MITSUBISHI (OPTICAL DEVICES)
FU-445SDF-WM1
1.3
m
m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
(BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
DESCRIPTION
Mod ule type FU-445SDF-WM1 is a 1 .3
m
m Uncooled
DFB-LD module with single-mode optical fiber.
Th is module is suitable to a light source for use in
2.5Gb/s digital optical communication systems.
FEATURES
l
/4 shifted Multi quantum wells (MQW) DFB
Laser Diode module
Input impedance is 25
W
Emission wavelength is in 1.3
m
m band
High-speed response
Built-in optical isolator
Built-in thermistor and bias T
8-pin Mini-DIL package with Gull wing leads
With photodiode for optical output monitor
APPLICATION
High speed transmission systems (~2.5Gb/s)
ABSOLUTE MAXIMUM RATINGS (Tc=25
°
C)
Parameter
Symbol
Conditions
Rating
Unit
Optical output
power
Pf
CW
6
mW
Forward current
If
CW
100
mA
Laser diode
Reverse voltage
Vrl
2
V
Reverse voltage
Vrd
20
V
Photodiode
Forward current
Ifd
2
mA
Operating case temperature
Tc
-10 ~ +85
°
C
Storage temperature
Tstg
-40 ~ +85
°
C
MITSUBISHI (OPTICAL DEVICES)
FU-445SDF-WM1
1.3
m
m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
(BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
ELECTRICAL/OPTICAL CHARACTERISTICS (Tc=-10~85
°
C unless otherwise noted)
Parameter
Symbol
Test Conditions
Limits
Unit
Min.
Typ.
Max.
CW,Tc=25
°
C
-
10
25
Threshold current
Ith
CW
2
-
40
mA
Optical output power
at threshold current
Pth
CW, Ibias=Ith
-
-
50
m
W
CW, Pf=2mW,Tc=25
°
C
-
40
70
Operating current
Iop
CW, Pf=2mW,Tc=85
°
C
-
60
90
mA
Operating voltage
Vop
CW, Pf=2mW
-
1.2
1.5
V
Input impedance
Zin
-
-
25
-
W
Optical output power from
fiber end
Pf
CW,nominal
-
2
-
mW
Light-emission central
wavelength
l
c
CW, Pf=1mW
1290
1310
1330
nm
Wavelength temperature
coefficient
l
ct
-
-
0.09
0.1
nm/
°
C
Spectral width
Dl
(Note 1), -20dB
-
-
0.8
nm
Side mode suppression ratio
Sr
(Note 1)
30
45
-
dB
Cutoff frequency
(-1.5dB optical)
fc
Pf=1mW
3.5
-
-
GHz
Rise and fall time
(10~90%)
tr, tf
(Note 1)
-
125
150
psec
Dispersion penalty
Pp
(Note 1), -300ps/nm disp.
-
-
0.5
dB
Relative intensity noise
Nr
CW, Pf=1mW, f=1GHz
-
-150
-140
dB/Hz
Tracking error
(Note 2)
Er
CW,APC(Imon=Const.)
-
0.5
1.25
dB
CW, Tc=25
°
C
0.06
-
0.2
Differential efficiency
h
CW
0.04
-
0.27
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
m
A
Capacitance (PD)
Ct
Vrd=5V, f=1MHz
-
-
10
pF
Thermistor resistance
Rth
Tc=25
°
C
9.5
10
10.5
k
W
B constant of Rth
B
-
-
3950
-
K
Note 1) 2.48832Gb/s NRZ, 2
23
-1, Pf_ave=1mW, Ibias=Ith, optical return loss of the connectors should be greater
than 40dB in order to ensure the specified performance.
Note 2) Er=max|10
´
log(Pf / Pf@25
°
C)|
FIBER PIGTAIL SPECIFICATIONS
Parameter
Limits
Unit
Type
SM
-
Mode field diameter
9.5
1
m
m
Cladding diameter
125
2
m
m
Secondary coating outer diameter
0.9
0.1
mm
Connector
SC/PC
-
Optical return loss of connector
40 (min)
dB
MITSUBISHI (OPTICAL DEVICES)
FU-445SDF-WM1
1.3
m
m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL
(BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
OUTLINE DIAGRAM
(Unit : mm)
FU-445SDF-WM1
34.5
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