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TZ7-02-621B(2/8)

14 January,2003

MITSUBISHI (OPTICAL DEVICES)

FU-632SEA-V31Mxx/W31Mxx
FU-632SEA-V61Mxx/W61Mxx

1.55

m EAM/DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL(WDM)

DESCRIPTION

Module type FU-632SEA-V61Mxx/-V31Mxx is an

electro-aborption modulator integrated with 1.55

DFB-LD module with single mode optical fiber.

This module is suitable to a light source in 2.5Gb/s

digital optical communication systems where the
distance is shorter than 640km.

This module is prepared in accordance with ITU-T

recommendation wavelength channel plan for
Dense-WDM transmission.

FEATURES

- Input impedance is 50

- Integrated Electroabsorption Modulator(EAM)
- Distributed feedback (DFB) Laser Diode
- Emission wavelength is the 1.55mm band
- Single-mode optical fiber pig-tail
- Built-in optical isolator
- Built-in thermal electric cooler
- Butterfly package

APPLICATION

2.5Gbps,6400ps/nm WDM application
2.5Gbps,12800ps/nm WDM application

ABSOLUTE MAXIMUM RATINGS

(Tld=Tset)

Parameter

Symbol

Conditions

Rating

Unit

Optical output power

Forward current

200

Laser diode

Reverse voltage

Vrl

Reverse voltage

Vrm

Modulator

Forward voltage

Vfm

Reverse voltage

Vrd

Photodiode for

monitoring

Forward current

Ifd

Current

Ipe

1.5

Thermoelectric

cooler(Note 1)

Voltage

Vpe

Operating case temperature

-20 to 70

Storage temperature

Tstg

-40 to 85

Note 1. Even if the thermoelectric cooler(TEC) is operated within the rated conditions, uncontrolled current

loading or operation without heat sink 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.

TZ7-02-621B(3/8)

14 January,2003

MITSUBISHI (OPTICAL DEVICES)

FU-632SEA-V31Mxx/W31Mxx
FU-632SEA-V61Mxx/W61Mxx

1.55

m EAM/DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL(WDM)

ELECTRICAL/OPTICAL CHARACTERISTICS

(Tld=Tset, Tc=-20~70

C unless otherwise noted)

Parameter

Symbol

Test Conditions

Limits

Unit

(Note 2)

Min.

Typ.

Max.

Laser operating
Temperature

Tset

CW, If=Iop

Threshold current

Ith

CW,Vm=0V

Operating current

Iop

CW,Vm=0V

Operating voltage

Vop

CW,Vm=0V,If=Iop

1.7

Input impedance

Zin

If=Iop

Optical output power
from fiber end

Pf_ave

(Note3,4)

-2

+2.5

dBm

Light emission central
spectral wavelength

CW,Vm=0V,If=Iop,
Tld=Tset

see Table 1.

Center wavelength drift with
case temperature

CW,Vm=0V,APC
Tld=Tset ,Tc=-20~70

-1

pm/

Side mode suppression
ratio

(Note3,4)

CW,Vm=0V,If=Iop

MHz

Spectral width

mod

(Note3,4)

0.05

0.1

Relative intensity noise

RIN

CW,Vm=0V,If=Iop,2.5GHz

-155

-140

dB/Hz

-V31Mxx
@6400ps/nm

1.5

Power penalty

(Note3,4)

-V61Mxx
@12800ps/nm

1.5

Extinction ratio

(Note3,4)

Rise/Fall time

tr/tf

(Note3,4),20-80%

100

Cutoff frequency

If=Iop,Vm=-1V

3.5

GHz

If=Iop,Vm=-1V,0~2GHz

RF return loss

S11

If=Iop,Vm=-1V,2~3GHz

Tracking error

Tc=-20~70

C,APC,

ATC (Note 5),Vm=0V

0.3

0.5

Monitor current

Imon

(Note3,4)

0.1

1.5

Dark current(PD)

Vrd=5V,Tld=25

0.1

Capacitance(PD)

Vrd=5V,Tld=25

C,f = 1MHz

Tc=25

Optical isolation

Iso

Tc=-20~70

Note 2. Vm is EAM bias level at CW condition, Vpp and Voff are EAM amplitude and EAM high level offset
voltage respectively at modulated condition.
3. 2.48832Gb/s,NRZ,PRBS2

-1,If=Iop,Vpp=2.5V,Voff= -0.2V,Tld=Tset, Back to back.

4. Optical return loss of the connectors should be greater than 40dB in order to get specified performance.
5. Er=MAX|10

log(Pf(Tc)/Pf(25

C))|

TZ7-02-621B(4/8)

14 January,2003

MITSUBISHI (OPTICAL DEVICES)

FU-632SEA-V31Mxx/W31Mxx
FU-632SEA-V61Mxx/W61Mxx

1.55

m EAM/DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL(WDM)

THERMAL CHARACTERISTICS

(Tld=Tset, Tc=-20~70

Parameter

Symbol

Test Conditions

Limits

Unit

Min.

Typ.

Max.

Thermistor resistance

Rth

Tld=25

9.5

10.5

B constant of Rth

3950

Cooler current

Ipe

If=Iop,Tld=Tset,Tc=70

0.7

1.2

Cooler voltage

Vpe

If=Iop,Tld=Tset,Tc=70

1.7

2.5

FIBER PIGTAIL SPECIFICATIONS

Parameter

Limits

Unit

Type

Mode field diameter

9.3

Cladding diameter

125

Secondary coating outer diameter

0.9

0.1

Connector type

FC/PC or SC/PC*

Optical return loss of connector

40 (min)

*FC/PC connector is for FU-632SEA-V31Mxx and -V61Mxx series.
SC/PC connector is for FU-632SEA-W31Mxx and -W61Mxx series.

fig1. Definition of Electrical input

Voff

Vpp

time

input
voltage

TZ7-02-621B(5/8)

14 January,2003

MITSUBISHI (OPTICAL DEVICES)

FU-632SEA-V31Mxx/W31Mxx
FU-632SEA-V61Mxx/W61Mxx

1.55

m EAM/DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL(WDM)

DOCUMENTATION

(Tld=Tset)

- Fiber output power vs. Laser forward current at Vm=0V, Tld=Tset

- Fiber output power (Pf_ave) at If=Iop,2.48832Gb/s modulation,Tld=Tset and Tc=25

- Threshold current (Ith) at Tld=Tset and Tc=25

- Laser forward current (Iop) at Pf_ave > -1dBm, Vm=0V, Tld=Tset and Tc=25

- Laser forward voltage (Vop) at If = Iop, Vm=0V, Tld=Tset and Tc=25

- Laser operating temperature (Tset) at

c. (Note 7)

- Monitor current (Imon) at If = Iop, Vm=0V, Tld=Tset and Tc=25

- Thermistor resistance (Rth) at

c. (Note 7).

- Cooler current (Ipe) at If = Iop, Vm=0V, Tld=Tset and Tc=70

- Cooler voltage (Vpe) at If = Iop, Vm=0V, Tld=Tset and Tc=70

- Power penalty at If=Iop,2.48832Gb/s modulation, Tld=Tset and Tc=25

Note: 7. Tset is attached as a reference data. Rth should be used in order to tune the wavelength to the

specified value accurately.

ORDERING INFORMATION

FU-632SEA- V 6 1 M 13

Wavelength Code : (See Table 1)

Transmission Distance
3: 6400ps/nm , 6: 12800ps/nm

Fiber Connector Type
V: FC/PC , W: SC/PC
No indication : no connector

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: FU-632SEA-V31M27

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: FU-632SEA-V31M27