Mitsubishi Electric Corporation Semiconductor Group FU-68PDF-V520M189B, FU-68PDF-V520M188B, FU-68PDF-V520M187B, FU-68PDF-V520M186B, FU-68PDF-V520M185B Datasheet
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MITSUBISHI (OPTICAL DEVICES)
FU-68PDF-V520MxxxB
1.58 µm (L-Band) DFB-LD MODULE WITH POLARIZATION MAINTAINING FIBER PIGTAIL
(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
DESCRIPTION
Module type FU-68PDF-V520MxxB is a 1.58µm
(L-Band) DFB-LD module with polarization
maintaining optical fiber.
This module is suitable to a CW light source for
external modulator for use in 2.5Gb/s and 10Gb/s
digital optical communication systems.
This module is prepared to expand the wavelength
channels into L-Band for Dense-WDM transmission.
FEATURES
l Multi quantum wells (MQW) DFB Laser Diode
module (100GHz spacing)
l Input impedance is 25Ω
l Emission wavelength is in 1.58µm band
l Polarization maintaining optical fiber pig-tail
l Built-in optical isolator
l Built-in thermal electric cooler
l Butterfly package
l With photodiode for optical output monitor
APPLICATION
High speed transmission systems (~10Gb/s)
Dense-WDM systems
OPTION
l Wavelength option:
1565nm~1625nm are available
ABSOLUTE MAXIMUM RATINGS (Tld=Tset)
Parameter Symbol Conditions Rating Unit
Optical output
power
Pf CW 24 mW
Forward current If CW 150 mA
Laser diode
Reverse voltage Vrl - 2 V
Reverse voltage Vrd - 20 VPhotodiode
Forward current Ifd - 2 mA
Cooler current Ipe - 1.3 AThermoelectric cooler
(Note)
Cooler voltage Vpe - 3.1 V
Operating case temperature Tc - -20 ~ 70
°C
Storage temperature Tstg - -40 ~ 85
°C
Note) 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 (OPTICAL DEVICES)
FU-68PDF-V520MxxxB
1.58 µm (L-Band) DFB-LD MODULE WITH POLARIZATION MAINTAINING FIBER PIGTAIL
(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
ELECTRICAL/OPTICAL CHARACTERISTICS (Tld=Tset, Tc=25°C unless otherwise noted)
Parameter Symbol Test Conditions Limits Unit
Min. Typ. Max.
Threshold current Ith CW - 10 25 mA
Operating current Iop CW, Pf=20mW - - 130 mA
Operating voltage Vop CW, Pf=20mW - - 2 V
Input impedance Zin Pf=20mW - 25 - W
Light-emission central
wavelength
λc
CW, Pf=20mW (Note 1) nm
Central wavelength drift with
case temp.
∆λc/∆Tc Tc=-20~70°C
-1 - 0
pm/°C
Laser operating temperature Tset - 15 - 35 °C
Spectral line width
∆f
CW, Pf=20mW - - 20 MHz
Side mode suppression ratio Sr CW, Pf=20mW 33 40 - dB
Cutoff frequency
(-1.5dB optical)
fc Pf=20mW 2 - - GHz
Polarization extinction ratio Ex CW, Pf=20mW 20 25 - dB
Relative intensity noise Nr CW, Pf=20mW,
0.5~3GHz
- -155 -145 dB/Hz
Tracking error
(Note 2)
Er
Tc=-20~70°C,
APC, ATC
- - 0.5 dB
Differential efficiency
η
CW, Pf=20mW 0.15 - - mW/
mA
Monitor current Imon CW, Pf=20mW, Vrd=5V 0.2 - 4 mA
Tc=25°C 35 - -Optical isolation Iso
Tc=-20~70°C
23 - -
dB
Dark current (PD) Id
Vrd=5V, Tc=-20~70°C
- - 0.1
µA
Capacitance (PD) Ct Vrd=5V, f=1MHz - - 10 pF
Note 1) See Table 1.
Note 2) Er=max|10×log(Pf / Pf@25°C)|
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