FEB06 (1/6)
MITSUBISHI (OPTICAL DEVICES)
FU-68SDF-x8yyMzzF
1.55
μm
DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
DESCRIPTION
Module type FU-68SDF-x802MzzF/-x810MzzF is a
1.55μm DFB-LD module with single mode optical fiber.
This module is suitable to a directly modulated light
source for use in 2.5Gb/s digital optical communication
systems.
This module is prepared in accordance with ITU-T
recommendation wavelength channel plan for Dense-
WDM transmission.
FEATURES
•
Input impedance is 25Ω
•
Multi quantum wells (MQW) DFB Laser Diode
module
•
Emission wavelength is in full C band
•
Single mode optical fiber pig-tail
•
Built-in optical isolator
•
Built-in thermal electric cooler
•
Butterfly package
•
With photodiode for optical output monitor
•
RoHS (2002/95/EC) complian
APPLICATION
High speed transmission systems (~2.5Gb/s)
Dense-WDM systems
ABSOLUTE MAXIMUM RATINGS
(Tld=Tset)
Parameter
Symbol
Laser diode
Optical output power
Pf
Conditions
CW
-x802MzzF
Rating
6
Unit
mW
-x810MzzF
15
Forward current
If
CW
150
mA
Reverse voltage
Vrl
-
2
V
Photodiode
Reverse voltage
Vrd
-
20
V
Forward current
Ifd
-
2
mA
Thermo-electric
Cooler current
Ipe
-
1.3
A
cooler (Note 1)
Cooler voltage
Vpe
-
3.1
V
Operating case temperature
Tc
-
-20 ~ 70
°C
Storage temperature
Tstg
-
-40 ~ 85
°C
Note 1) Even if the thermo-electric cooler (TEC) is operated within the rated conditions, uncontrolled current loading or
operation without heatsink may easily damage the module by exceeding the storage temperature range.
Thermistor resistance should be properly monitored by the feedback circuit during TEC operation to avoid the
catastrophic damage.
Mitsubishi Electric Corporation reserves the right to make changes to the products or information contained herein
without notice. No liability is assumed as a result of their use or application.
FEB06 (2/6)
MITSUBISHI (OPTICAL DEVICES)
FU-68SDF-x8yyMzzF
1.55
μm
DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
ELECTRICAL/OPTICAL CHARACTERISTICS
Parameter
Symbol
Optical output
Threshold current
Optical output power
at threshold current
Operating current
Operating voltage
Input impedance
Light-emission central
wavelength
Central wavelength drift with
case temp.
Laser operating temperature
Spectral width
Side mode suppression ratio
Dispersion penalty
Cutoff frequency
(-1.5dB optical)
Rise and fall time (10~90%)
Relative intensity noise
Tracking error
P
0
Ith
Pth
Iop
Vop
Zin
λc
Δλc/ΔTc
Tset
Δλ
Sr
Pp
fc
tr, tf
Nr
Er
(Tld=Tset, Tc=25°C unless otherwise noted)
Test Conditions
Limits
Min.
Typ.
Max.
CW,If=Iop
-x802MzzF
2
-x810MzzF
10
CW
-
10
25
CW, If=Ith
-x802MzzF
-
-
100
-x810MzzF
-
-
150
CW, Pf=P
0
-x802MzzF
-
40
65
-x810MzzF
-
50
95
CW, Pf=P
0
-
1.3
1.8
Pf= P
0
-
25
-
(Note 2)
See Ordering Information
and Table 1
-1
-
0
Tc=-20~70°C
-
(Note 2), -20dB
(Note 2)
(Note 2), at 10
-10
BER,
+1800ps/nm
Pf= P
0
20
-
33
-
3.5
-
0.2
40
-
-
35
0.4
-
2
-
Unit
mW
mA
μW
mA
V
Ω
nm
pm/°C
°C
nm
dB
dB
GHz
(Note 2)
-
-
150
psec
CW, Pf= P
0
, f =0.5~3GHz
-
-155
-145
dB/Hz
-
-
0.5
dB
Tc=-20~70°C, APC, ATC
(Note 3)
Differential efficiency
CW
-x802MzzF
0.057
0.07
0.15
mW/m
η
Pf= P
0
A
-x810MzzF
0.15
0.25
0.35
Linearity
CW, Pf= P
0
x0.1~ P
0
x1.2
-20
-
20
%
Δη
(Note 4)
Monitor current
Imon
CW, Pf= P
0
-x802MzzF
0.1
-
2
mA
Vrd=5V
-x810MzzF
0.2
-
3
Optical isolation
Iso
Tc=25°C
35
-
-
dB
23
-
-
Tc=-20~70°C
Dark current (PD)
Id
-
-
0.1
Vrd=5V, Tc=-20~70°C
μA
Capacitance (PD)
Ct
Vrd=5V, f=1MHz
-
-
10
pF
23
Note 2) 2.48832Gb/s NRZ, 2 -1, Pf_ave= P
0
x 0.5, Extinction ratio 10dB, optical return loss of the connectors should be
greater than 40dB in order to ensure the specified performance.
Note 3) Er=max|10×log(Pf / Pf@25°C)|
Note 4) Variation of the differential efficiency from the straight line between P
0
x0.1~ P
0
x1.2
THERMAL CHARACTERISTICS
(Tld=Tset, Tc=-20~70°C)
Parameter
Symbol
Test Conditions
Thermistor resistance
B constant of Rth
Cooling capacity
Cooler current
Cooler voltage
Rth
B
ΔT
Ipe
Vpe
Tld=25°C
-
Pf= P
0
, Tc=70°C
Pf= P
0
, Tc=70°C, Tld=Tset
Pf= P
0
, Tc=70°C, Tld=Tset
Min.
9.5
-
50
-
-
Limits
Typ.
10
3950
-
0.6
1.2
Unit
Max.
10.5
-
-
1
2
kΩ
K
°C
A
V
Mitsubishi Electric Corporation reserves the right to make changes to the products or information contained herein
without notice. No liability is assumed as a result of their use or application.
FEB06 (3/6)
MITSUBISHI (OPTICAL DEVICES)
FU-68SDF-x8yyMzzF
1.55
μm
DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
FIBER PIGTAIL SPECIFICATIONS
Parameter
Limits
Unit
Type
SM
-
Mode field diameter
9.5+/-1
μm
Cladding diameter
125+/-2
μm
Secondary coating outer diameter
0.9+/-0.1
mm
Connector
(Note 5)
-
Optical return loss of connector
40 (min)
dB
Note 5) SC/PC and FC/PC are available. Other connectors are also available for large quantities.
DOCUMENTATION
(Tld=Tset)
•
Fiber output power vs. Laser forward current at Tld=Tset and Tc=25°C
•
Threshold current (Ith)
•
Laser forward current (Iop) at Pf=P
0
•
Laser forward voltage (Vop) at Pf= P
0
•
Laser operating temperature (Tset) at
λc
(Note 6)
•
Monitor current (Imon) at Pf= P
0
•
Thermistor resistance (Rth)
•
Cooler current (Ipe) at Pf= P
0
and Tc=70°C
•
Cooler voltage (Vpe) at Pf= P
0
and Tc=70°C
Note 6) Tset is attached as a reference data. Rth should be used in order to tune the wavelength to the specified value
accurately.
Mitsubishi Electric Corporation reserves the right to make changes to the products or information contained herein
without notice. No liability is assumed as a result of their use or application.
FEB06 (4/6)
MITSUBISHI (OPTICAL DEVICES)
FU-68SDF-x8yyMzzF
1.55
μm
DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
ORDERING INFORMATION
FU - 68SDF – _ 8 _ _ M __ F
λ
code
See table 1
02
10
Peak Output Power
2mW
10mW
Connector
SC/PC
FC/PC
W
V
Table 1.
f [THz]
196.30
196.20
196.10
196.00
195.90
195.80
195.70
195.60
195.50
195.40
195.30
195.20
195.10
195.00
194.90
194.80
194.70
194.60
194.50
194.40
194.30
194.20
194.10
194.00
193.90
193.80
193.70
193.60
193.50
193.40
193.30
193.20
193.10
193.00
192.90
λc
[nm]
1527.22
1527.99
1528.77
1529.55
1530.33
1531.12
1531.90
1532.68
1533.47
1534.25
1535.04
1535.82
1536.61
1537.40
1538.19
1538.98
1539.77
1540.56
1541.35
1542.14
1542.94
1543.73
1544.53
1545.32
1546.12
1546.92
1547.72
1548.51
1549.32
1550.12
1550.92
1551.72
1552.52
1553.33
1554.13
λ
code
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
f [THz]
192.80
192.70
192.60
192.50
192.40
192.30
192.20
192.10
192.00
191.90
191.80
191.70
λc
[nm]
1554.94
1555.75
1556.55
1557.36
1558.17
1558.98
1559.79
1560.61
1561.42
1562.23
1563.05
1563.86
λ
code
73
75
77
79
81
83
85
87
89
91
93
95
All wavelengths are referred to vacuum. Tolerance is
λc+/-0.05nm.
Mitsubishi Electric Corporation reserves the right to make changes to the products or information contained herein
without notice. No liability is assumed as a result of their use or application.
FEB06 (5/6)
MITSUBISHI (OPTICAL DEVICES)
FU-68SDF-x8yyMzzF
1.55
μm
DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
OUTLINE DIAGRAM
Unless otherwise noted +/-0.5mm
(Unit : mm)
FU-68SDF-x8yyMzzF
Mitsubishi Electric Corporation reserves the right to make changes to the products or information contained herein
without notice. No liability is assumed as a result of their use or application.
