Preliminary
Sumitomo Electric Industries, Ltd.
Part No.
: SLT544A-xxA Series
Document No. : HUW0825015-01A
Date of issue
: Nov. 21 2008
Preliminary Specification
of
1.5μm Tunable Laser Diode Module
SLT544A-xxA Series
RoHS Compliant
Sumitomo Electric Industries, Ltd.
1/9
Preliminary
Sumitomo Electric Industries, Ltd.
Part No.
: SLT544A-xxA Series
Document No. : HUW0825015-01A
Date of issue
: Nov. 21 2008
1. General
SLT544A-xxA series are 1.5µm InGaAsP/InP MQW DFB laser diode modules designed for a
direct modulation optical source of WDM (Wavelength Division Multiplexing) application.
SLT544A-xxA can be tuned to 4 adjacent channels of 100GHz spacing by controlling the LD
chip temperature.
A laser diode chip is mounted on a 14 pin butterfly package integrated with an optical
isolator, an InGaAs monitor PD, a thermo-electric cooler and a single mode fiber pigtail.
The
lead content of this isolator is less than 1000ppm.
2. Package dimension and pin assignment
(unit : mm,
tolerance :
±0.15
unless otherwise noted)
(*1)
PIN7
PIN1
PIN8
PIN14
*Note1: Lead pin plating is Au over Ni.
1000
±
100
(23)
Optical connector
Pin No.
1
2
3
4
5
6
7
Function
Thermistor
Thermistor
LD Cathode (DC)
Monitor PD Anode
Monitor PD Cathode
TEC Anode
TEC Cathode
Pin No.
14
13
12
11
10
9
8
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Function
NC
Case Ground
LD Cathode (RF)
LD Anode (Case Ground)
NC
Case Ground
Case Ground
Preliminary
3. Absolute maximum ratings
Parameter
Storage temperature
Operating case temperature
LD forward current
LD reverse voltage
PD reverse current
PD reverse voltage
Thermistor current
Thermistor voltage
TEC current (*2)
Electro static Discharge (ESD) (*3)
Package mounting screw torque(*4)
Lead soldering temperature
Lead soldering time
Symbol
Tstg
Tc
IfL
VrL
IrP
VrP
Itherm
Vtherm
Ic
VESD
Npt
Stemp
Stime
Min.
-40
-30
−
−
−
−
−
−
−
−
−
−
−
Sumitomo Electric Industries, Ltd.
Part No.
: SLT544A-xxA Series
Document No. : HUW0825015-01A
Date of issue
: Nov. 21 2008
Max.
85
70
150
2
2
15
0.5
2.5
1.4
500
0.2
260
10
Unit
°C
°C
mA
V
mA
V
mA
V
A
V
Nm
°C
sec
Note *2 TEC should be properly feedback controlled by monitoring submount temperature using
a thermistor, so that neither submount nor case temperature exceeds the maximum
storage temperature. Exceeding the maximum storage temperature could cause
deterioration of module performance.
Note *3 A human-body model (HBM, C=100pF, R=1.5kΩ) is employed.
Note *4 Without buffer materials under the package
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Preliminary
4. Electrical and optical characteristics
(Unless otherwise noted,
Tset
=16°C to 54°C, BOL)
Sumitomo Electric Industries, Ltd.
Part No.
: SLT544A-xxA Series
Document No. : HUW0825015-01A
Date of issue
: Nov. 21 2008
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Threshold current
Ith
CW
−
10
40
mA
Operating current
Iop
CW, Pf=Pop
−
−
(*5)
mA
Slope efficiency
Se
CW, Pf=0~Ppeak(*6)
(*5)
−
−
W/A
Operating voltage
Vf
CW, Pf=Pop
0.9
−
2
V
Monitor current
Im
CW, Pf=Pop
15
−
800
μA
Monitor dark current
Id
VrP=5V
−
1
30
nA
Monitor capacitance
C
VrP=5V, f=1MHz
−
−
20
pF
Bandwidth
BW
-3dB, Pf=Pop
3.0
−
−
GHz
Relative intensity noise
RIN
20MHz to 3GHz
−
−
-140 dB/Hz
Rise time
Tr
20 to 80%, Tc=25
°C
−
−
120
ps
Fall time
Tf
20 to 80%, Tc=25
°C
−
−
120
ps
Peak wavelength
λp
CW, Pf=Pop
−
(*5)
−
nm
Peak wavelength drift (aging)
Dλ
CW, Pf=Pop, 25years
−
−
+/-0.05
nm
CW, Pf=Pop, Tc=-30
°C
to
Peak wavelength drift
−
−
+/-0.06
nm
(temperature)
70
°C
Side mode suppression ratio SMSR
CW, Pf=Pop, Tc=25
°C
30
35
−
dB
Tracking error
TE
Im=constant
−
−
+/-0.6
dB
Optical Isolation
ISO
Tc=-30~70°C
25
−
−
dB
Dispersion penalty
Pd
(*7), (*8)
−
−
2
dB
Note *5 See ordering information (Section 7)
Note *6 Ppeak=2 x Pop
Note *7
The following test conditions(SEI’s test setup) is to be used.
2.48832Gbit/s, PRBS 2
23
-1 NRZ, 50% duty cycle, Extinction Ratio
≥
8.5dB (typ.9dB)
Note *8 Pf=Pop; BER@10
-10
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Preliminary
5. Thermal characteristics
Parameter
Thermistor resistance
Thermistor B constant.
TEC current
TEC voltage
Symbol
Rth
B
Ic
Vc
Condition
T
LD
=35°C
25°C/75°C
Tset, Tc =70°C
Pf=5mW, BOL
Sumitomo Electric Industries, Ltd.
Part No.
: SLT544A-xxA Series
Document No. : HUW0825015-01A
Date of issue
: Nov. 21 2008
Min.
6.1
3800
−
−
Typ.
6.6
3900
−
−
Max.
7.1
4000
1.1
2.2
Unit
kΩ
K
A
V
6. Fiber specification
Parameter
Fiber type
Mode field diameter
Cladding diameter
Outer jacket diameter
Bending radius
Optical connector
Min.
Typ.
Max.
Single mode fiber
8.5
9.5
10.5
122
125
128
0.9
−
−
40
−
−
See ordering information (Section 7)
Unit
−
μm
μm
mm
mm
−
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