TZ7-02-562B (2/6)

MITSUBISHI (OPTICAL DEVICES)

FU-698PDF-V720Mxx

WAVELENGTH MONITOR INTEGRATED 1.55

m DFB-LD MODULE

WITH POLARIZATION MAINTAINING FIBER PIGTAIL
(WAVELENGTH SELECTED, DIGITAL APPLICATION)

DESCRIPTION
Module type FU-698PDF-V720Mxx is a wavelength
monitor integrated 1.55

m 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 can be prepared in accordance with
ITU-T recommendation wavelength channel plan for
Dense-WDM transmission.

FEATURES

Multi quantum wells (MQW) DFB Laser Diode
module

Emission wavelength is in 1.55

m band

Polarization maintaining optical fiber pig-tail

Built-in optical isolator

Built-in thermal electric cooler

Butterfly package

With 2 photodiodes for wavelength monitor and
optical output power monitor

8 channels for 50GHz spacing thermally

wavelength tunable

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

ABSOLUTE MAXIMUM RATINGS (Tld=Tset)

Parameter

Symbol

Conditions

Rating

Unit

Optical output
power

Forward current

150

Laser diode

Reverse voltage

Vrl

Reverse voltage

Vrd

Photodiode

Forward current

Ifd

Cooler current

Ipe

2.2

Thermo-
electric cooler
(Note)

Cooler voltage

Vpe

Operating case temperature

-5 ~ 80

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.

PRELIMINARY

TZ7-02-562B (3/6)

MITSUBISHI (OPTICAL DEVICES)

FU-698PDF-V720Mxx

WAVELENGTH MONITOR INTEGRATED 1.55

m DFB-LD MODULE

WITH POLARIZATION MAINTAINING FIBER PIGTAIL
(WAVELENGTH SELECTED, DIGITAL APPLICATION)

ELECTRICAL/OPTICAL CHARACTERISTICS
(Tld=Tset1 to 8, Tc=25

C unless otherwise noted)

Parameter

Symbol

Test Conditions

Limits

Unit

Min.

Typ.

Max.

Threshold current

Ith

Operating current

Iop

CW, Pf=20mW

130

Operating voltage

Vop

CW, Pf=20mW

Input impedance

Zin

Pf=20mW

Light-emission central
wavelength

c1 to 8

CW, Pf=20mW,
Tld=Tset1 to 8

(Note 1)

Wavelength drift after 15
years

CW, Pf=20mW,
APC, ATC, AFC (Note 2)

-20

Laser operating temperature

Tset1 to 8 -

°C

Spectral line width

CW, Pf=20mW

MHz

Side mode suppression ratio

CW, Pf=20mW

Cut-off frequency
(-1.5dB optical)

Pf=20mW

0.5

GHz

Polarization extinction ratio

CW, Pf=20mW

Relative intensity noise

CW, Pf=20mW,
0.5~3GHz

-155

-145

dB/Hz

Tracking error (Note 3)

Tc=-5~80

APC, ATC

0.5

Differential efficiency

CW, Pf=20mW

0.15

mW/

Power monitor current

Ipm

CW, Pf=20mW, Vrd=5V

200

Wavelength monitor current

Iwm

CW, Pf=20mW, Vrd=5V

200

Wavelength discriminator
slope (Note 4)

CW, Pf=20mW, Vrd=5V

GHz

Free spectrum range (Note 4)

FSR

GHz

Tc=25°C

Optical isolation

Iso

Tc=-5~80

Dark current (PD)

Vrd=5V, Tc=-5~80

Capacitance (PD)

Vrd=5V, f=1MHz

Note 1) See Table 1 to 4.
Note 2) Includes case temperature variation and aging.
Note 3) Er=max|10

log(Pf / Pf@25°C)|

Note 4) See Figure 1.

R=Iwm/Ipm

Wavelength

FSR

R@100%

@75%

@25%

R@0%

c n

(

)

100

(in nm) =>f

(in THz or GHz)

(in nm) =>f

(in THz or GHz

)

Figure 1. Wavelength discriminator curve

PRELIMINARY

TZ7-02-562B (4/6)

MITSUBISHI (OPTICAL DEVICES)

FU-698PDF-V720Mxx

WAVELENGTH MONITOR INTEGRATED 1.55

m DFB-LD MODULE

WITH POLARIZATION MAINTAINING FIBER PIGTAIL
(WAVELENGTH SELECTED, DIGITAL APPLICATION)

THERMAL CHARACTERISTICS (Tc=-5~80°C)

Parameter

Symbol

Test Conditions

Limits

Unit

Min.

Typ.

Max.

Thermistor resistance

Rth

Tld=25

9.5

10.5

B constant of Rth

3950

Cooling capacity

Pf=20mW, Tc=80

Cooler current

Ipe

Pf=20mW, Tc=80

Tld=Tset1

1.2

Cooler voltage

Vpe

Pf=20mW, Tc=80

Tld=Tset1

3.3

FIBER PIGTAIL SPECIFICATIONS

Parameter

Limits

Unit

Type

PM (Note 5)

Mode field diameter

10.5

Cladding diameter

125

Secondary coating outer diameter

0.9

0.1

Polarization axis

slow axis

Connector

FC/PC

Optical return loss of connector

40 (min)

Note 5) PMF - Sumitomo Panda fiber (PM-155)

DOCUMENTATION

Fiber output power vs. Laser forward current at Tld=Tset1 and Tc=-5,25,80

Threshold current (Ith) at Tld=Tset1 and Tc=25

Laser forward current (Iop) at Pf=20mW, Tld=Tset1 to 8 and Tc=25

Laser forward voltage (Vop) at Pf=20mW, Tld=Tset1 to 8 and Tc=25

Laser operating temperature (Tset1 to 8) at

c (Note 6)

Power monitor current (Ipm1 to 8) at Pf=20mW, Tld=Tset1 to 8 and Tc=25

Wavelength monitor current (Iwm1 to 8) at Pf=20mW,

c, Tld=Tset1 to 8 and Tc=25

Thermistor resistance (Rth1 to 8) at Tld=Tset1 to 8 and Tc=25

Cooler current (Ipe) at Pf=20mW, Tld=Tset1 and Tc=80°C

Cooler voltage (Vpe) at Pf=20mW, Tld=Tset1 and Tc=80°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.

PRELIMINARY

TZ7-02-562B (5/6)

MITSUBISHI (OPTICAL DEVICES)

FU-698PDF-V720Mxx

WAVELENGTH MONITOR INTEGRATED 1.55

m DFB-LD MODULE

WITH POLARIZATION MAINTAINING FIBER PIGTAIL
(WAVELENGTH SELECTED, DIGITAL APPLICATION)

Table 1.

(Unit: nm)

FU-698PDF-V720MZ1

for Sample

FU-698PDF-

V720M06

FU-698PDF-

V720M10

FU-698PDF-

V720M14

FU-698PDF-

V720M18

FU-698PDF-

V720M22

1528.384

1529.944

1531.507

1533.073

1534.643

1528.773

1530.334

1531.898

1533.465

1535.036

1529.163

1530.725

1532.290

1533.858

1535.429

1529.553

1531.116

1532.681

1534.250

1535.822

1529.944

1531.507

1533.073

1534.643

1536.216

1530.334

1531.898

1533.465

1535.036

1536.609

1530.725

1532.290

1533.858

1535.429

1537.003

1531.116

1532.681

1534.250

1535.822

1537.397

All wavelengths are referred to vacuum.

Table 2.

(Unit: nm)

FU-698PDF-

V720M26

FU-698PDF-

V720M30

FU-698PDF-

V720M34

FU-698PDF-

V720M38

FU-698PDF-

V720M42

FU-698PDF-

V720M46

FU-698PDF-

V720M50

1536.216

1537.792

1539.371

1540.953

1542.539

1544.128

1545.720

1536.609

1538.186

1539.766

1541.349

1542.936

1544.526

1546.119

1537.003

1538.581

1540.162

1541.746

1543.333

1544.924

1546.518

1537.397

1538.976

1540.557

1542.142

1543.730

1545.322

1546.917

1537.792

1539.371

1540.953

1542.539

1544.128

1545.720

1547.316

1538.186

1539.766

1541.349

1542.936

1544.526

1546.119

1547.715

1538.581

1540.162

1541.746

1543.333

1544.924

1546.518

1548.115

1538.976

1540.557

1542.142

1543.730

1545.322

1546.917

1548.515

All wavelengths are referred to vacuum.

Table 3.

(Unit: nm)

FU-698PDF-

V720M54

FU-698PDF-

V720M58

FU-698PDF-

V720M62

FU-698PDF-

V720M66

FU-698PDF-

V720M70

FU-698PDF-

V720M74

FU-698PDF-

V720M78

1547.316

1548.915

1550.517

1552.122

1553.731

1555.343

1556.959

1547.715

1549.315

1550.918

1552.524

1554.134

1555.747

1557.363

1548.115

1549.715

1551.319

1552.926

1554.537

1556.151

1557.768

1548.515

1550.116

1551.721

1553.329

1554.940

1556.555

1558.173

1548.915

1550.517

1552.122

1553.731

1555.343

1556.959

1558.578

1549.315

1550.918

1552.524

1554.134

1555.747

1557.363

1558.983

1549.715

1551.319

1552.926

1554.537

1556.151

1557.768

1559.389

1550.116

1551.721

1553.329

1554.940

1556.555

1558.173

1559.794

All wavelengths are referred to vacuum.

Table 4.

(Unit: nm)

FU-698PDF-

V720M82

FU-698PDF-

V720M86

FU-698PDF-

V720M90

1558.578

1560.200

1561.826

1558.983

1560.606

1562.233

1559.389

1561.013

1562.640

1559.794

1561.419

1563.047

1560.200

1561.826

1563.455

1560.606

1562.233

1563.863

1561.013

1562.640

1564.271

1561.419

1563.047

1564.679

All wavelengths are referred to vacuum.

PRELIMINARY

TZ7-02-562B (6/6)

MITSUBISHI (OPTICAL DEVICES)

FU-698PDF-V720Mxx

WAVELENGTH MONITOR INTEGRATED 1.55

m DFB-LD MODULE

WITH POLARIZATION MAINTAINING FIBER PIGTAIL
(WAVELENGTH SELECTED, DIGITAL APPLICATION)

OUTLINE DIAGRAM

(Unit : mm)

FU-698PDF-V720Mxx

PRELIMINARY

Thermistor

PIN 1

PD1

PIN 14

PIN 8

PIN 7

Thermo

Cooler

PD2

CASE

FUNCTION

THERMISTOR

LD BIAS (-)

POWER MONITOR

PD1 ANODE

COMMON PD CATHODE

COOLER ANODE

COOLER CATHODE

GND

WAVELENGTH MONITOR

PD2 ANODE

LD ANODE

LD RF

LD ANODE

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ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: FU-698PDF-V720MZ1