MITSUBISHI (OPTICAL DEVICES)

FU-68SDF-V802MxxB

1.55

m DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL

(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)

DESCRIPTION

Mod ule type FU-68SDF-V802MxxB is a 1.55

m DFB-

LD module with single-mode optical fiber.
Th is module is suitable to a directly modulated light
source for use in 2.5Gb/s digital optical
communication systems.
Th is module is pre pared in accordance with ITU-T
reco mmend ation wavelength channel plan for Dense-
WDM transmission.

FEATURES

Multi qu antum wells (MQW) DFB Laser Diode
module
Input impedance is 25

Emission wavelength is in 1.55

m band

High-speed response
Built-in optical isolator
Built-in thermal electric cooler
Butterfly package
With photodiode for optical output monitor

APPLICATION
High speed transmission systems (~2.5Gb/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

1.3

Thermo-
electric co oler
(Note)

Cooler voltage

Vpe

3.1

Operating case temperature

-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.

MITSUBISHI (OPTICAL DEVICES)

FU-68SDF-V802MxxB

1.55

m DFB-LD MODULE WITH SINGLEMODE 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

Optical output power
at threshold current

Pth

CW, If=Ith

100

Operating current

Iop

CW, Pf=2mW

Operating voltage

Vop

CW, Pf=2mW

1.3

1.8

Input impedance

Zin

Pf=2mW

Light-emission central
wavelength

(Note 1)

(Note 2)

Central wavelength drift with
case temp.

Tc=-20~70

-1

pm/

Laser operating temperature

Tset

Spectral width

(Note 1), -20dB

0.2

0.4

Side mode suppression ratio

(Note 1)

Dispersion penalty

(Note 1), at 10

-10

BER,

+1800ps/nm

Cutoff frequency
(-1.5dB optical)

Pf=2mW

3.5

GHz

Rise and fall time
(10~90%)

tr, tf

(Note 1)

150

psec

Relative intensity noise

CW, Pf=2mW,
0.5~3GHz

-155

-145

dB/Hz

Tracking error
(Note 3)

Tc=-20~70

APC, ATC

0.5

Differential efficiency

CW, Pf=2mW

0.057

0.07

0.15

mW/

Linearity

CW, Pf=0.2~2.4mW,
(Note 4)

-20

Monitor current

Imon

CW, Pf=2mW, Vrd=5V

0.1

Tc=25

Optical isolation

Iso

Tc=-20~70

Dark current (PD)

Vrd=5V, Tc=-20~70

0.1

Capacitance (PD)

Vrd=5V, f=1MHz

Note 1) 2.48832Gb/s NRZ, 2

-1, Pf_ave=1mW, Extinction ratio 10dB, optical return loss of the connectors should

be greater than 40dB in order to ensure the specified performance.

Note 2) See Table 1.
Note 3) Er=max|10

log(Pf / Pf@25

C)|

Note 4) Variation of the differential efficiency from the straight line between 0.2mW and 2mW.

MITSUBISHI (OPTICAL DEVICES)

FU-68SDF-V802MxxB

1.55

m DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL

(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)

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

Cooling capacity

Pf=2mW, Tc=70

Cooler current

Ipe

Pf=2mW, Tc=70

C, Tld=Tset

0.6

Cooler voltage

Vpe

Pf=2mW, Tc=70

C, Tld=Tset

1.2

FIBER PIGTAIL SPECIFICATIONS

Parameter

Limits

Unit

Type

Mode field diameter

9.5

Cladding diameter

125

Secondary coating outer diameter

0.9

0.1

Connector

FC/PC

Optical return loss of connector

40 (min)

DOCUMENTATION (Tld=Tset)

Fiber output power vs. Laser forward current at Tld=Tset and Tc=-20,25,70

BER curves at 2.48832Gb/s modulation

Threshold current (Ith)

Laser forward current (Iop) at Pf=2mW

Laser forward voltage (Vop) at Pf=2mW

Laser operating temperature (Tset) at

c (Note 5)

Monitor current (Imon) at Pf=2mW

Thermistor resistance (Rth)

Cooler current (Ipe) at Pf=2mW and Tc=70

Cooler voltage (Vpe) at Pf=2mW and Tc=70

Note 5) 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-68SDF-V802MxxB

1.55

m DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL

(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)

Table 1.

Type number

c (nm)

Type number

c (nm)

FU-68SDF-802M9B

1529.55

FU-68SDF-802M53B

1546.92

FU-68SDF-802M11B

1530.33

FU-68SDF-802M55B

1547.72

FU-68SDF-802M13B

1531.12

FU-68SDF-802M57B

1548.51

FU-68SDF-802M15B

1531.90

FU-68SDF-802M59B

1549.32

FU-68SDF-802M17B

1532.68

FU-68SDF-802M61B

1550.12

FU-68SDF-802M19B

1533.47

FU-68SDF-802M63B

1550.92

FU-68SDF-802M21B

1534.25

FU-68SDF-802M65B

1551.72

FU-68SDF-802M23B

1535.04

FU-68SDF-802M67B

1552.52

FU-68SDF-802M25B

1535.82

FU-68SDF-802M69B

1553.33

FU-68SDF-802M27B

1536.61

FU-68SDF-802M71B

1554.13

FU-68SDF-802M29B

1537.40

FU-68SDF-802M73B

1554.94

FU-68SDF-802M31B

1538.19

FU-68SDF-802M75B

1555.75

FU-68SDF-802M33B

1538.98

FU-68SDF-802M77B

1556.55

FU-68SDF-802M35B

1539.77

FU-68SDF-802M79B

1557.36

FU-68SDF-802M37B

1540.56

FU-68SDF-802M81B

1558.17

FU-68SDF-802M39B

1541.35

FU-68SDF-802M83B

1558.98

FU-68SDF-802M41B

1542.14

FU-68SDF-802M85B

1559.79

FU-68SDF-802M43B

1542.94

FU-68SDF-802M87B

1560.61

FU-68SDF-802M45B

1543.73

FU-68SDF-802M89B

1561.42

FU-68SDF-802M47B

1544.53

FU-68SDF-802M91B

1562.23

FU-68SDF-802M49B

1545.32

FU-68SDF-802M93B

1563.05

FU-68SDF-802M51B

1546.12

FU-68SDF-802M95B

1563.86

All wavelengths are referred to vacuum.
Tolerance is

0.05nm.

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: FU-68SDF-802M17B

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: FU-68SDF-802M17B