SFP Optical Transceivers
for 2.7Gb/s 180km DWDM
Applications
IGP-28111-**
The Bookham IGP-28111 optical transceiver is a
high-performance, cost-effective module for serial
optical data communication applications up to
4.25Gb/s. The IGP-28111 is designed to accept
DWDM SONET/SDH (with or without FEC) and
Ethernet protocol traffic for 180km links.
The modules are designed for single mode fibre and operate at
ITU wavelengths across the C- and L-band. They incorporate
Bookham’s exclusive IO-PKG™ optical packaging platform that
scales with networking equipment platform upgrades.
The modules aid system hardware engineers in implementing
low-cost DWDM solutions, which are protocol transparent. The
“hot pluggable” feature built into every module reduces
manufacturing cost, inventory costs and allows optical port
upgrades at the customer premise. Built-in remote monitoring
via digital diagnostics allows user access to static and dynamic
data as well as module condition.
The IGP-28111 uses the established Bookham Buried
Heterostructure Directly Modulated Laser (BH DML) packaged
in a compact cooled TOSA. The transmitter has full IEC-825
and CDRH Class I laser safety certification.
The Bookham IGP-28111 module has been extensively tested
utilizing industry standard single mode fibres in order to ensure
compatibility with SONET-grade enterprise, access and metro
systems. Additionally, all Bookham products are UL, FCC, IEC,
and CDRH compliant and either certified or pending
certification.
Features
180km (3600ps/nm) transmission
compliant to V-16.2
DWDM SFP MSA compatible
+4dBm optical power output
100GHz channel spacing
C- and L-Band coverage
Up to 4.25Gb/s data rate
High accuracy thermal wavelength
management
Extended receiver sensitivity
Less than 1.3W power dissipation
Single +3.3V power supply
0°C to +70°C temperature range
Hot Pluggable
Duplex LC connector
Enhanced digital diagnostics
Low EMI
Compliance
CDRH & IEC Laser Safety
FCC Class B EMI
MIL-STD-883 ESD
IEC/EN60950 Product Safety
Applications
OC-48/STM-16/OTN-1
DWDM Metro/Access Networks
Ethernet IEEE 802.3ae
Network Edge devices, µMSPP
Subscriber Loop label
Absolute Maximum Ratings
Parameter
Storage Temperature
Supply Voltage
Data AC Voltage
Data DC Voltage
Optical Input Received Power
Symbol
T
STG
V
CC
Tx+, Tx-
Tx+, Tx-
P
IN
Min
-40
-0.3
-0.5
Max
85
4.0
2.4
3.47
+5
Units
ºC
V
V
PP
V
dBm
Operating Conditions
Parameter
Case temperature
Supply Voltage
Supply Current (Note 1)
Module Power Dissipation
In-rush Current (Note 2)
Symbol
T
CASE
V
CC
I
CC
P
I
IN-RUSH
Min
0
3.13
Typical
3.30
265
0.8
Max
70
3.47
375
1.3
30
Units
°
C
V
mA
W
mA
Note 1: Supply current is shared between V
CCTX
and V
CCRX
.
Note 2: In-rush is defined as 30mA above steady state current requirements.
Transmitter Operating Specifications – Optical
All specifications relate to End of Life (EOL) values over temperature and supply voltage, unless
otherwise stated.
Parameter
Data Rate
ITU-T Center Wavelength
Center Wavelength (SOL)
Wavelength Stability
Optical Transmit Power
Symbol
BR
C
SOL
C
Value
Min
0.125
1530
C
C
Typical
2.667
Max
4.25
1606
Units
Gb/s
nm
nm
nm
dBm
dBm
nm
dB
dB
Notes
Refer to Table 6 &
Table 7 for details
Where
C
is a defined
ITU-T wavelength
Modulated at
2.488Gb/s
Measured at -20dB
down from peak
Filtered eye
Modulated at
2.667Gb/s
Modulated at
4.25Gb/s
Modulated at
1.25Gb/s
RMS
Peak-to-Peak
– 0.05
– 0.1
C
– 0.04
C
C
C
+0.1
P
O
2
4
-40
0.2
0.4
Optical Transmit Power
(disabled)
P
TX_DISABLE
Spectral Width
SMSR
Extinction Ratio
ER
20
30
8.2
-1200
3600
1600
10000
2
10
70
ps/nm
ps/nm
ps/nm
dB
mUI
mUI
Dispersion Tolerance
DT
-1200
-1200
Dispersion Penalty
Jitter Generation (SOL)
Jitter Generation (SOL)
Output Optical Eye
DP
TJ
RMS
TJ
P-P
Compliant with Bellcore GR-253-CORE & ITU G.957 for SONET/SDH and with
IEEE 802.3ae for Ethernet and Fibre Channel
2
Receiver Operating Specifications – Optical
All specifications relate to End of Life (EOL) values over temperature and supply voltage, unless
otherwise stated.
Parameter
Symbol
Value
Min
Typical
Max
-28
-24
-34
-24
-22
-7
-9
1260
-40
0.5
Units
dBm
dBm
dBm
dBm
dBm
dBm
dBm
nm
dB
dBm
dBm
dB
Notes
Note 1
Note 2
Note 3
Note 4
Note 5
Note 1
Note 5
Note 6
Receiver Sensitivity (OSNR = 30dB)
Receiver Sensitivity (OSNR = 21dB)
Receiver Sensitivity (OSNR = 25dB)
Maximum Input Power
Input Operating Wavelength
Reflectance
Loss of Signal - Asserted
Loss of Signal - Deasserted
Hysteresis
Rx
SENS_1
Rx
SENS_2
Rx
SENS_3
Rx
OVERLOAD
RX
R
RX
P
A
P
D
P
A
- P
D
1610
-27
-33
-31
4
Note 1: Average power at 1 x 10
-12
BER and data rates of 125Mb/s to 2.667Gb/s.
Note 2: Average power at 1 x 10
-12
BER and a data rate of 4.25Gb/s.
Note 3: Average power at 1 x 10
-4
BER and a data rate of 2.667Gb/s.
Note 4: Average power at 1 x 10
-12
BER and a data rate of 2.667Gb/s over 180km fibre.
Note 5: Average power at 1 x 10
-12
BER and a data rate of 4.25Gb/s over 80km fibre.
Note 6: Between 1260nm and 1535nm minimum receiver sensitivity is reduced by 2dB (-26dBm minimum).
Transmitter Operating Specifications – Electrical
Parameter
Data Rate
Supply Voltage
Supply Current
PECL/CML Input
Input Rise/Fall
TX_DISABLE High
TX_DISABLE Low
TX_FAULT High
TX_FAULT Low
Symbol
BR
V
CCTX
I
CCTX
V
TXDIFF
T
R
/ T
F
V
DH
V
DL
V
FH
V
FL
Value
Min
0.125
3.13
500
Typical
2.667
3.3
300
Max
4.25
3.47
380
1600
160
Units
Gb/s
V
mA
mV
ps
V
V
V
V
Notes
Note 1
Differential pk-pk.
Note 2
20% - 80%
Note 2
2
-0.3
2
-0.3
3.47
0.8
3.47
0.8
Note 1: Supply current is shared between V
CC
T and V
CC
R
Note 2: Test conditions: 100 differential (from 100MHz to 2.5GHz); V
TXDIFF
= | (V
TD
+) – (V
TD
-) |
3
Receiver Operating Specifications – Electrical
Parameter
Data Rate
Supply Voltage
Supply Current
Differential Output Swing
Output Jitter (Data)
Rise/Fall Time
Loss of Signal - Output Voltage High
Loss of Signal - Output Voltage Low
Symbol
BR
V
CC_TX
I
CC_RX
V
RXDIFF
TJ
RX
T
R
/ T
F
V
OH
V
OL
Value
Min
0.125
3.13
370
Typical
2.667
3.3
300
Max
4.25
3.47
380
2000
140
140
Units
Gb/s
V
mA
mV
ps
ps
V
V
Notes
Note 1
Differential pk-pk.
Note 2
Note 3
20% - 80%
Note 2
2
-0.3
3.47
0.8
Note 1: Supply current is shared between V
CCTX
and V
CCRX
.
Note 2: Test conditions: 100 differential (from 100MHz to 2.5GHz); V
RXDIFF
= | (V
RD
+) – (V
RD
-) |
Note 3: Contributed jitter from receiver over specified operating conditions
Low Speed Electrical Signal Timings
The DWDM SFP MSA document specifies the full details of the low speed electrical interface in
Section 3, including timings and both AC and DC requirements.
Table 1: I/O Timing for Hardware Control and Status Functions
Parameter
TX_DISABLE Assert Time
TX_DISABLE Negate Time
Time to initialize, including
reset of TX_FAULT
Startup time
TX_FAULT/INT Assert Time
TX_DISABLE to Reset
LOS Assert Time
LOS NegateTime
Serial ID Clock Rate
Symbol
t_off
t_on
t_init
t_startup
t_fault
t_reset
t_los_on
t_los_off
f_serial_clock
Min
Max
20
20
300
90
50
Unit
ms
ms
ms
s
ms
ms
us
us
kHz
Condition
Time from rising edge of TX_DISABLE to
when the optical output falls below 10% of
nominal
Time from falling edge of TX_DISABLE to
when the modulated optical output rises
above 90% of nominal
From negation of TX_FAULT/INT using
TX_DISABLE Optical power going to 90% of
final value
From power on to negation of TX
FAULT/INT, indicating laser temperature has
stabilised to within operating range.
Time from fault to TX_FAULT/INT on.
Time TX_DISABLE must be held high to
reset TX_FAULT/INT
Time from LOS state to RX LOS assert
Time from non-LOS state to RX LOS
deassert
10
100
100
100
4
Systems Performance Capabilities
The following section demonstrates the typical systems level performance capabilities of the IGF-
28111 DWDM SFP Transceiver. The enhanced performance and flexibility of the module is
highlighted through operation at various data rates and optical signal to noise ratio (OSNR) levels.
1.E-04
1.E-05
1.E-06
0km
1.E-07
Bit Error Rate
75km
150km
225km
1.E-08
300km
Expon.
(0km)
Expon.
(75km)
Expon.
(225km)
Expon.
1.E-09
1.E-10
1.E-11
1.E-12
-36
-35
-34
-33
Receiver Sensitivity ( dBm )
-32
-31
-30
Figure 1: Receiver Sensitivity for OC-48 Transmission over 0km to 300km (30dB OSNR)
5
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