Wavelength-Selected, High-Power D2587P-Type (with Wavelength

Data Sheet, Rev. 2

Locker)/D2547P-Type Isolated DFB Laser Modules

July 2001

6

Agere Systems Inc.

Minimum and maximum values are testing requirements. Typical values are device characteristics and are results

of engineering evaluations; they are for information purposes only and are not part of the testing requirements.

* Standard operating condition is 5.0 V reverse bias.

† Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C.

* Custom wavelengths available.

† The

Table 4. D2547P-Type Electrical Characteristics (at 25 °C laser temperature)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Threshold Current

—

—

15

40

mA

Drive Current

—

—

—

165

mA

Laser Forward Voltage

—

2

2.5

V

Monitor Reverse-bias Voltage*

—3

5

10

V

Back-facet Monitor Current:

0.2

—

—

mA

Monitor Dark Current

—

0.01

0.1

µA

Input Impedance

——

25

—

Ω

Thermistor Current

—10

—

100

µA

—

—

9.1

9.6

10.1

—

Thermistor Resistance

9.5

—

10.5

k

Ω

Laser Submount Temperature

—

20

—

35

°C

TEC Current

—

—

1.7

A

TEC Voltage

—

—

2.8

V

TEC Capacity

—

—

50

°C

Table 5. D2547P-Type Optical Characteristics (at 25 °C laser temperature)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Peak Optical Output Power

—20.0

—

—

mW

Center Wavelength*

(See Ordering Information,

page 12.)

1528.77

—

1610.06

nm

Line Width (3 dB full width)

∆λ

—

2

10

MHz

Side-mode Suppression Ratio

SMSR

CW

35

45

—

dB

Relative Intensity Noise

RIN

200 MHz < f < 10 GHz

—

—

–135

dB/Hz

Optical Isolation

—

30

—

—

dB

Optical Polarization Extinction

—

0 °C to 75 °C

20

—

—

dB

FM Efficiency

FM

—

100

—

MHz/mA

Wavelength Drift (EOL)

Tested over

25-year lifetime

——

±0.1

nm