Data Sheet
January 2006
E2560-Type 10 Gb/s EML Modules
for 40 km DWDM Transmission
Description
The E2560 EML is designed for 10 Gb/s DWDM
transmission applications. It integrates a CW laser
with an electroabsorptive modulator in the same
semiconductor chip and is an extension of CyOptics’
existing E2500-series of devices. These devices can
replace external modulators that are often bulkier,
more expensive, and require more drive electronics
than the EML. Both series use a small-profile
GPO
™
connector to handle the RF signal. The package also
contains a thermoelectric cooler, thermistor, rear-
facet monitor photodiode, and an optical isolator.
The E2560 is available for transmission distances of
up to 40 km, and is available in a range of ITU-T
wavelengths for use in DWDM systems operating at
10 Gb/s per channel.
The nominal input impedance of the E2560 version is
50
Ω.
The package is qualified to the
Telcordia
Technologies
™
TA-TSY-000468 standard.
The devices exhibit excellent wavelength stability,
supporting operation at 100 GHz channel spacing
over 20 years (assuming an end-of-life aging condi-
tion of <±100 pm). Typically, no external wavelength
stabilization is required in systems of this type, using
the CyOptics E2560 EMLs. The package also offers
excellent stability of wavelength vs. case tempera-
ture, with a maximum coefficient of ±0.5 pm/°C.
®
Features
n
n
n
n
n
n
n
n
Integrated electroabsorptive modulator
1.5
µm
wavelength
Characterized for 10 Gb/s operation
For use up to 40 km at 10 Gb/s
Low modulation voltage
Temperature stabilized
Wavelength selectable to ITU-T standards
Ultrastable wavelength aging for DWDM
Applications
n
n
n
n
SONET/SDH applications
Ultrahigh capacity WDM system application
High-speed data communication
Digitized video
E2560-Type 10 Gb/s EML Modules
for 40 km DWDM Transmission
Data Sheet
January 2006
Module Characteristics
Table 1. Module Characteristics
Parameter
Package Type
Fiber
Optical Connector
RF Input (SMP-type connector)
Bit Rate
Standard single-mode fiber.
Various connectors available on request (See Table 7).
Impedance 50
Ω (
Exterior of RF connector is connected to case)
up to12.5 Gb/s.
Description
7-pin package with GPO connector RF input.
Pin Information
Table 2. Pin Descriptions
Pin
Number
1
2
3
4
5
6
7
Pin Name
THERM, LASER-, CASE
THERM
LASER+
BACK DET–
BACK DET+
TEC+
TEC–
Description
Combined Thermistor/Laser Cathode/Case
Thermistor
Laser anode*
Monitor anode (–)
Monitor cathode (+)
Thermoelectric cooler (+)
Thermoelectric cooler (–)
* Laser cathode and modulator ground are connected to case.
Target Specifications
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Table 3.
Absolute Maximum Ratings
Parameter
Laser Diode Reverse Voltage
Laser Diode Forward Current
Optical Output Power
Modulator Reverse Voltage
Modulator Forward Voltage
Monitor Diode Reverse Voltage
Monitor Diode Forward Voltage
Storage Temperature
Operating Temperature
Thermistor Temperature
1
Thermoelectric Cooler in Heating Mode
1
1. To prevent package over temperature conditions.
Conditions
CW
CW
CW
—
—
—
—
—
—
—
—
Min
—
—
—
—
—
—
—
—
—
—
—
Max
2
150
10
5
1
10
1
–40 to +85
–10 to +75
100
0.5
Unit
V
mA
mW
V
V
V
V
°C
°C
°C
A
2
For additional information and latest specifications, see our website:
www.cyoptics.com
Data Sheet
January 2006
Characteristics
E2560-Type 10 Gb/s EML Modules
for 40 km DWDM Transmission
Minimum and maximum values specified over operating case temperature range. Typical values are measured at
room temperature (25°C) unless otherwise noted
Table 4. Optical and Electrical Specifications
(Chip operating temp. = 20
°C
to 35
°C,
except where noted.)
Parameter
Threshold Current (BOL)
Forward Voltage
Operating Current
Threshold Power
Fiber Output Power (Average)
Peak Wavelength
(Wavelength can be specified to the ITU
wavelength channels. See Table 5.)
Side-mode Suppression Ratio
Symbol
I
TH
V
F
I
OP
P
TH
P
AVG
λ
PK
Conditions
—
I
F
= I
OP
@ T
OP
—
I
F
~ I
TH,
V
M
* = 0V
Note 1
V
M
= V
ON
T
LASER CHIP
= T
OP
I
F
=
I
OP
V
M
= 0 V
T
LASER CHIP
= T
OP
I
F
=
I
OP
Note 1,2
Min
5
—
50
—
-3
1530
Max
35
2.2
100
80
-1
1563
Unit
mA
V
mA
µW
dBm
nm
SMSR
35
—
dB
Dispersion Penalty, BER = 10
–10
Modulator
Peak to Peak Modulator Voltage
On-State Modulator Voltage
Extinction Ratio
RF Return Loss (0 GHz to 6 GHz)
RF Return Loss (6 GHz to 8 GHz)
RF Return Loss (8 GHz to 10 GHz)
–3 dB Bandwidth (E2560-series)
Rise/Fall Time(20%—80%)
Monitor Diode
Monitor Current
Dark Current
Capacitance
Thermistor
Resistance
Thermistor Current
Thermistor B Constant
Thermoelectric Cooler
TEC Cooling Current
5
TEC Voltage
TEC Power
TEC Capacity
Optical Isolation
Optical Isolation
DP
V
PP
V
ON
ER
RF
S
11
S
11
S
11
BW
t
R
/t
F
I
BD
I
D
C
R
THERM
I
TC
B
I
TEC
V
TEC
P
TEC
∆T
—
—
1.5
-0.7
10
10
7
5
11
—
40
—
—
9.5
10
3700
—
—
—
—
30
2.0
2.5
0
—
—
—
—
—
40
1100
0.1
25
10.5
100
4100
1.1
2.6
2.9
55
—
dB
V
V
dB
dB
dB
dB
GHz
ps
µA
µA
pF
kΩ
µA
—
A
V
W
C
dB
Note 1, 4, 6
V
M
= –0.8 V,
I
F
= I
OP
V
M
= –0.8 V,
I
F
= I
OP
V
M
= –0.8 V,
I
F
= I
OP
V
M
= –0.8 V,
I
F
= I
OP
Note 4
V
BD
= 5, V,
I
F
=
I
OP
V
BD
= 5 V
V
BD
= 5 V, F = 1 MHz
T = 25
°C
—
—
Note 3
Note 3
Note 3
Note 3
Note 3
For additional information and latest specifications, see our website:
www.cyoptics.com
3
E2560-Type 10 Gb/s EML Modules
for 40 km DWDM Transmission
Data Sheet
January 2006
Target Specifications
(continued)
Table 4. Optical and Electrical Specifications
(Chip operating temp. = 20
°C
to 35
°C,
except where noted.)
(continued)
Parameter
Package
Output Power Stability
Wavelength vs. Case Temperature
* V
M
= Modulator Voltage (DC)
1. Modulated operational values are defined to be I = I
OP
, T = T
OP
, at all specified operating conditions, 9.95328 Gb/s modulation, 2
31
– 1 PRBS
(operating parameters: I
op
, T
op
, V
on
for E2560 will be provided).
Laser diode temperature can be set in a 20
°C
to 35
°C
range to take advan-
tage of wavelength tuning, provided that it will meet all other specs at this preset temperature.
2. 800ps/nm (40 km)
.
3. T
CASE
= 75
°C,
T
op
(
LASERCHIP)
= 20
°C
to 35
°C.
4. Without filter, O/E bandwidth>20GHz.
5. Maximum TEC current for Heating is less than 0.5A.
6. At V
pp
=2.5V
Symbol
Conditions
T
CASE
= –10
°C
to +75
°C
T
CASE
= –10
°C
to +75
°C
Min
–0.5
–0.5
Max
0.5
0.5
Unit
dB
pm/°C
dλ/ dT
4
For additional information and latest specifications, see our website:
www.cyoptics.com
Data Sheet
January 2006
E2560-Type 10 Gb/s EML Modules
for 40 km DWDM Transmission
Outline Diagram
0.020
(0.508)
0.100
(2.54)
0.291
(7.384)
LEAD 1
0.215
(5.45)
0.010
±
0.002
(0.25
±
0.064)
LEAD 7
0.50
(12.7)
MIN
TRADEMARK CODE LASER SERIAL NUMBER
AND DATE CODE LABEL IN AREA SHOWN
BEND LIMITER
0.551
(13.99)
0.500
(12.7)
0.350
(8.89)
0.200
(5.08)
0.498
(12.64)
1.025
(26.04)
∅
0.106
(2.7)
PLACES
0.078
(1.98)
0.190
(4.822)
2.032
(51.61)
0.180
(4.56)
0.820
(20.83)
33.0
(838.20)
MIN
0.98
(2.5)
0.260
(6.6)
0.365
(9.27)
0.56
(1.42)
1.180
(29.97)
0.030
(0.75)
0.228
(5.78)
0.215
(5.47)
CONNECTOR TYPE
AS SPECIFIED
1-1006(F).r1
For additional information and latest specifications, see our website:
www.cyoptics.com
5
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