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Agere Systems
Agere Systems


E2560

E2560/E2580-Type 10 Gbits/s EML Modules



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E2560 pdf
Advance Data Sheet
January 1999
E2560/E2580-Type 10 Gbits/s EML Modules
Features
s Integrated electroabsorptive modulator
s 1.5 µm wavelength
s Characterized for 10 Gbits/s operation
s For use up to 80 km at 10 Gbits/s
s Low modulation voltage
s Temperature stabilized
s Available with and without integral driver IC
s Wavelength selectable to ITU-T standards
s Ultrastable wavelength aging for DWDM
Applications
s SONET/SDH applications
s Ultrahigh capacity WDM system application
s High-speed data communication
s 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 inte-
grate a CW laser with an electroabsorptive modulator
in the same semiconductor chip, and are an exten-
sion 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 dis-
tances of 40 km and 80 km. The package also con-
tains a thermoelectric cooler, thermistor, rear facet
monitor photodiode, and an optical isolator.



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E2560 pdf
E2560/E2580-Type 10 Gbits/s EML Modules
Advance Data Sheet
January 1999
Description (continued)
The nominal input impedance of the E2560 version is 50 . 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 DWDM systems operating at 10
Gbits/s per channel. The device has excellent wavelength stability, supporting operation at 100 GHz channel spac-
ing over 20 years (assuming an end-of-life aging condition of <±100 pm). Typically, no external wavelength stabili-
zation 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
Package Type
Fiber
Connector
RF Input Impedance
Bit Rate
E2560: 7-pin package with GPO connector RF input.
E2580: 13-pin package with GPO connector RF input.
Standard single-mode fiber.
ST ®; other connectors available on request.
50 Ω.
10 Gbits/s.
Pin Information
Table 2. Pin Descriptions
E2560
E2580
Pin Abbreviation
Definition
——
——
——
——
——
——
7 TEC–
Themoelectric cooler–
6 TEC+
Thermoelectric cooler+
5 BACK DET+
Monitor cathode (+)
4 BACK DET–
Monitor anode (–)
3 LASER+
Laser anode
2 THERM
Thermistor
1 THERM, LASER–, Combined thermistor/
CASE
laser cathode/case
Pin Abbreviation
Definition
13 TEC–
12 TEC+
11 VSS
10 DCA
Themoelectric cooler–
Thermoelectric cooler+
Voltage supply to the IC
Duty cycle adjust
9 OA
8 NC
7 NC
6 VEA
5 BACK DET+
Optical amplitude adjust
No connect/reserved
No connect/reserved
Modular offset (on-state)
Monitor cathode (+)
4 BACK DET–
Monitor anode (–)
3 LASER+
Laser anode
2 THERM
Thermistor
1 THERM, LASER–, Combined thermistor/
CASE
laser cathode/case
Note: For full details of 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):
2 Lucent Technologies Inc.



Part Number E2560
Description E2560/E2580-Type 10 Gbits/s EML Modules
Maker Agere Systems - Agere Systems
Total Page 6 Pages
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