Data Sheet, Rev. 1

September 2001

Isolated Laser Module (EM-ILM)

E2500-Type 2.5 Gbits/s Electroabsorption Modulated

4

Agere Systems Inc.

* Operation at a DT of 70 °C – TSET is guaranteed, where TSET is the laser temperature required to achieve the required ITU wavelength,

over life, in a DWDM system (TSET range is 15 °C to 35 °C). In a non-WDM application, TSET is 25 °C.

Modulator

Extinction Ratio

10

—

dB

RF Return Loss (0 GHz to 2 GHz)

10

—

dB

RF Return Loss (2 GHz to 3 GHz)

7—

dB

RF Return Loss (3 GHz to 5 GHz)

3—

dB

–3 dB Bandwidth

BW

3.5

—

GHz

Modulator Current @

——

—

15

mA

Rise/Fall Time (20% to 80%)

——

125

ps

Monitor Diode

Monitor Current

40

1100

µA

Dark Current

—0.1

µA

Capacitance

C

—25

pF

Thermistor

Resistance

T = 25

°C

9.5

10.5

k

Ω

Thermistor Current

—10

100

µA

Thermistor B Constant

B

—

3700 4100

—

Thermoelectric Cooler

TEC Current

°C

—

1.3

A

TEC Voltage

°C

°C

—

2.6

V

TEC Power

°C

°C

—

3.0

W

TEC Capacity

∆T

°C

*—

°C

Laser Module

Optical Isolation

—

°C to 65 °C

30

—

dB

Table 2. Optical and Electrical Specifications (continued)

Parameter

Symbol

Conditions

Min Max

Unit