V 2.4
ELECTRO-OPTICAL CHARACTERISTICS (Applicable to Thermistor and TEC: TC = -20 to +70°C)
NX8560LJ SERIES
NX8560LJ SERIES
TYPICAL PERFORMANCE CURVES (TC = 25°C unless otherwise speci ed)
OPTICAL OUTPUT POWER FROM FIBER
vs. FORWARD CURRENT
Reverse Voltage of Modulator, VREA (V)
TExtinction Ratio, ER (dB)
EXTICTION RATIO vs.
MODULAR VOLTAGE
Optical Output Power from Fiber, Pf (mW)
Forward Current, IF (mA)
INPUT RETURN LOSS
CHARACTERISTICS (S11)
Case Temperature, Tc (°C)
Input Return Loss, S11 (dB)
ERROR RATE
CHARACTERISTICS
Bit Error Rate
Monitor Current, Im (mA)
VREA = 0 V
0.5 V
1 V
2 V
3 V
4
3
2
1
050 100 150 200
0
5
10
15
20
25
0123
0
-5
-10
-15
-20
-25
051015 20
9.95328 Gb/s
PRBS 223 -1,
Tx: NX8560LJ,
Rx: NR3470MU
back to back
after 800 ps/nm
10-4
10-5
10-6
10-7
10-8
10-9
10-10
10-11
10-12
–22 –20 –18 –16 –14 –12
Frequency, f (GHz) Average Recieved Power, P (dBm)
Remark:
1. The graphs indicate nominal characteristics.
NX8560LJ SERIES
Wavelength Code ITU-T Wavelength1
(nm) Frequency
(THz) Wavelength Code ITU-T Wavelength1
(nm) Frequency
(THz)
287 1528.77 196.10 501 1550.11 193.40
295 1529.55 196.00 509 1550.91 193.90
303 1530.33 195.90 517 1551.72 193.20
311 1531.11 195.80 525 1552.52 193.10
318 1531.89 195.70 533 1553.32 193.00
326 1532.68 195.60 541 1554.13 192.90
334 1533.46 195.50 549 1554.94 192.80
342 1534.25 195.40 557 1555.74 192.70
350 1535.03 195.30 565 1556.55 192.60
358 1535.82 195.20 573 1557.36 192.50
366 1536.60 195.10 581 1558.17 192.40
373 1537.39 195.00 589 1558.98 192.30
381 1538.18 194.90 597 1559.79 192.20
389 1538.97 194.80 606 160.60 192.10
397 1539.76 194.70 614 1561.41 192.00
405 1540.55 194.60 622 4562.23 191.90
413 1541.36 194.50 630 1563.04 191.80
421 1542.14 194.40
429 1542.91 194.30
437 1543.73 194.20
445 1544.52 194.10
453 1545.32 194.00
461 1546.11 193.90
469 1546.91 193.90
477 1547.71 193.70
485 1548.51 193.60
493 1549.31 193.50
ORDERING INFORMATION
NX8560LJ -
CC : SC-UPC connector (standard)
BC : FC-UPC connector (option)
Without wavelength code: Wavelength is a certain point between
1528.77 to 1563.04 nm
With Wavelength code : Refer to Table A
Table A: DWDM wavelength base on ITU-T recommendations (@ TLD = Tset)
Note:
1. The value which omitted and computed the 3rd place below the decimal point
Life Support Applications
These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected
to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify
CEL for all damages resulting from such improper use or sale.
OUTLINE DIMENSIONS (Units in mm, unless otherwise speci ed ±0.2 mm tolerance)
PARAMETER UNITS SPECIFICATIONS
Mode Field Diameter µm 9.3±0.5
Cladding Diameter µm 125±1
Tight Buffer Diameter µm 900±100
Cut-off Wavelength nm <1270
Attenuation 1525 to 1575 dB/km <0.3
Minimum Fiber Bending Radius mm 30
Fiber Length mm 1000 MIN
Flammability UL1581 VW-1
OPTICAL FIBER CHARACTERISTICS
8.99±0.5 mm
35±2 mm
Fiber Length: 1000 mm MIN.
-BC : FC-UPC Connector
-CC : SC-UPC Connector
Optical Fiber (SMF)
Length : 1000 MIN
30.0
0.75
20.83±0.13
26.04±0.13
15.24
71
2.54
22.0 MAX
4 - φ2.67
1.25
0.9
10 MIN
8.89±0.13 12.7±0.15
6.0
8.0
#7 #1
Cooler
5.4
5.08
+-
PD
LD
Thermistor
MOD
7.8 4.83
05/16/2003
NX8560LJ SERIES
PIN No. FUNCTION
1 THERMISTOR
2 THERMISTOR
3 LD DC Bias
4 PD ANODE
5 PD CATHODE,
6 COOLER ANODE
7 COOLER CATHODE
PIN CONNECTIONS
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