Preliminary
TZ7-01-262B (1/6)
June 10, 2002
Approved
Approved
Charged
H.Koyanagi
Preliminary specification of Mini-DIL DFB-LD module
for 2.5Gb/s Coarse WDM
Module type: FU-645SDF-x2Mxx
( CS product: 1510, 1530, 1550, 1570nm wavelengths)
( ES product: 1470, 1490, 1590, 1610nm wavelengths)
A
B
C
D
X
Date
Approved
11,June `02
T.Nambara
MITSUBISHI ELECTRIC CORPORATION
* Mitsubishi Electric Corp. reserves the right to change product design and specification without notice.
Preliminary
TZ7-01-262B (2/6)
MITSUBISHI (OPTICAL DEVICES)
FU-645SDF-x2Mxx
(CS & ES Product)
1.55
m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
(BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
DESCRIPTION
Module type FU-645SDF-x2Mxx is a 1.55
m
Uncooled DFB-LD module with single-mode optical
fiber.
This module is suitable to a light source for use in
2.5Gb/s coarse WDM digital optical communication
systems.
FEATURES
l
/4 shifted Multi quantum wells (MQW) DFB
Laser Diode module
l
Input impedance is 25
l
Emission wavelength is in 1.55
m band
l
High-speed response
l
Built-in optical isolator
l
Built-in thermistor and bias T
l
8-pin Mini-DIL package with Gull wing leads
l
With photodiode for optical output monitor
APPLICATION
High speed transmission systems (~2.5Gb/s)
Coarse WDM (CWDM)
ABSOLUTE MAXIMUM RATINGS (Tc=25C)
Parameter
Symbol
Conditions
Rating
Unit
Optical output
power
Pf
CW
6
mW
Forward current
If
CW
150
mA
Laser diode
Reverse voltage
Vrl
-
2
V
Reverse voltage
Vrd
-
20
V
Photodiode
Forward current
Ifd
-
2
mA
Operating case temperature
Tc
-
-5 ~ +70
C
Storage temperature
Tstg
-
-40 ~ +85
C
Preliminary
TZ7-01-262B (3/6)
MITSUBISHI (OPTICAL DEVICES)
FU-645SDF-x2Mxx
(CS & ES Product)
1.55
m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
(BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
ELECTRICAL/OPTICAL CHARACTERISTICS (Tc=-5~70C, unless otherwise noted)
Limits
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
CW, Tc=25C
-
12
25
Threshold current
Ith
CW
4
-
40
mA
Optical output power
at threshold current
Pth
CW, Ibias=Ith
-
-
50
W
CW, Pf=2mW, Tc=25C
-
42
70
Operating current
Iop
CW, Pf=2mW, Tc=70C
-
65
90
mA
CW, Pf=2mW, Tc=25C
-
1.2
1.5
Operating voltage
Vop
CW, Pf=2mW, Tc=70C
-
1.6
1.8
V
Input impedance
Zin
-
-
25
-
Optical output power from
fiber end
Pf
CW, nominal
-
2
-
mW
-x2Mx2
1467
1470
1473
-x2Mx3
1487
1490
1493
-x2Mx4
1507
1510
1513
-x2Mx5
1527
1530
1533
-x2Mx6
1547
1550
1553
-x2Mx7
1567
1570
1573
-x2Mx8
1587
1590
1593
Light-emission central
wavelength
c
CW,
(Note2)
Pf=1mW, (Note2)
Tc=25C
(Note1)
(Note2)
(Note2)
-x2Mx9
1607
1610
1613
nm
Wavelength temperature
coefficient
ct
-
-
0.10
0.11
nm/C
Spectral width
(Note3), -20dB
-
-
0.4
nm
Side mode suppression ratio
Sr
(Note3)
30
45
-
dB
Cutoff frequency
(-1.5dB optical)
fc
Pf=1mW
3.5
-
-
GHz
Rise and fall time (10~90%)
tr, tf
(Note3)
-
125
150
psec
Dispersion penalty
Pp
(Note3),
+1800ps/nm disp. @1550nm
-
-
2
(Note4)
dB
Relative intensity noise
Nr
CW, Pf=1mW, f=1GHz
-
-150
-140
dB/Hz
Tracking error (Note5)
Er
CW, APC(Imon=const.)
-
0.5
1.25
dB
CW, Tc=25C
0.06
-
0.1
Differential efficiency
CW
0.03
-
0.15
mW/
mA
Monitor current
Imon
CW, Pf=1mW, Vrd=5V
0.05
-
1
mA
Optical isolation
Iso
-
20
-
-
dB
Dark current (PD)
Id
Vrd=5V
-
-
0.1
A
Capacitance (PD)
Ct
Vrd=5V, f=1MHz
-
-
10
pF
Thermistor resistance
Rth
Tc=25C
9.5
10
10.5
k
B constant of Rth
B
-
-
3950
-
K
Note1) "x"s in type number are decided with types of optical connector and lead form. Please refer TYPE
NUMBER INFORMATION in the next page.
Note2) -x2Mx2, -x2Mx3, -x2Mx8 and -x2Mx9 will be provided as "ES" from November 2002.
Note3) 2.48832Gb/s NRZ, 2
23
-1, Pf_ave=1mW, Extinction ratio 10dB, optical return loss from the line should be
greater than 24dB in order to ensure the specified performance.
Note4) This value is Mitsubishi's target for ES.
Note5) Er=max|10
log(Pf / Pf@25C)|
Preliminary
TZ7-01-262B (4/6)
MITSUBISHI (OPTICAL DEVICES)
FU-645SDF-x2Mxx
(CS & ES Product)
1.55
m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
(BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
FIBER PIGTAIL SPECIFICATIONS
Parameter
Limits
Unit
Type
SM
-
Mode field diameter
10
1
m
Cladding diameter
125
2
m
Secondary coating outer diameter
0.9
0.1
mm
Connector
See Table 1.
-
Optical return loss of connector
40 (min)
dB
DOCUMENTATION
Threshold current (Ith) at Tc=25, 70C
Operating current (Iop) at Tc=25, 70C
Operating voltage (Vop) at Tc=25C
Light-emission central wavelength (
c) at Tc=25C
Monitor current (Imon) at Tc=25C
Optical output power from fiber end (Pf)
TYPE NUMBER INFORMATION
FU-645SDF-x2Mxx
Wavelength: Please see ELECTRICAL/OPTICAL CHARACTERISTICS
table.
Lead Form: Please see Table 1 below.
Connector:
Please see Table 1 below.
Table 1.
Type number
Connector type
L (Note 3)
Outline diagram
FU-645SDF-V2M1x
FC/PC
28.4
FU-645SDF-W2M1x
SC/PC
34.5
(1)
FU-645SDF-V2M2x
FC/PC
28.4
FU-645SDF-W2M2x
SC/PC
34.5
(2)
Note 3) `L' is defined in OUTLINE DIAGRAMs.
Preliminary
TZ7-01-262B (5/6)
MITSUBISHI (OPTICAL DEVICES)
FU-645SDF-x2Mxx
(CS & ES Product)
1.55
m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
(BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
OUTLINE DIAGRAM (1)
(Unit : mm)
FU-645SDF-x2M1x
PIN
FUNCTION
1
THERMISTOR
2
THERMISTER
3
LD BIAS, CATHODE
4
PD CATHODE
5
PD ANODE
6
LD ANODE
7
LD RF, CATHODE
8
LD ANODE
PD
LD
19
Thermistor
4
3
2
1
8
7
6
5
Pin No.
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