The NX8571 Series is a 1 550 nm Multiple Quantum Well (MQW)
structured Distributed Feed-Back (DFB) laser diode module with wavelength
monitor function. This device is temperature tunable over 4 × 50 GHz
channels. Available at both C-band (1530.334 to 1565.087 nm) and L-band
(1565.496 to 1608.760 nm) ITU-T grid wavelengths.
This device is designed as CW light source and ideal for transmission
systems in which external modulators are used.
FEATURES
• Wavelength monitor function (Etalon Filter, Wavelength monitor PD)
• Optical output power: P
• Available for DWDM wavelengths based on ITU-T recommendations
(50 GHz grid)
• 4-channel wavelength tunable capability for 50 GHz-spacing
(NX8571S××××D)
• Internal thermo-electric cooler and isolator
• Hermetically sealed 14-pin butterfly package
• Polarization maintain fiber pigtail
f = 10 mW MIN.
LASER DIODE
Document No. PL10136EJ03V0DS (3rd edition)
Date Published June 2004 CP (K)
NEC Compound Semiconductor Devices, Ltd. 2002, 2004
PACKAGE DIMENSIONS (UNIT: mm)
15.24
21.8±0.3
1.0
0.8
1
14
φ
4– 2.67
1.25
10 MIN.
8.89±0.13
2.54
7
8
0.5
20.83±0.25
26.04±0.25
0.9
φ
5.0
φ
6.0±0.2
φ
12.7±0.2
TOP VIEW
#7#1
+
–
Cooler
PD (λp)
#8#14
PD (Pf)
Thermistor
LD
PIN CONNECTIONS
NX8571 Series
5.4
8.2±0.2
0.3
1.0
29.97±0.25
Optical Fiber (PMF)
Length: 1 000 MIN.
5.15
Pin No.Pin No.
1
2
3
4
5
6
7
Function
Thermistor
Thermistor
LD Cathode
f
) Anode
PD (P
PD Cathode
Cooler Anode
Cooler Cathode
OPTICAL FIBER CHARACTERISTICS
Parameter Specification Unit
Outer Diameter 0.9±0.1 mm
Minimum Fiber Bending Radius 25 mm
Fiber Length 1 000 MIN. mm
PMF
Fiber Length: 1 000 mm MIN.
Function
8
GND
9
GND
10
PD (λ
11
LD Anode
12
LD Cathode
13
LD Anode
14
NC
FC-PC Connector
p
) Anode
2
Data Sheet PL10136EJ03V0DS
NX8571 Series
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Ratings Unit
Forward Current of LD IF 300 mA
Reverse Voltage of LD VR 2.0 V
Forward Current of PD IF 10 mA
Reverse Voltage of PD VR 20 V
Operating Case Temperature TC−20 to +70 °C
Storage Temperature Tstg−40 to +85 °C
Lead Soldering Temperature Tsld260 (10 sec.) °C
Parameter Symbol Conditions MIN. TYP. MAX. Unit
Laser Set Temperature Tset Single channel 20 35 °C 4 channel tunable 10 45
Forward Voltage VF Pf = 10 mW 0.9 1.2 2.5 V
Threshold Current Ith20 40 mA
Operation Current Iop Pf = 10 mW 70 125 mA
Optical Output Power from Fiber Pf IF = 125 mA, TLD = Tset 10 mW
Peak Emission Wavelength
Wevelength Stability
Spectral Line Width
Side Mode Suppression Ratio SMSR Pf = 10 mW, CW 35 45 dB
Relative Intensity Noise RIN Pf = 10 mW, 20 MHz to 3 GHz −150 dB/Hz
Optical Isolation Is Pf = 10 mW, CW 30 dB
Polarization Extinction Ratio
*2
λ
−
∆
ext Pf = 10 mW, CW 20 dB
f = 10 mW, CW, TLD = Tset 1 530 ITU-T
P
p
TLD = Tset, applicable to wavelength
monitor, E.O.L
f = 10 mW, CW, 3 dB down 1 2 MHz
P
ν
−20 +20 pm
*1
1 609 nm
*1 Available for DWDM wavelengths based on ITU-T recommendations (50 GHz grid).
Please refer to Table A.
*2 Polarization state of LD is aligned parallel to the slow axis.
Data Sheet PL10136EJ03V0DS
3
NX8571 Series
ELECTRO-OPTICAL CHARACTERISTICS (Applicable to Monitor PD: TLD = Tset, TC = −5 to +70°C)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
Monitor Current (Pf Monitor) Im (Pf) Pf = 10 mW, VR = 5 V 20 200
Monitor Current (λp Monitor) Im (λp) Pf = 10 mW, VR = 5 V, Locking point 10 100
Operation Region
Discrimination Slope
*1
*1
Im (λ) 25 75 %
90 pm
1−λ2⏐
⏐λ
0.05
η
λ
µ
µ
µ
A/pm
Dark Current ID VR = 5 V 2 10 nA
Tracking Error γ
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Thermistor and TEC: T
Parameter Symbol Conditions MIN. TYP. MAX. Unit
Thermistor Resistance R TLD = 25°C 9.5 10.0 10.5 kΩ
B Constant B TLD = 25°C 3 350 3 450 3 550 K
Cooler Current IC
Cooler Voltage VC
LD = Tset, TC = −5 to +70°C)
∆
T = 70 − Tset, Pf = 10 mW 1.5 A
∆
T = 70 − Tset, Pf = 10 mW 3.0 V
4
Data Sheet PL10136EJ03V0DS
ORDERING INFORMATION
NX8571SC-BA
With FC-PC connector
Without : Single channel
D: 4 channel tunable
Wavelength code : Refer to Table A
NX8571 Series
Package code
Table A: DWDM wavelength base on ITU-T recommendations (@ TLD = Tset) (1/7)
Ambient Temperature TA (˚C)Laser Set Temperature T
75151020253035
Remark The graphs indicate nominal characteristics.
COOLER ELECTRIC POWER CONSUMPTION
vs. LASER SET TEMPERATURE
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Cooler Electric Power Consumption (W)
0.0
C
= 70˚C
T
set
(˚C)
12
Data Sheet PL10136EJ03V0DS
NX8571 Series
REFERENCE
Document Name Document No.
OPTICAL SEMICONDUCTOR DEVICES FOR FIBEROPTIC COMMUNICATIONS SELECTION GUIDE PL10161E
Opto-Electronics Devices Pamphlet PX10160E
Data Sheet PL10136EJ03V0DS
13
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.
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content of its products represents knowledge and belief as of the date that it is provided. CEL bases its knowledge and belief on information
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