NEC's EA MODULATOR
INTEGRATED InGaAsP MQW DFB
LASER DIODE MODULE
FOR 2.5 Gb/s ULTRALONG-REACH
360, 600, 240 km DWDM APPLICATIONS
NX8564LE
NX8565LE
NX8566LE
SERIES
FEATURES
• INTEGRATED ELECTROABSORPTION MODULATOR
• VERY LOW DISPERSION PENALTY:
Over 360 km (6480 ps/nm), NX8564LE-BC/CC
Over 600 km (10800 ps/nm), NX8565LE-BC/CC
Over 240 km (4320 ps/nm), NX8566LE-BC/CC
• LOW MODULATION VOLTAGE
• AVAILABLE FOR DWDM WAVELENGTH
BASED ON ITU-T RECOMMENDATION
100 GHz grid, refer to ORDERING INFORMATION
NEC's NX8564/8565/8566LE Series is an Electro-Absorption
(EA) modulator integrated, 1550 nm Multiple Quantum Well
(MQW) structured Distributed Feed-Back (DFB) laser diode.
The module is capable of 2.5 Gb/s applications of over 360
km, 600 km, 240 km ultralong-reach and available for Dense
Wavelength Division Multiplexing (DWDM) wavelengths
based on ITU-T recommendations, enabling a wide range of
applications.
DESCRIPTION
California Eastern Laboratories
PACKAGE DIMENSIONS (Units in mm, unless otherwise specified ±0.2mm)
NX8564/8565/8566LE SERIES
Pin
No.
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Function Function
PIN CONNECTIONS
GND
GND
NC
GND
Signal Input (MOD),
50 Ω RF Input
GND
GND
Thermistor
Thermistor
LD DC Bias
PD Anode
PD Cathode
Cooler Anode
Cooler Cathode
TOP VIEW
#8 #14
#7 #1
+- PD
LD MOD
Cooler
Thermistor
Optical Fiber (SMF)
Length : 900 MIN.
29.97±0.25
8.0
0.75
5.4
8.0
Nose
Fiber
20.83±0.13
26.04±0.13
7
8
1
14
1.25
15.24
2.54
4 – 2.67
φ
22.0 MAX.
12.7±0.15
10 MIN.
8.89±0.13
0.9
6.0 MAX.
NX8564/8565/8566LE SERIES
PARAMETER SPECIFICATION UNIT
Mode Field Diameter 9.3±0.5 μm
Cladding Diameter 125±1μm
Tight Buffer Diameter 900±100 μm
Cut-off Wavelength < 1270 nm
Attenuation 1525 to 1575 nm < 0.3 dB/km
Minimum Fiber Bending Radius 30 mm
Fiber Length 900 MIN. mm
Flammability UL1581 VW-1
OPTICAL FIBER CHARACTERISTICS
-CC : SC-UPC connector
-BC : FC-UPC connector
Fiber Length : 900 mm MIN.
35±2 mm
8.99±0.5 mm
NX8564/8565/8566LE SERIES
Table A: DWDM wavelength base on ITU-T recommendations (@ TLD = Tset) (1/2)
NX856 LE -
CC : SC-UPC connector
BC : FC-UPC connector (option)
Without wavelength code : Wavelength is a certain point between
1528 to 1565 nm, 1579 to 1609 nm
With wavelength code : Refer to Table A
4 : 360 km (6480 ps/nm)
5 : 600 km (10800 ps/nm)
6 : 240 km (4320 ps/nm)
Wavelength
Code
ITU-T Wavelength *1
(nm)
Frequency
(THz)
Wavelength Code ITU-T Wavelength *1
(nm)
Frequency
(THz)
287 1528.77 196.10 485 1548.51 193.60
295 1529.55 196.00 493 1549.31 193.50
303 1530.33 195.90 501 1550.11 193.40
311 1531.11 195.80 509 1550.91 193.30
318 1531.89 195.70 517 1551.72 193.20
326 1532.68 195.60 525 1552.52 193.10
334 1533.46 195.50 533 1553.32 193.00
342 1534.25 195.40 541 1554.13 192.90
350 1535.03 195.30 549 1554.94 192.80
358 1535.82 195.20 557 1555.74 192.70
366 1536.60 195.10 565 1556.55 192.60
373 1537.39 195.00 573 1557.36 192.50
381 1538.18 194.90 581 1558.17 192.40
389 1538.97 194.80 589 1558.98 192.30
397 1539.76 194.70 597 1559.79 192.20
405 1540.55 194.60 606 1560.60 192.10
413 1541.34 194.50 614 1561.41 192.00
421 1542.14 194.40 622 1562.23 191.90
429 1542.93 194.30 630 1563.04 191.80
437 1543.73 194.20 745 1574.54 190.40
445 1544.52 194.10 753 1575.36 190.30
453 1545.32 194.00 761 1576.19 190.20
461 1546.11 193.90 770 1577.02 190.10
469 1546.91 193.80 778 1577.85 190.00
477 1547.71 193.70 786 1578.68 189.90
*1 The value which omitted and computed the 3rd place below the decimal point
ORDERING INFORMATION
PART NUMBER PACKAGING
NX8564-AZ* Butterfly Package
NX8565-AZ*
NX8566-AZ*
*NOTE:
Please refer to the last page of this data sheet, “Compliance with EU Directives” for Pb-Free RoHS Compliance Infomation.
NX8564/8565/8566LE SERIES
Table A: DWDM wavelength base on ITU-T recommendations (@ TLD = Tset) (1/2)
Wavelength
Code
ITU-T Wavelength *1
(nm)
Frequency
(THz)
Wavelength
Code
ITU-T Wavelength *1
(nm)
Frequency
(THz)
795 1579.51 189.80 946 1594.64 188.00
803 1580.35 189.70 954 1595.48 187.90
811 1581.18 189.60 963 1596.33 187.80
820 1582.01 189.50 971 1597.18 187.70
828 1582.85 189.40 980 1598.04 187.60
836 1583.69 189.30 988 1598.89 187.50
845 1584.52 189.20 997 1599.74 187.40
853 1585.36 189.10 6006 1600.60 187.30
862 1586.20 189.00 6014 1601.45 187.20
870 1587.04 188.90 6023 1602.31 187.10
878 1587.88 188.80 6031 1603.16 187.00
887 1588.72 188.70 6040 1604.02 186.90
895 1589.56 188.60 6048 1604.88 186.80
904 1590.41 188.50 6057 1605.74 186.70
912 1591.25 188.40 6066 1606.60 186.60
921 1592.10 188.30 6074 1607.46 186.50
929 1592.94 188.20 6083 1608.32 186.40
937 1593.79 188.10
*1 The value which omitted and computed the 3rd place below the decimal point
NX8564/8565/8566LE SERIES
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATINGS UNIT
Optical Output Power from Fiber Pf10 mW
Forward Current of LD IFLD 150 mA
Reverse Voltage of LD VRLD 2.0 V
Forward Voltage of Modulator VFEA 1 V
Reverse Voltage of Modulator VREA 5 V
Forward Current of PD IFPD 1 mA
Reverse Voltage of PD VRPD 10 V
Cooler Current IC1.5 A
Cooler Voltage VC2.5 V
Operating Case Temperature TC−20 to +70 °C
Storage Temperature Tstg −40 to +85 °C
Lead Soldering Temperature Tsld 260 (10 sec.) °C
NX8564/8565/8566LE SERIES
ELECTRO-OPTICAL CHARACTERISTICS (TLD = Tset, TC = -20 to +70ºC, unless otherwise specified)
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Laser Set Temperature Tset *1 20 35 °C
Operating Current Iop 50 60 80 mA
Modulation Center Voltage Vcenter Under modulation *2 −1.5 −1.2 −0.5 V
Modulation Voltage Vmod Under modulation *2 2 3 V
Forward Voltage of LD VFLD IFLD = Iop 1.6 2.0 V
Threshold Current Ith 7 20 mA
Optical Output Power from Fiber PfIFLD = Iop, Under modulation *2
(NX8564/65LE Series)
−5−2 dBm
IFLD = Iop, Under modulation *2
(NX8566LE Series)
0 1
Peak Emission Wavelength λpIFLD = Iop, VEA = 0 V 1528 ITU-T *3 1565 nm
1574 1609
Side Mode Suppression Ratio SMSR IFLD = Iop, VEA = 0 V 30 > 37 dB
Extinction Ratio ER IFLD = Iop, Under modulation *2 10 > 11 dB
Rise Time trIFLD = Iop, 20-80%, Under modulation *2 70 125 ps
Fall Time tfIFLD = Iop, 80-20%, Under modulation *2 70 125 ps
Dispersion Penalty DP IFLD = Iop, Under modulation *2, 4 < 1.5 2.0 dB
Isolation Is23 dB
Relative Intensity Noise RIN 10 MHz to 10 GHz, VEA = 0 V, IFLD = Iop < −135 −130 dB/
Hz
Input Return Loss S11 IFLD = Iop, VEA = −1 V, 50 Ω,
f = 130 MHz to 2 GHz
−8 dB
IFLD = Iop, VEA = −1 V, 50 Ω,
f = 2 to 2.5 GHz
−5
*1 NX8564/65/66LE Series : Tset is a certain point between 20 and 35°C
NX8564/65/66LE××× Series : Tset is set at a certain point between 20 and 35°C for ITU-T grid wavelength
*2 NX8564LE : C-band 360 km, L-band 288 km (6480 ps/nm) SMF under modulation
NX8565LE : C-band 600 km, L-band 480 km (10800 ps/nm) SMF under modulation
NX8566LE : C-band 240 km, L-band 192 km (4320 ps/nm) SMF under modulation
2.48832 Gb/s, PRBS 223−1, VEA = Vcenter ± 1/2Vmod, IFLD = Iop, TLD = Tset, NEC Test System
Vcenter : a certain point between −1.5 and −0.5 V
Vmod : a certain point 3 V or below
Iop : a certain point between 50 and 80 mA
*3 Available for DWDM wavelengths based on ITU-T recommendations (100 GHz grid).
Please refer to ORDERING INFORMATION.
*4 BER = 10−10
NX8564/8565/8566LE SERIES
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Monitor PD: TLD = Tset, TC = -20 to +70ºC, unless otherwise specified)
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Monitor Current ImVRPD = 5 V, IFLD = Iop, VEA = 0 V 20 100 1000 μA
Dark Current IDVRPD = 5 V, VEA = 0 V 10 nA
Terminal Capacitance CtVRPD = 5 V, f = 1 MHz 15 pF
Tracking Error γ *1 Im = const. 0.5 dB
*1 Tracking Error: γ
Pf
(mW)
0Im
Im
TLD = Tset, TC = 25ºC
TLD = Tset, TC = -20 to +70ºC
Pop
Pfγ = 10 log [dB]
Pf
Pop
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Thermistor and TEC: TC = -20 to +70ºC)
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Thermistor Resistance R TLD = 25°C 9.5 10.0 10.5 kΩ
B Constant B 3350 3450 3550 K
TEC Current ICTLD = Tset 1.2 A
TEC Voltage VCTLD = Tset 2.4 V
NX8564/8565/8566LE SERIES
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Monitor PD: TLD = Tset, TC = -20 to +70ºC, unless otherwise specified)
4.0
3.0
2.0
1.0
050 100 150
0
5
10
15
20
2501 2 3
Optical Output Power from Fiber Pf (mW)
Forward Current IF (mA)
OPTICAL OUTPUT POWER FROM
FIBER (CW) vs. FORWARD CURRENT
EXTINCTION RATIO vs.
MODULATOR VOLTAGE
Extinction Ratio ER (dB)
Reverse Voltage of Modulator VREA (V)
2.01.51.00.5
0
50
100
150
FORWARD CURRENT vs.
FORWARD VOLTAGE
Forward Current IF (mA)
Forward Voltage VF (V)
50
30
20
10
1
2
3
5
0 6050 75
10 20 7030 40
Thermistor Resistance R (kΩ)
Ambient Temperature TA (ºC)
THERMISTOR RESISTANCE vs.
AMBIENT TEMPERATURE
SPECTRUM
Relative Intensity (dB)
Wavelength λ (nm)
-10
-30
-50
-70
0
-20
-40
-60
1540.0 1550.0 1560.0
1555.0
1545.0
ELECTRO-OPTICAL CHARACTERISTICS (TLD = Tset, TC = 25ºC, unless otherwise specified)
Remark The graphs indicate nominal characteristics.
NX8564/8565/8566LE SERIES
Remark The graphs indicate nominal characteristics.
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.
TX
RX
EDFA
120 km 120 km
120 km 120 km
120 km
2.5 Gb/s
EDFA
EDFA
EDFA
EDFA
EDFA
600 km STANDARD FIBER TRANSMISSION EXAMPLE (NX8565LE Series)
Test Setup
-40 -38 -36 -34 -32
10-6
10-7
10-8
10-9
10-10
10-11
10-12
ERROR RATE CHARACTERISTICS
Bit Error Rate
Received Power (dBm)
-42
10-5
10-4
10-13
back to back
after 600 km
EYE DIAGRAM
-30 -28
Back to Back (100 ps/div.)
After 600 km (100 ps/div.)
Relative Intensity (20 mV/div.)
Relative Intensity (10 mV/div.)
2.48832 Gb/s,
NRZ 2 VP-P,
PRBS 223-1,
Iop = 70 mA,
TC = 25ºC,
Vcenter = -1.2 V,
Vmod = 2.0 V
4590 Patrick Henry Drive
Santa Clara, CA 95054-1817
Telephone: (408) 919-2500
Facsimile:
(
408
)
988-0279
Subject: Compliance with EU Directives
CEL certifies, to its knowledge, that semiconductor and laser products detailed below are compliant
with the requirements of European Union (EU) Directive 2002/95/EC Restriction on Use of Hazardous
Substances in electrical and electronic equipment (RoHS) and the requirements of EU Directive
2003/11/EC Restriction on Penta and Octa BDE.
CEL Pb-free products have the same base part number with a suffix added. The suffix –A indicates
that the device is Pb-free. The –AZ suffix is used to designate devices containing Pb which are
exempted from the requirement of RoHS directive (*). In all cases the devices have Pb-free terminals.
All devices with these suffixes meet the requirements of the RoHS directive.
This status is based on CEL’s understanding of the EU Directives and knowledge of the materials that
go into its products as of the date of disclosure of this information.
Restricted Substance
per RoHS
Concentration Limit per RoHS
(values are not yet fixed)
Concentration contained
in CEL devices
-A -AZ
Lead (Pb) < 1000 PPM Not Detected (*)
Mercury < 1000 PPM Not Detected
Cadmium < 100 PPM Not Detected
Hexavalent Chromium < 1000 PPM Not Detected
PBB < 1000 PPM Not Detected
PBDE < 1000 PPM Not Detected
If you should have any additional questions regarding our devices and compliance to environmental
standards, please do not hesitate to contact your local representative.
Important Information and Disclaimer: Information provided by CEL on its website or in other communications concerting the substance
content of its products represents knowledge and belief as of the date that it is provided. CEL bases its knowledge and belief on information
provided by third parties and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better
integrate information from third parties. CEL has taken and continues to take reasonable steps to provide representative and accurate
information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. CEL and CEL
suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for
release.
In no event shall CEL’s liability arising out of such information exceed the total purchase price of the CEL part(s) at issue sold by CEL to
customer on an annual basis.
See CEL Terms and Conditions for additional clarification of warranties and liability.