Finisar Corporation – March 2018 Rev B01 Page 1
Product Specification
40GE SWDM4 QSFP+ Optical Transceiver Module
FTL4S1QE1C
9B
PRODUCT FEATURES
• Hot-pluggable QSFP+ form factor
• 240m operation over duplex OM3
MMF (350m over OM4, 440m
over OM5)
• Supports 41.2 Gb/s aggregate bit
rates
• Uncooled 4x10Gb/s SWDM
transmitter
• Built-in SWDM mux and demux
• Power dissipation < 2.5W
• Commercial case temperature
range 0°C to 70°C
• XLPPI electrical interface
• Duplex LC receptacles
• Built-in digital diagnostic
functions, including Tx/Rx power
monitoring
• RoHS-6 compliant
1
APPLICATIONS
• 40G Ethernet over duplex MMF
• Allows upgrades from 10GBASE-SR
without changing fiber plant
Finisar’s FTL4S1QE1C QSFP+ transceiver modules are designed for use in 40 Gigabit
Ethernet links over duplex multimode fiber. They are compliant with the QSFP+ MSA
1,2
and IEEE 802.3ba XLPPI electrical interface
3
. Digital diagnostics functions are available
via an I2C interface, as specified by the QSFP+ MSA. The optical transceiver is compliant
per the RoHS Directive 2011/65/EU. See Finisar Application Note AN-2038 for more
details.
3B
PRODUCT SELECTION
16B
FTL4S1QE1C
FTL: Finisar transceiver Q: QSFP+ form factor C: Commercial temperature range
4: 4 optical WDM channels E: Ethernet
S1: Shortwave WDM 1: First generation product
FTL4S1QE1C Product Specification
Finisar Corporation – March 2018 Rev B01 Page 2
I. Pin Descriptions
Figure 1 – QSFP+ MSA-compliant 38-pin connector
Pin
6B
Symbol Name/Description Notes
1
GND
Ground
1
2
Tx2n
Transmitter Inverted Data Input
3
Tx2p
Transmitter Non
-
Inverted Data Input
4
GND
Ground
1
5
Tx4n
Transmitter Inverted Data Input
6
Tx4p
Transmitter Non
-
Inverted Data Input
7
GND
Ground
1
8
ModSelL
Module Select
9
ResetL
Module Reset
10
Vcc Rx
+3.3 V Power supply receiver
11
SCL
2
-
wire serial interface clock
12
SDA
2
-
wire serial interface data
13
GND
Ground
1
14
Rx3p
Receiver Non
-
Inverted Data Output
15
Rx3n
Receiver Inverted Data Output
16
GND
Ground
1
17
Rx1p
Receiver Non
-
Inverted Data Output
18
Rx1n
Receiver Inverted Data Output
19
GND
Gr
ound
1
20
GND
Ground
1
21
Rx2n
Receiver Inverted Data Output
22
Rx2p
Receiver Non
-
Inverted Data Output
23
GND
Ground
1
24
Rx4n
Receiver Inverted Data Output
25
Rx4p
Receiver Non
-
Inverted Data Output
FTL4S1QE1C Product Specification
Finisar Corporation – March 2018 Rev B01 Page 3
26
GND
Ground
1
27
ModPrsL
Module Pre
sent
28
IntL
Interrupt
29
Vcc Tx
+3.3 V Power supply transmitter
30
Vcc1
+3.3 V Power Supply
31
LPMode
Low Power Mode
32
GND
Ground
1
33
Tx3p
Transmitter Non
-
Inverted Data Input
34
Tx3n
Transmitter Inverted Data Input
35
GND
Ground
1
36
Tx1p
Transmitter Non
-
Inverted Data Input
37
Tx1n
Transmitter Inverted Data Input
38
GND
Ground
1
U
Notes
1. Circuit ground is internally isolated from chassis ground.
II. General Product Characteristics
Parameter Value Unit Notes
Module Form
Factor
QSFP
+
Maximum
A
ggregate Data Rate
41.2
Gb
/s
Maximum
Data Rate per
Lane
10.3
Gb
/s
Protocols Supported
40
G Ethernet
Electrical Interface and Pin-out 38-pin edge connector Pin-out as defined by the
QSFP
+
MSA
M
aximum Power Consumption
2
.5
W
atts
Management Interface Serial, I2C-based, 400 kHz
maximum frequency
As defined by the QSFP+ MSA
Data Rate Specifications
Symbol
Min
Typ
Max
Units
Ref.
Bit Rate per Lane BR 10.3125 Mb/sec 1
Bit Error Ratio
BER
10
-12
2
Link distance o
n
OM3
d
0
240
meters
Link distance on OM4
d
0
3
5
0
meters
U
Notes
U
:
1. Compliant with XLPPI per IEEE 802.3ba.
2. Tested with a PRBS 2
31
-1 test pattern.
FTL4S1QE1C Product Specification
Finisar Corporation – March 2018 Rev B01 Page 4
III.
1
Absolute Maximum Ratings
Parameter Symbol Min Typ Max Unit Ref.
Maximum Supply Voltage Vcc1,
VccTx,
VccRx
-0.5 3.6 V
Storage Temperature T
S
-40 85 °
C
Case Operating Temperature T
OP
0 70 °
C
Relative Humidity
RH
0
85
%
1
Damage Threshold, per Lane
DT
4
dBm
U
Notes
U
:
1. Non-condensing.
IV. Electrical Characteristics
(T
OP
= 0 to 70°
°°
°C, V
CC
= 3.1 to 3.47 Volts)
Parameter Symbol Min Typ Max Unit Ref.
Supply Voltage Vcc1,
VccTx,
VccRx
3.1 3.47 V
Supply Current
Icc
0.9
A
1
Link turn-on time
Transmit turn
-
on time
2000
m
s
2
Transmitter (per Lane)
Single
-
ended input voltage tolerance
VinT
-
0.3
4.0
V
Differential data input swing
Vin,pp
12
0
12
00
mVpp
3
Differential input
threshold
50
mV
AC common mode input voltage tolerance
(RMS)
15 mV
Differential input return loss
Per IEEE P802.3ba,
Section 86
A
.
4
.1.1
dB 4
J2 Jitter Tolerance
Jt2
0
.1
7
UI
J9 Jitter Tolerance
Jt9
0.29
UI
Data Dependent Pulse Width Shrinkage
DDPWS
0.07
UI
Eye mask coordinates {X1, X2
Y1, Y2}
0.11, 0.31
95, 350
UI
mV
5
Receiver (per Lane)
Single
-
ended output voltage
-
0.3
4.0
V
Differential data output swing Vout,pp
200
400
mVpp 6, 7
300
600
400
800
600
1200
A
C common mode out
put voltage
(RMS)
7.5
mV
Termination mism
atch at 1 MHx
5
%
Differential output return loss
Per IEEE P802.3ba,
Section 86
A
.
4
.
2
.1
dB 4
Common mode output return loss
Per IEEE P802.3ba,
Section 86
A
.
4.2
.2
dB 4
Output transition time, 20% to 80%
28
ps
J2 Jitter output
Jo
2
0.4
2
UI
J9
Jitter
output
J
o
9
0.6
5
UI
FTL4S1QE1C Product Specification
Finisar Corporation – March 2018 Rev B01 Page 5
Eye mask coordinates #1 {X1, X2
Y1, Y2}
0.29, 0.5
150
,
425
UI
mV
5
Power Supply Ripple Tolerance
PSR
50
mVpp
U
Notes
U
:
1. Will be <2.5W in link established mode. If the input optical signal is without data, the CDR will
keep searching and push the supply current over the maximum spec.
2. From power-on and end of any fault conditions.
3. After internal AC coupling. Self-biasing 100Ω differential input.
4. 10 MHz to 11.1 GHz range.
5. Hit ratio = 5 x 10E-5.
6. AC coupled with 100Ω differential output impedance.
7. Output voltage is settable in 4 discrete steps via I2C.
V. Optical Characteristics
(T
OP
= 0 to 70°
°°
°C, V
CC
= 3.1 to 3.47 Volts)
Per-channel optical characteristics vary over the 4 wavelengths. Below are the worst-case
Parameter Symbol Min Typ Max Unit Ref.
Transmitter
Signaling Speed per Lane
10.3125
GBd
1
Lane center wavelengths
850
880
910
940
nm
Spectral width @ 850
nm
SBW
0.53
Spectral width @ 880nm, 910nm,
940nm
SBW
0.59 nm
Total Average Launch Power
P
OUT
-
1.6
9.0
dBm
3
Average Launch Power per Lane
TXP
x
-
7.6
3.0
dBm
2,3
Transmit OMA per Lane
TxOMA
-
5.
3
3
dBm
2
Launch Power Tx OMA
-
TDP
-
6.
6
dBm
Transmitter and Dispersion Penalty
TDP
4.
9
dB
2
Optical Extinction Ratio
ER
3.0
dB
Average launch power of OFF
transmitter, per lane
-30 dBm
Relative Intensity Noise
RIN
-
128
dB/Hz
4
Optical Return Loss Tolerance
12
dB
Transmitter eye mask definition {X1,
X2, X3, Y1, Y2, Y3}
0.23, 0.34, 0.43, 0.27, 0.35, 0.4
Receiver
Signaling Speed per Lane
10.3125
GBd
5
Lane center wavelengths
850
880
910
940
nm
Average Receive Power per Lane
RXP
x
-
9.0
3.0
dBm
2,6
Receive Power (O
MA) per Lane
RxOMA
3
dBm
2
Receiver Sensitivity (OMA) per Lane
Rxsens
-
9.1
dBm
2
,7
Stressed Receiver Sensitivity (OMA)
per Lane @ 850nm
SRS -5.7 dBm 2
Stressed Receiver Sensitivity (OMA)
per Lane @ 880nm, 910nm, 940nm
SRS -4.4 dBm 2
FTL4S1QE1C Product Specification
Finisar Corporation – March 2018 Rev B01 Page 6
Return Loss
RL
12
dB
LOS De
-
Assert
LOS
D
-
13
dBm
LOS Assert
LOS
A
-
30
dBm
LOS Hysteresis
0.5
dB
U
Notes
U
:
1. Transmitter consists of 4 lasers operating at 10.3Gb/s each.
2. This value varies among the 4 channels. The value shown is for the worst-case channel.
3. Minimum value is informative.
4. Maximum value is informative. TDP guarantees Tx performance
5. Receiver consists of 4 photodetectors operating at 10.3 Gb/s each.
6. Minimum value is informative, equals min TxOMA with infinite ER and max channel insertion loss.
7. Maximum value is informative based on a theoretical perfect unstressed optical source
VI. Memory Map and Control Registers
Compatible with SFF-8636 (QSFP+)
2
. See Finisar Application Note AN-2104
6
for details
of the EEPROM memory map.
VII. Environmental Specifications
Finisar FTL4S1QE1C transceivers have an operating temperature range from 0°C to +70°C
case temperature.
Environmental Specifications Symbol
Min Typ Max Units Ref.
Case Operating Temperature
T
op
0
70
°C
Storage Temperature
T
sto
-
4
0
8
5
°C
VIII. Regulatory Compliance
Finisar FTL4S1QE1C transceivers are RoHS-6 compliant.
4
Copies of certificates are
available at Finisar Corporation upon request.
FTL4S1QE1C transceiver modules are Class 1M laser eye safety compliant per IEC 60825-
1.
FTL4S1QE1C Product Specification
Finisar Corporation – March 2018 Rev B01 Page 7
IX. Mechanical Specifications
The FTL4S1QE1C mechanical specifications are compliant to the QSFP+ MSA transceiver
module specifications.
Figure 2 – FTL4S1QE1C mechanical drawing
Figure 3 – FTL4S1QE1C production label
FTL4S1QE1C Product Specification
Finisar Corporation – March 2018 Rev B01 Page 8
X.
1
References
1. SFF-8436 – Specification for QSFP+ Copper and Optical Transceiver, Rev 4.8,
October 2013.
2. SFF-8636 – Common Management Interface, Rev 2.7, January, 2016.
3. IEEE 802.3ba – Annex 86A “Parallel Physical Interface (nPPI) for 40GBASE-SR4
and 40GBASE-LR4 (XLPPI) and 100GBASE-SR10 (CPPI)”
4. Directive 2011/65/EU of the European Council Parliament and of the Council, “on the
restriction of the use of certain hazardous substances in electrical and electronic
equipment,” June 8, 2011, which supercedes the previous RoHS Directive
2002/95/EC.
5. “Application Note AN-2038: Finisar Implementation of RoHS Compliant
Transceivers”, Finisar Corporation, January 21, 2005.
6. “Application Note AN-2104: QSFP+ 40G LR4 Transceiver EEPROM Mapping,”
Rev. A, Finisar Corporation, June, 2013.
XI.
B
For More Information
Finisar Corporation
1389 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. 1-408-548-1000
Fax 1-408-541-6138
HU
sales@finisar.com
U
HU
www.finisar.com
U
