JAN06

(2/6)

Mitsubishi Electric Corporation reserves the right to make changes to the products or information contained herein

without notice. No liability is assumed as a result of their use or application.

MITSUBISHI (OPTICAL DEVICES)

FU-68SDF-x9yyMzzF

1.55

μm DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL

ELECTRICAL/OPTICAL CHARACTERISTICS (Tld=Tset, Tc=25

°C unless otherwise noted)

Limits

Parameter

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

-x902MzzF

2

Optical output

CW,If=Iop

-x910MzzF

10

mW

Threshold current

Ith

CW

-

10

25

mA

-x902MzzF

-

-

100

Optical output power

at threshold current

Pth

CW, If=Ith

-x910MzzF

-

-

150

μW

-x902MzzF

-

40

65

Operating current

Iop

-x910MzzF

-

50

95

mA

Operating voltage

Vop

-

1.3

1.8

V

Input impedance

Zin

-

25

-

Ω

Light-emission central

wavelength

λc

(Note 2)

See Ordering Information

and Table 1

nm

Central wavelength drift with

case temp.

Δλc/ΔTc

Tc=-20~70

°C

-1

-

0

pm/

°C

Laser operating temperature

Tset

-

20

-

35

°C

Spectral width

Δλ

(Note 2), -20dB

-

0.2

0.4

nm

Side mode suppression ratio

Sr

(Note 2)

33

40

-

dB

Dispersion penalty

Pp

(Note 2), at 10

+3000ps/nm

-

-

2

dB

Cutoff frequency

(-1.5dB optical)

fc

3.5

-

-

GHz

Rise and fall time (10~90%)

tr, tf

(Note 2)

-

-

150

psec

Relative intensity noise

Nr

-

-155

-145

dB/Hz

Tracking error

Er

Tc=-20~70

°C, APC, ATC

(Note 3)

-

-

0.5

dB

-x902MzzF

0.057

0.07

0.15

Differential efficiency

η

CW

-x910MzzF

0.15

0.25

0.35

mW/m

A

Linearity

Δη

(Note 4)

-20

-

20

%

-x902MzzF

0.1

-

2

Monitor current

Imon

Vrd=5V

-x910MzzF

0.2

-

3

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 2) 2.48832Gb/s NRZ, 2

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

Note 3) Er=max|10

×log(Pf / Pf@25°C)|

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

Parameter

Symbol

Test Conditions

Limits

Unit

Min.

Typ.

Max.

Thermistor resistance

Rth

Tld=25°C

9.5

10

10.5

k

Ω

B constant of Rth

B

-

-

3950

-

K

Cooling capacity

ΔT

50

-

-

°C

Cooler current

Ipe

-

0.6

1

A

Cooler voltage

Vpe

-

1.2

2

V