Data Sheet
24 PIN 10Gb/s Long Reach DWDM Serial
Transmitter Module
MT10EW
The Bookham MT10EW 10Gb/s LR Transmitter Module is a
1550nm, low power, small footprint 24-pin module enabling
high port density. It is designed to support a SONET / SDH or
10GE interface between the photonics layer and the electrical
layer for applications with reach requirements of 80km or
more. The Transmitter allows convenient direct connection to
system card electrical MUX ASICs, using un-clocked mode of
data transfer.
The transmitter has been designed for Dense Wavelength
Division Multiplexed (DWDM) operation for applications up
to 11.1GB/s.
Low power dissipation coupled with small footprint
significantly simplifies high speed card design. This results in
significant savings in card space and development time, and
greatly improved time to market.
The module provides wavelengths on the 50GHz ITU-T grid in
the C band. It is also available for non-WDM applications that
use a single wavelength. Multi functional hardware alarms and
monitors are also available for systems card and network
management.
The MT10EW LR 24 pin Transmitter Module can be used in
existing OC192 and OC192c ports as well as emerging IEEE
802.3ae 10 Gigabit Ethernet WAN / LAN ports.
The MT10EW LR Transmitter Module is optimised for optical
link spans of 80km+ (based on GR-253, ITU G.691 and IEEE
802/3ae system architectures). Reaches in excess of 80km
may be achieved in proprietary networks.
The compact size, low power Transmitter Module is 24 pin
connectorised for convenient surface mount assembly. The
module comprises a hermetically packaged laser device and
Bookham’s InP Mach-Zehnder modulator Technology with
optical isolation and wavelength stabilisation. This ensures
that the optical source remains within optical power and
wavelength limits over variations in temperature and over life.
A microprocessor coupled with internal circuitry and a
Thermo-Electric Cooler (TEC) controls the operation of the
module and ensures the correct laser temperature to achieve
constant wavelength.
Features:
• Incorporates Bookham InP MZ Technology enabling
superior systems performance.
• +3.5 to +7dBm start of life, over temperature optical
output power window
• Internal microcontroller for TX wavelength, power &
opticalperformance control
• Multi functional hardware alarms and monitors for
systems card and network management
• 2 x 12 way 0.1" x 1.5” pitch electrical interface
• 73.4 x 50.0 x 12.7mm MSA compliant outline
• 24pin MSA compliant
• +3.3V / +5V external power supply rails
• Typical power dissipation 3W
• IEC/EN 60825 Class 1M laser safety classification
• Case operating temperature range -5 to +75C
• RoHS 5/6 compliant
Applications:
• 10Gbps fixed wavelength, Long Reach DWDM serial
transmitter module suitable for 80km+
reach applications
• Suitable for use in 1550nm Long Reach applications
based on Telcordia GR-253, ITU-T G.691and IEEE
802.3ae system architectures
• Multi bit rate performance 9.953
Gb/s (OC192, 10GE WAN),
10.3125 Gb/s (10 GE LAN),
10.664 10.709 11.1 Gb/s (FEC),
1
Data Sheet
Characteristics
Unless otherwise stated the following parameters and performances are required over the full
range of operating conditions defined below, from beginning to end of life. The typical values
are referenced to case temperature of +25°C, nominal power supplies, beginning of life (BOL).
Parameter
Positive supply voltage
Positive supply current
TEC supply voltage
TEC supply current
Tolerable module power
supply voltage ripple
Total power dissipation
Differential input sensitivity
data voltage
Differential input sensitivity
clock voltage
for each
input
Note
[1]
AC
coupled, for
each input
Note
[1]
Differential
driven
Note
Note
[2]
[2]
Symbol
Measurement
Conditions
V
cc
I
VCC
V
TEC
I
TEC
Min
4.75
-
3.1
Typ
5.0
Max
5.25
750
Unit
V
mA
V
A
mVpp
3.3
3.5
1.2
Sinewave
1Hz-1MHz.
Note
[10]
V
NM
50
P
DIS
V
DIFF
250
3
400
5.5
500
W
mVpp
V
DIFF
200
250
500
mVpp
Data/clock input impedance
Set-up
Hold time
Z
IN
(differential)
T
SU
T
H
Refer to Set-up and
Hold time definition diagram
V
IH
V
IL
V
OH
V
OL
T
LDA
T
LTDA
11
25
100
V
ps
ps
TXEN, CSEL, logic high
level input voltage
TXEN, CSEL, logic low
level input voltage
LDA, LTDA logic high
level output voltage
LDA, LTDA logic low
level output voltage
LDA
LTDA
TXDIS activation time
TXDIS deactivation time
Isource=
200uA
Isink = 10uA
Note
[3]
Iout<7mA
Iout>-0.5mA
2
0
2.7
0
VCC
0.8
VCC
0.5
50
150
2
50
1
5
V
V
V
V
ms
ms
ms
ms
s
s
mV
%
mV
Note
[4]
T
ACT
T
DEACT
T
WARM
T
COLD_START
V
BF
-
-37
500
Note
[5]
[6]
Wavelength stabilization time Note
after TXDIS deactivation
Cold start wavelength
stabilization time
Normalized back-facet
monitor voltage
Note
[7]
TXDIS = OFF
Note
[8]
[9]
-
+25
20
Back-facet monitor accuracy Note
Back-facet monitor voltage
TXDIS = ON
2
Data Sheet
Notes:
[1] Two complementary signals of equal amplitude on each input.
[2] Referred to data level 20% or 80%, see diagram below for definitions.
[3] When not connected the TXDIS, CSEL inputs are considered in a low state, (internal pull-down resistor).
Clocked mode, CSEL=low is presently unsupported for the MT10EW.
[4] Time measured from rising edge of shutdown signal until optical output has turned off (<-40dBm).
[5] Time measured from falling edge of shutdown signal until optical output power is over 0dBm and emitted wavelength is at
nominal value +/- 200 pm. The unit is assumed to be powered on for at least 30s.
[6] Time measured from falling edge of shutdown signal until optical output power is within the specified range and
wavelength within +/-30pm.
The unit is assumed to be powered on for at least 30 seconds.
[7] Time measured from enabling laser until optical output power is within the specified range and wavelength within +/-120pm.
Module powered for 5 seconds minimum prior to enabling laser.
For any initial case temperature within the specified operational range and with TXDIS = off.
[8] Back facet monitor voltage is measured from pin 2 to GND and normalized at the beginning of life relative to the initial optical
output power (Tcase = 25°C, nominal power supply). The relationship is approximately linear, as represented by the equation:
Back-facet voltage = V
BF
. (measured optical output power/initial BOL optical output power), power measured in mW.
For example, a 50% variation of this voltage means a 50% drift of the optical output power.
Nominal
Characteristics
[9] Total relative variation of the mean modulated optical fibre output power over the operating case temperature and supply
voltage ranges for a constant back facet voltage.
[10] A sinewave is superposed to the DC supply voltage. The device must still meet the optical and electrical specifications when
the magnitude of the sinewave measured at any VCC pin (pin 13 and 24) is up to the specified value V
NM
3
Data Sheet
Optical
Parameter
Mean modulated optical
output power
Mean modulated optical
output power with
module disabled
Operational central
wavelength range
Spectral width
Symbol
P
NOM
P
SDC
Measurement
Conditions
BOL Note
[1]
EOL Note
[1]
Min
3.5
3
Typ
Max
7
7.5
-40
Unit
dBm
dBm
_
∆_
Note
Note
Note
Note
1528.77
0.3
30
-20
-30
20
10
dB
1568.57
0.5
nm
nm
[2]
[3]
[4]
Side mode suppression ratio SMSR
BOL central
wavelength deviation
EOL central
wavelength deviation
Optical return loss
Optical extinction ratio
(unfiltered)
Receiver dispersion
power penalty
∆_BOL
∆_EOL
ORL
ER
DP
+20
+30
pm
pm
dB
dB
[4]
Average
polarisation state
10.709Gb/s 2^31-1
NRZ PRBS data
10.709Gb/s 2^31-1
NRZ PRBS data,
1600ps/nm dispersion,
OSNR
0.1
>36dB, RX
threshold optimised,
BER 1e-8.
20%-80%
10.709Gb/s 2^31-1
NRZ PRBS data,
Note [
5]
2
dB
Optical rise/fall times
Output Jitter
T
R
/ T
F
35
Telcordia GR-253-
compliant for SONET OC-
192 / SDH STM-64-ITU-T
G.82511 compliant for
SONET OC-192 / SDH
STM-64 with FEC
ps
Notes:
[1] Mean power measured at optical fibre output. When there is no modulation signal at the data input the
average power shall be less than +7.5dBm.
[2] Full spectral width measured 20 dB down from the maximum of center wavelength peak under
full modulation condition.
[3] Ratio of the average output power in the dominant longitudinal mode to the power in the most significant
side mode peak under full modulation condition.
[4] Deviation referenced to the ITU standardized wavelength.
[5] Output optical jitter measured through an electrically filtered reference receiver.
4
Data Sheet
Absolute Maximum Ratings
Maximum and/or minimum values of critical parameters which will not
permanently damage the device, but for which the spec may not hold.
Typical headings are:
Parameter
Description
Storage temperature
[1]
R
H
Storage relative humidity
[2]
Minimum fiber bend radius
V
CC
V
TEC
V
RFDC
TXEN
ESD
Positive supply voltage
TEC supply voltage
Input data and clock DC voltage
TX disable input
ESD resistance
[3]
Min
-40
5
30
-0.3
-0.3
-0.3
-0.3
Class 2
precautions
[4]
+6
+6
VCC
VCC
400
V
Max
+85
95
Unit
ºC
%
mm
V
V
V
Notes:
[1]
[2]
[3]
[4]
Non operational.
Non condensing.
Human body model.
In accordance with Telcordia TR-NWT-000870, ESD class 2.
Applications Support
The following documents are available to support customers using this product:
Component Mounting Recommendations For the 24 pin Long Reach
Serial Transmitter Module.
Characterisation of the 24 pin Long Reach Serial Transmitter Module
in typical optical system.
Evaluation platform for the 24 pin Long Reach Serial Transmitter Module
AN0145
ANxxxx
AN0144
Optical component evaluation platforms are available for all Bookham optical components.
Contact your regional sales representative for further information.
Power Supply Filtering Recommendations
Care should be taken when placing PCB power transmission tracks and adding additional filtering components as
these may affect module operation. It is recommended that any series inductance integrated within external power
supply filters are limited to 4.7uH max.
5
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