1
Edition 1.3
July 2004
FLD5F20NP-E
FEATURES
Modulator Integrated DFB Laser Diode Module
CW operation of DFB laser section
Modulation voltage applied only to modulator section
High speed butterfly package with GPO connection
Built-in optical isolator, monitor photodiode, thermistor, and
thermo-electric cooler
Available at C-Band ITU-T grid wavelengths between 1529.55nm
thru 1563.05nm
APPLICATION
This MI DFB laser is intended for long reach applications (
80km)
at 10Gb/s.
DESCRIPTION
The Modulator Integrated DFB Laser (MI DFB Laser) has an electro-absorption modulator
monolithically integrated with a conventional Distributed Feed-Back (DFB) laser. The modulation
voltage is applied to the modulator section while the laser section operates CW allowing extremely low
wavelength chirping. Extinction ratios of more than 10 dB can be achieved with 2.6 Vp-p modulation.
The MI laser is installed in a butterfly type package. The module incorporates a highly stable optical
coupling system. The module includes an optical isolator, monitor photodiode, thermistor and a
thermo-electric cooler.
Parameter
Symbol
Storage Temperature
Tstg
+85
-
C
-40
Operating Case Temperature
+70
-
C
Top
-20
Optical Output Power
5
CW
mW
Pf
-
Laser Forward Current
150
CW
mA
IF
-
Laser Reverse Voltage
2
CW
V
VR
-
Modulator Forward Voltage
+1
CW
V
Vm
-5
Photodiode Forward Current
1
-
mA
-
-
10
-
V
Photodiode Reverse Voltage
VDR
-
10
260
C
sec
Lead Soldering Time
-
-
TEC Voltage
+2.5
Cooling
-
Heating
V
Vc
-
-2.5
TEC Current
+1.4
Cooling
-
Heating
A
Ic
-
-0.9
Thermistor Temperature
+70
-20
ATC Operation
C
Tth
Rating
Unit
Min.
Max.
ABSOLUTE MAXIMUM RATINGS (Top=25C, unless otherwise specified)
Condition
1,550nm Modulator
Integrated DFB Laser
2
FLD5F20NP-E
Parameter
Symbol
OPTICAL & ELECTRICAL CHARACTERISTICS (TL= Tset, Tc = 25C, BOL, unless otherwise specified)
Note (1) Eudyna Test System
9.95328Gb/s, PRBS=2
23
-1, IF=Iop, Vm=Vo and (Vo-Vmod)
Dispersion=1600ps/nm, Dispersion penalty at
Bit Error Rate = 1.0E-10
Note (2) Eudyna Test System
9.95328Gb/s, PRBS=2
23
-1, IF=Iop, Vm=Vo and (Vo-Vmod)
Note (3) Relation between resistance and temperature (
K) is: Rth (T) = Rth (25C)*exp[B(1/T-1/298)]
Note (4) Reference Table 1 for Wavelength Table
Unit
Limits
Max.
Type
Min.
Test Condition
Dispersion Penalty
dP
dB
2
-
-
Sidemode Suppression Ratio
SSR
dB
-
35
-
Note (2)
Wavelength Drift
-
nm
0.1
-0.1
-
after 20 years
Peak Wavelength
p
nm
Note (4)
Fall Time
Tf
ps
25
-
20
Rise Time
Tr
ps
25
-
20
IF=Iop,Vm=Vo, 20 to 80%
RF Return Loss
S11
dB
8
-
-
f=DC-5GHz, 50
Test Set,
Vm=Vo, IF=Iop
RF Return Loss
S11
dB
5
-
-
f=5-10GHz, 50
Test Set,
Vm=Vo, IF=Iop
Cut-off Frequency
S21
GHz
10
-
-
-3dB bandwidth,
Vm=Vo-0.5|Vmod |, IF=Iop
Optical Output Power
(Avg. Power)
Pf
dBm
-
-2.0
-
-
Wavelength Stability with
Case Temperature
-
pm/
C
1.0
-
-
Note (1)
Forward Voltage
VF
V
-
2.0
1.4
CW, IF=Iop
Optical Isolation
Is
dB
-
25
35
Tc=-20 to +70
C
TEC Power Dissipation
PTEC
W
3.3
-
-
IF=Iop
TEC Capacity
T
C
-
70-Tset
-
PTEC=3.3W, IF=Iop
TEC Current
ITEC
A
1.3
-
-
IF=Iop,
T=(70-Tset)[C]
TEC Voltage
VTEC
V
2.5
-
-
IF=Iop,
T=(70-Tset)[C]
Thermal Resistance
Rth
k
10.5
9.5
10.0
TL=25C , Tc=+25C
Thermistor B Constant (Note 3)
B
K
3,630
3,270
3,450
In-Band Ripple
G
dB
-
1.0
-
IF=Iop, f=0.1-10GHz,
Vm=Vo-0.5|Vmod |
Threshold Current
Ith
mA
-
30
-
CW, Vm=Vo
On Level Modulation
Vo
V
-0.7
0
-
-
Modulator Drive Voltage
Vmod
V
-
2.6
-
(Vo-Vmod)
-3.3V, Rext=10dB
Relative Intensity Noise
RIN
dB/Hz
-
-120
-
f=10 MHz to 8.5 GHz,
Vm=Vo, IF=Iop, 8% Reflection
Operating Current
Iop
mA
40
100
-
Extinction Ratio
Rext
dB
-
-
10
IF=Iop, Vm=Vo (at On Level)
Vm=Vo-Vmod (at Off Level)
1,550nm Modulator
Integrated DFB Laser
3
FLD5F20NP-E
10Gb/s
PRBS=2
23
-1
IF=Iop
Vm=Vo/(Vo-2)
Vo=-0.7V
TLD=25C
Pf
Im
Fig. 1 Lasing Spectrum
Wavelength (Span=1 nm/div, Res.=0.1nm)
Fig. 2 Output Power & Monitor Current
vs. Forward Current
Forward Current, IF (mA)
Output Power, Pf (mW)
Monitor Current (mA)
3
4
2
1
20
40
60
80
100
0
0
0.9
1.2
0.6
0.3
0
Relative Intensity (10 dB/div.)
1,550nm Modulator
Integrated DFB Laser
4
FLD5F20NP-E
Fig. 3 Extinction Ratio vs.
Modulation Applied Voltage
Fig. 4 Cut-off Frequency (S21)
Frequency, f (GHz)
Modulation Applied Voltage (V)
Extinction Ratio (dB)
Relative Output (dB)
-10
-5
0
-15
-20
0.5
1.0
1.5
2.0
2.5
0
5
10
15
20
0
-12
-9
-6
-3
0
3
6
9
12
Fig. 5 RF Return Loss (S11)
Frequency, f (GHz)
Return Loss (dB)
5
10
15
20
0
-30
-20
-10
0
Fig. 6 Transmission Characteristics
TLD=25
C,
ILD=90mA, Vm=-0.7V/2.0Vpp
9.95328Gb/s, PRBS=2
23
-1,
Dispersion penalty @BER=10
-10
=+0.7 dB: 1600 ps/nm
Back to Back
After 1600 ps/nm
Received Optical Power (dBm)
Bit Error Rate
10
-12
10
-10
10
-11
10
-8
10
-9
10
-6
10
-5
10
-7
10
-4
-23
-22
-17
-16
-18
-19
-20
-21
1,550nm Modulator
Integrated DFB Laser
5
FLD5F20NP-E
Table 1 Wavelength Table
Part Number
Wavelength (nm)
(TL=Tset)
(in vacuum)
Tolerance (nm)
Frequency (THz)
FLD5F20NP-E60 1529.55
196.00
0.1
FLD5F20NP-E59 1530.33
195.90
0.1
FLD5F20NP-E58 1531.12
195.80
0.1
FLD5F20NP-E57 1531.90
195.70
0.1
FLD5F20NP-E56 1532.68
195.60
0.1
FLD5F20NP-E55 1533.47
195.50
0.1
FLD5F20NP-E54 1534.25
195.40
0.1
FLD5F20NP-E53 1535.04
195.30
0.1
FLD5F20NP-E52 1535.82
195.20
0.1
FLD5F20NP-E51 1536.61
195.10
0.1
FLD5F20NP-E50 1537.40
195.00
0.1
FLD5F20NP-E49 1538.19
194.90
0.1
FLD5F20NP-E48 1538.98
194.80
0.1
FLD5F20NP-E47 1539.77
194.70
0.1
FLD5F20NP-E46 1540.56
194.60
0.1
FLD5F20NP-E45 1541.35
194.50
0.1
FLD5F20NP-E44 1542.14
194.40
0.1
FLD5F20NP-E43 1542.94
194.30
0.1
FLD5F20NP-E42 1543.73
194.20
0.1
FLD5F20NP-E41 1544.53
194.10
0.1
FLD5F20NP-E40 1545.32
194.00
0.1
FLD5F20NP-E39 1546.12
193.90
0.1
FLD5F20NP-E38 1546.92
193.80
0.1
FLD5F20NP-E37 1547.72
193.70
0.1
FLD5F20NP-E36 1548.51
193.60
0.1
FLD5F20NP-E35 1549.32
193.50
0.1
FLD5F20NP-E34 1550.12
193.40
0.1
FLD5F20NP-E33 1550.92
193.30
0.1
FLD5F20NP-E32 1551.72
193.20
0.1
FLD5F20NP-E31 1552.52
193.10
0.1
FLD5F20NP-E30 1553.33
193.00
0.1
FLD5F20NP-E29 1554.13
192.90
0.1
FLD5F20NP-E28 1554.94
192.80
0.1
FLD5F20NP-E27 1555.75
192.70
0.1
FLD5F20NP-E26 1556.56
192.60
0.1
FLD5F20NP-E25 1557.36
192.50
0.1
FLD5F20NP-E24 1558.17
192.40
0.1
FLD5F20NP-E23 1558.98
192.30
0.1
FLD5F20NP-E22 1559.79
192.20
0.1
FLD5F20NP-E21 1560.61
192.10
0.1
FLD5F20NP-E20 1561.42
192.00
0.1
FLD5F20NP-E19 1562.23
191.90
0.1
FLD5F20NP-E18 1563.05
191.80
0.1
1,550nm Modulator
Integrated DFB Laser
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