AGERE E2580, E2560 Datasheet

Advance Data Sheet
January 1999

E2560/E2580-Type 10 Gbits/s EML Modules

Features

■

Integrated electroabsorptive modulator

■

1.5 µm wavelength

■

Characterized for 10 Gbits/s operation

■

For use up to 80 km at 10 Gbits/s

■

Low modulation voltage

■

Temperature stabilized

■

Available with and without integral driver IC

■

Wavelength selectable to ITU-T standards

■

Ultrastable wavelength aging for DWDM

Applications

■

SONET/SDH applications

■

Ultrahigh capacity WDM system application

■

High-speed data communication

■

Digitized video

Description

The E2560 (without integral driver IC) and E2580
(with integral driver IC) are devices for 10 Gbits/s
DWDM or TDM transmission applications, which inte­grate a CW laser with an electroabsorptive modulator
in the same semiconductor chip, and are an exten­sion of Lucent Technologies Microelectronics
Groups’ existing E2500 series of devices. Both types
use a small-profile Gilbert GPO connector to handle
the RF signal. The device is typically coupled with a
number of erbium-doped fiber amplifiers, such as
Lucent Technologies' 1724-series, in order to ensure
that sufficient optical power reaches the receiver.
These devices can replace external modulators
which are often bulkier, more expensive, and require
more complex drive electronics than the EML. Both
E2560 and E2580 are available for transmission dis­tances of 40 km and 80 km. The package also con­tains a thermoelectric cooler, thermistor, rear facet
monitor photodiode, and an optical isolator.

Advance Data Sheet
E2560/E2580-Type 10 Gbits/s EML Modules January 1999

2 Lucent Technologies Inc.

Description

(continued)

The nominal input impedance of the E2560 version is 50 Ω. The package is qualified to the Bellcore TA-TSY-
000468 standard.

Both E2560 and E2580 are available in a range of ITU-T wavelengths for use in D WDM systems operating at 10
Gbits/s per channel. The device has excellent wavelength stability , supporting operation at 100 GHz channel spac­ing over 20 years (assuming an end-of-life aging condition of <±100 pm). Typically, no external wavelength stabili­zation is required in systems of this type, using Lucent's E2500 series EMLs. The package also offers excellent
stability of wavelength vs. case temperature, with a maximum coefficient of 0.5 pm/°C.

Module Characteristics

Table 1. Module Characteristics

Pin Information

Table 2. Pin Descriptions

Note: For full details o f pin functions and required bias levels for the version with the IC, refer to

E2580 EML with Integral Driver IC: Pin

Definitions And Operation

Application Note (TBD):

Package Type E2560: 7-pin package with GPO connector RF input.

E2580: 13-pin package with GPO connector RF input.
Fiber Standard single-mode fibe r.
Connector

ST

®

; other connectors available on request.
RF Input Impedance 50 Ω.
Bit Rate 10 Gbits/s.

E2560 E2580

Pin Abbreviation Definition Pin Abbreviation Definition

— — — 13 TEC– Themoelectric cooler–
— — — 12 TEC+ Thermoelectric cooler+
—— — 11V

SS

Voltage supply to the IC
— — — 10 DCA Duty cycle adjust
— — — 9 OA Optical amplitude adjust
— — — 8 NC No connect/reserved

7 TEC– Themoelectric cooler– 7 NC No connect/reserved
6 TEC+ Thermoelectric cooler+ 6 VEA Modular offset (on-state)
5 BACK DET+ Monitor cathode (+) 5 BACK DET+ Monitor cathode (+)
4 BACK DET– Monitor anode (–) 4 BACK DET– Monitor anode (–)
3 LASER+ Laser anode 3 LASER+ Laser anode
2 THERM Thermistor 2 THERM Thermistor
1 THERM, LASER–,

CASE

Combined thermistor/
laser cathode/case

1 THERM, LASER–,

CASE

Combined thermistor/

laser cathode/case