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NEC's 1550 nm InGaAsP MQW DFB NX8504BE-CC LASER DIODE IN COAXIAL PACKAGE NX8504CE-CC for 622 Mb/s APPLICATION
FEATURES
* PEAK EMISSION WAVELENGTH: P = 1550 nm * OPTICAL OUTPUT POWER: Pf = 2.0 mW * INTERNAL OPTICAL ISOLATOR * InGaAs MONITOR PIN-PD * WIDE OPERATING TEMPERATURE RANGE: TC = -10 to +85C * WITH SC-UPC CONNECTOR * BASED ON TELCORDIA RELIABILITY
DESCRIPTION
NEC's NX8504BE-CC and NX8504CE-CC are 1550 nm Distributed Feed-Back (DFB) laser diode coaxial modules with optical isolator. These modules are ideal as a light source for Synchronous Digital Hierarchy (SDH) system, STM-4, long-haul L-4.2, L-4.3 ITU-T recommendations.
ELECTRO-OPTICAL CHARACTERISTICS (TC = -10 to +85C, unless otherwise specified)
PART NUMBER SYMBOLS Pf VOP ITH PTH IMOD PARAMETERS AND CONDITIONS Optical Output Power from Fiber, CW Operating Voltage, Pf = 2.0 mW Threshold Current Threshold Output Power, IF = ITH Modulation Current Differential Efficiency Pf = 2.0 mW, TC = 25C Pf = 2.0 mW TC = +25C UNITS mW V mA mA W mA mA W/A W/A dB 11 9 0.060 0.036 -3 20 0.100 -1.6 2 MIN NX8504BE-CC, NX8504CE-CC TYP 2.0 1.1 15 1.6 25 50 100 35 55 0.150 0.200 MAX
d
d
Pf = 2.0 mW, TC = 25C Pf = 2.0 mW Temperature Dependence of Differential Efficiency, d (@ TC C) d = 10 log d (@ 25 C) Kink, Pf = Up to 2.4 mW (Refer to defenitions) Peak Emission Wavelength, Pf = 2.0 mW Temperature Dependence of Peak Emission Wavelength Spectral Width, Pf = 2.0 mW, -20 dB down width Side Mode Suppression Ratio, Pf = 2.0 mW Rise Time, 10 to 90%, Ppk = 2.0 mW, IF = ITH Fall Time, 90 to 10%, Ppk = 2.0 mW, IF = ITH Monitor Current, VR = 5 V, Pf = 2.0 mW Monitor Dark Current VR = 5 V, TC = 25 C VR = 5 V
Kink p /T SMSR tr tf Im ID Ct LINm 1
% nm nm/C nm dB ns ns A nA nA pF % dB 0.5 200 1000 1.0 10 1.0 30 1530 1550 0.10 0.3 40
20 1570 0.12 1.0 0.5 0.5 2000 50 500 20 10 1.0
Monitor PD Terminal Capacitance, VR = 5 V, f = 1 MHz Linearity, VR = 5 V, Pf = 0.2 to 2.0 mW (Refer to defenitions) Tracking Error, Im = const. (Refer to defenitions)
California Eastern Laboratories
NX8504BE-CC, NX8504CE-CC ABSOLUTE MAXIMUM RATINGS1
(TC = 25C, unless otherwise specified) SYMBOLS IF Pf VR IF VR TC TSTG TSLD RH PARAMETERS Forward Current of LD Optical Output Power Reverse Voltage of LD Forward Current of PD Reverse Voltage of PD Operating Case Temperature Storage Temperature Lead Soldering Temperature (10 s) Relative Humidity, (noncondensing) UNITS mA mW V mA V C C C % RATINGS 150 5.0 2.0 2.0 15 -10 to +85 -40 to +85 260 85
Note: 1. Operation in excess of any one of these parameters may result in permanent damage.
PARAMETER DEFINITIONS
Kink : kink
(mW) 2.4 dPo PK dPK IF - d Pf IF - Pf
kink =
x 100 [%] PK dPK = dPo MAX PK 2.4 (mW)
|dPK|
0 (mA)
IF
Linearity : LINm
Pf (mW) 2.0
LINm =
PK
|dPL| x 100 [%] PL
PL dPL dPo 0.2 0 Im (mA)
dPL = dPo MAX 0.2 < PL < 2.0 (mW)
Tracking Error :
Pf (mW) TC = 25C
2.0 TC = -10 to +85C Pf
Pf = |10 log 2.0
| [dB]
0
Im
Im (mA)
NX8504BE-CC, NX8504CE-CC TYPICAL PERFORMANCE CURVES (TC = 25C, unless otherwise specified)
OPTICAL OUTPUT POWER vs. FORWARD CURRENT
4.0
25 C
4.0
OPTICAL OUTPUT POWER vs. MONITOR CURRENT
85 C
0C
OPtical Output Power , Pf (mW)
OPtical Output Power , Pf (mW)
TC
= -4
TC = -40C +25C 3.0 +85C
3.0
2.0
2.0
1.0
1.0
0
20
40
60
80
100
0.0
0.4
0.8
1.2
1.6
2.0
Forward Current, IF (mA)
Monitor Current, IM (mA)
OPERATING CURRENT AND THRESHOLD CURRENT vs. CASE TEMPERATURE
100
FOWARD CURRENT vs. FORWARD VOLTAGE
50
Threshold Current, ITH (mA) Operation Current, IOP (mA)
IOP at Pf = 2 mW
Forward Current, IF (mA)
40
30
10
ITH
20
10
1 -60 -40 -20 0 20 40 60 80 100
0
0.5
1.0
1.5
2.0
2.5
Case Temperature, TC (C)
Forward Voltage, VF (V)
TEMPERATURE DEPENDENCE OF DIFFERENTIAL EFFICIENCY FROM FIBER
TEMPERATURE DEPENDENCE OF PEAK EMISSION WAVELENGTH
1560
Differential Efficiency from Fiber, d (W/A)
0.18
Peak Emission Wavelength, p (nm)
-60 -40 -20 0 20 40 60 80 100
1555
0.12
1550
0.06
1545
0.00
1540 -60 -40 -20 0 20 40 60 80 100
Case Temperature, TC (C) Remark: The graphs indicate nominal characteristics
Case Temperature, TC (C)
NX8504BE-CC, NX8504CE-CC TYPICAL PERFORMANCE CURVES (TC = 25C, unless otherwise specified)
LONGITUDINAL MODE FROM FIBER
10 0
EYE DIAGRAM
Relative Intensity, (dB)
-10 -20 -30 -40 -50 -60 -70 1540.4 1550.4 1560.4
Relative Intensity, (dB)
622 Mb/s-NRZ, Ref = -14dB, 2 Vp-p (6 dB ATT), IB = ITH X 0.9
Time Base (500 ps/div.)
Wavelength, (nm)
ERROR RATE CHARACTERISTICS
10
-6
10-7
TC = -40C, Ref = -14 dB, 622 Mbps-NRZ, 2 Vp-p, IB = ITH X 0.9
10
-6
10-7
TC = 25C, Ref = -14 dB, 622 Mbps-NRZ, 2 Vp-p, IB = ITH X 0.9
10-6
10-7
TC = 85C, Ref = -14 dB, 622 Mbps-NRZ, 2 Vp-p, IB = ITH X 0.9
Bit Error Rate
10-8
10-8
10-8
10-9 10-10 10-11 10-12 -40 -39 -38 -37 -36 -35 -34 -33 back to back after 200 km
10-9 10-10 10-11 10-12 -40 -39 -38 -37 -36 -35 -34 -33 back to back after 200 km
10-9 10-10 10-11 10-12 -40 -39 -38 -37 -36 -35 -34 -33 back to back after 200 km
Average Received Power, P (dBm)
Remark: The graphs indicate nominal characteristics
NX8504BE-CC, NX8504CE-CC OUTLINE DIMENSIONS (Units in mm)
NX8504BE-CC
Optical Fiber(SMF) Length: 0.5 m With SC connector
NX8504CE-CC
3.20.25
0.9
Optical Fiber(SMF) Length: 0.5 m With SC connector
3.20.25
0.9
15 70.2 27.81.0
70.2
15
22.2
8.2
8.2
28.11.0
2.00.2 4.00.2 201.0 0.450.05
0.50.2 0.3 2.51.0 19.51.0 0.3 4-0.450.05
60.1 12.70.2 17.00.2
PIN CONNECTIONS
PD
16
2 3 1 4
PIN CONNECTIONS
P.C.D. = 2
43 12
4 7.20.3 3.70.3 1 LD CASE
3 2
P.C.D. = 2 2-2.5 70.2
2 PD 1 3 4 LD CASE
1.00.1
120.15 16.0
OPTICAL FIBER CHARACTERISTICS
PARAMETER SPEC Mode Field Diameter 9.51 Cladding Diameter 1252 Maximum Cladding Noncircularity 2 Maximum Core/Cladding Concentricity 1.6 Outer Diameter 0.90.1 Cut-off Wavelength 1100 to 1270 Minimum Fiber Bending Radius 30 Fiber Length 50050 Flammability UL1581 VW-1 UNIT m m % % mm nm mm mm
ORDERING INFORMATION
PART NUMBER AVAILABLE CONNECTOR DESCRIPTION Flat Mount Flange NX8504BE-CC With SC-PC Connector NX8504CE-CC Vertical Mount Flange
352 mm 8.990.5 mm
SC-UPC Connector
Fiber Length: 50050 mm
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.
03/03/2003
A Business Partner of NEC Compound Semiconductor Devices, Ltd.

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