Mitsubishi Electric Corporation Semiconductor Group FU-68PDF-520M89B, FU-68PDF-520M88B, FU-68PDF-520M87B, FU-68PDF-520M86B, FU-68PDF-520M84B Datasheet

FU-68PDF-V520MxxB

1.55 mm DFB-LD MODULE WITH POLARIZATION MAINTAINING FIBER PIGTAIL

(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)

DESCRIPTION

Module t ype FU-68PDF-V520MxxB is a 1.55mm DF B ­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 in accordance with ITU-T
recommendation wavelength channel plan for D ense­WDM transmission.

FEATURES

Multi quantum wells (MQW) DFB Laser Diode
module

Input impedance is 25W
Emission wavelength is in 1.55mm band

Polarization maintaining optical fiber pig-tail
Built-in optical isolator
Built-in thermal electric cooler
Butterfly package
With photodiode for optical output monitor

MITSUBISHI (OPTICAL DEVICES)

APPLICATION

High speed transmission systems (~10Gb/s)
Dense-WDM systems

ABSOLUTE MAXIMUM RATINGS (Tld=Tset)

Parameter Symbol Conditions Rating Unit

Laser diode

electric cooler
(Note)

Operating case temperature Tc -20 ~ 70
Storage temperature Tstg -40 ~ 85

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.

Optical output
power

Forward current If CW 150 mA
Reverse voltage Vrl
Reverse voltage Vrd 20 VPhotodiode
Forward current Ifd
Cooler current Ipe 1.3 AThermo­Cooler voltage Vpe

Pf CW 24 mW

2V

2mA

3.1 V

°C
°C

MITSUBISHI (OPTICAL DEVICES)

FU-68PDF-V520MxxB

1.55 mm 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 -

Light-emission central
wavelength

Central wavelength drift with
case temp.

Laser operating temperature Tset - 15 - 35 °C
Spectral line width

Side mode suppression ratio Sr CW, Pf=20mW 33 40 - dB
Cutoff frequency

(-1.5dB optical)
Polarization extinction ratio Ex CW, Pf=20mW 20 25 - dB
Relative intensity noise Nr CW, Pf=20mW,

Tracking error
(Note 2)

Differential efficiency

Monitor current Imon CW, Pf=20mW, Vrd=5V 0.2 - 4 mA

Dark current (PD) Id
Capacitance (PD) Ct Vrd=5V, f=1MHz - - 10 pF

Note 1) See Table 1.
Note 2) Er=max|10´log(Pf / Pf@25°C)|

lc

Dlc/DTc Tc=-20~70°C

Df

fc Pf=20mW 2 - - GHz

Er

h

CW, Pf=20mW (Note 1) nm

-1 - 0

CW, Pf=20mW - - 20 MHz

- -155 -145 dB/Hz

0.5~3GHz
Tc=-20~70°C,

APC, ATC
CW, Pf=20mW 0.15 - - mW/

Tc=25°C35--Optical isolation Iso
Tc=-20~70°C

Vrd=5V, Tc=-20~70°C

- - 0.5 dB

23 - -

- - 0.1

pm/°C

W

mA

dB

mA

MITSUBISHI (OPTICAL DEVICES)

FU-68PDF-V520MxxB

1.55 mm DFB-LD MODULE WITH POLARIZATION MAINTAINING FIBER PIGTAIL

(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)

THERMAL CHARACTERISTICS (Tld=Tset, Tc=-20~70°C)

Parameter Symbol Test Conditions Limits Unit

Min. Typ. Max.

Thermistor resistance Rth Tld=25 9.5 10 10.5
B constant of Rth B - - 3950 - K

Cooling capacity
Cooler current Ipe

Cooler voltage Vpe

FIBER PIGTAIL SPECIFICATIONS

Parameter Limits Unit
Type PM (Note 3) ­Mode field diameter 11 1

Cladding diameter 125 3
Secondary coating outer diameter 0.9 0.1 mm

Polarization axis slow axis ­Connector FC/PC ­Optical return loss of connector 40 (min) dB

Note 3) PMF - Sumitomo Panda fiber (PM-155)

DT Pf=20mW, Tc=70°C

Pf=20mW, Tc=65°C,
Tld=Tset

Pf=20mW, Tc=70°C,
Tld=Tset

Pf=20mW, Tc=65°C,
Tld=Tset

Pf=20mW, Tc=70°C,
Tld=Tset

55 - -

- 0.7 1 A

- 0.9 1.2 A

- 1.4 2.3 V

- 2 2.6 V

mm
mm

kW

°C

DOCUMENTATION (Tld=Tset)

Fiber output power vs. Laser forward current at Tld=Tset and Tc=-20,25,70°C
Threshold current (Ith)

Laser forward current (Iop) at Pf=20mW
Laser forward voltage (Vop) at Pf=20mW
Laser operating temperature (Tset) at lc (Note 4)

Monitor current (Imon) at Pf=20mW
Thermistor resistance (Rth)
Cooler current (Ipe) at Pf=20mW and Tc=70°C
Cooler voltage (Vpe) at Pf=20mW and Tc=70°C

Note 4) Tset is attached as a reference data. Rth should be used in order to tune the wavelength to the specified

value accurately.

MITSUBISHI (OPTICAL DEVICES)

FU-68PDF-V520MxxB

1.55 mm DFB-LD MODULE WITH POLARIZATION MAINTAINING FIBER PIGTAIL

(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)

Table 1.

Type number

FU-68PDF-520M9B 1529.55 FU-68PDF-520M39B 1541.35 FU-68PDF-520M69B 1553.33
FU-68PDF-520M10B 1529.94 FU-68PDF-520M40B 1541.75 FU-68PDF-520M70B 1553.73
FU-68PDF-520M11B 1530.33 FU-68PDF-520M41B 1542.14 FU-68PDF-520M71B 1554.13
FU-68PDF-520M12B 1530.72 FU-68PDF-520M42B 1542.54 FU-68PDF-520M72B 1554.54
FU-68PDF-520M13B 1531.12 FU-68PDF-520M43B 1542.94 FU-68PDF-520M73B 1554.94
FU-68PDF-520M14B 1531.51 FU-68PDF-520M44B 1543.33 FU-68PDF-520M74B 1555.34
FU-68PDF-520M15B 1531.90 FU-68PDF-520M45B 1543.73 FU-68PDF-520M75B 1555.75
FU-68PDF-520M16B 1532.29 FU-68PDF-520M46B 1544.13 FU-68PDF-520M76B 1556.15
FU-68PDF-520M17B 1532.68 FU-68PDF-520M47B 1544.53 FU-68PDF-520M77B 1556.55
FU-68PDF-520M18B 1533.07 FU-68PDF-520M48B 1544.92 FU-68PDF-520M78B 1556.96
FU-68PDF-520M19B 1533.47 FU-68PDF-520M49B 1545.32 FU-68PDF-520M79B 1557.36
FU-68PDF-520M20B 1533.86 FU-68PDF-520M50B 1545.72 FU-68PDF-520M80B 1557.77
FU-68PDF-520M21B 1534.25 FU-68PDF-520M51B 1546.12 FU-68PDF-520M81B 1558.17
FU-68PDF-520M22B 1534.64 FU-68PDF-520M52B 1546.52 FU-68PDF-520M82B 1558.58
FU-68PDF-520M23B 1535.04 FU-68PDF-520M53B 1546.92 FU-68PDF-520M83B 1558.98
FU-68PDF-520M24B 1535.43 FU-68PDF-520M54B 1547.32 FU-68PDF-520M84B 1559.39
FU-68PDF-520M25B 1535.82 FU-68PDF-520M55B 1547.72 FU-68PDF-520M85B 1559.79
FU-68PDF-520M26B 1536.22 FU-68PDF-520M56B 1548.11 FU-68PDF-520M86B 1560.20
FU-68PDF-520M27B 1536.61 FU-68PDF-520M57B 1548.51 FU-68PDF-520M87B 1560.61
FU-68PDF-520M28B 1537.00 FU-68PDF-520M58B 1548.91 FU-68PDF-520M88B 1561.01
FU-68PDF-520M29B 1537.40 FU-68PDF-520M59B 1549.32 FU-68PDF-520M89B 1561.42
FU-68PDF-520M30B 1537.79 FU-68PDF-520M60B 1549.72 FU-68PDF-520M90B 1561.83
FU-68PDF-520M31B 1538.19 FU-68PDF-520M61B 1550.12 FU-68PDF-520M91B 1562.23
FU-68PDF-520M32B 1538.58 FU-68PDF-520M62B 1550.52 FU-68PDF-520M92B 1562.64
FU-68PDF-520M33B 1538.98 FU-68PDF-520M63B 1550.92 FU-68PDF-520M93B 1563.05
FU-68PDF-520M34B 1539.37 FU-68PDF-520M64B 1551.32 FU-68PDF-520M94B 1563.45
FU-68PDF-520M35B 1539.77 FU-68PDF-520M65B 1551.72 FU-68PDF-520M95B 1563.86
FU-68PDF-520M36B 1540.16 FU-68PDF-520M66B 1552.12 FU-68PDF-520M96B 1564.27
FU-68PDF-520M37B 1540.56 FU-68PDF-520M67B 1552.52 FU-68PDF-520M97B 1564.68
FU-68PDF-520M38B 1540.95 FU-68PDF-520M68B 1552.93

All wavelengths are referred to vacuum.
Tolerance is lc

0.05nm.

lc (nm)

Type number

lc (nm)

Type number

lc (nm)

(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)

OUTLINE DIAGRAM

MITSUBISHI (OPTICAL DEVICES)

FU-68PDF-V520MxxB

1.55 mm DFB-LD MODULE WITH POLARIZATION MAINTAINING FIBER PIGTAIL

(Unit : mm)

28.4

FU-68PDF-V520MxxB