F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 1
Product Specification
RoHS-6 Compliant
10Gb/s DWDM 80km Multi-Rate XFP Optical Transceiver
FTLX3811M3xx
PRODUCT FEATURES
• Supports 9.95Gb/s to 11.1Gb/s
bit rates
• Hot-pluggable XFP footprint
• Maximum link length of 80km
• RoHS-6 compliant (lead-free)
• Temperature-stabilized DWDM-rated
EML transmitter
• 100GHz ITU Grid, C-Band
• Duplex LC connector
• Power dissipation <3.5W
• Built-in digital diagnostic functions
• Temperature range: -5°C to 70°C
APPLICATIONS
• DWDM 10Gb/s SONET/SDH
ITU-T G.698.1 S-D100S1-2D
• DWDM 10Gb/s SONET/SDH
ITU-T G.709
• DWDM 80km 10G Ethernet
• DWDM 80km 10G Fibre Channel
• DWDM 80km 10G Ethernet with FEC
Finisar’s 80km FTLX3811M3xx Small Form Factor 10Gb/s (XFP) transceivers comply with the
current XFP Multi-Source Agreement (MSA) Specification1. They exceed the requirements for
DWDM 10Gb/s SONET/SDH interfaces per ITU-T G.698.1 S-D100S1-2D, and support DWDM
10-Gigabit Ethernet, 10-Gigabit Fibre Channel, and 10-Gigabit Ethernet with FEC applications.
Digital diagnostics functions are available via a 2-wire serial interface, as specified in the XFP
MSA. The transceiver is RoHS compliant and lead free per Directive 2002/95/EC3, and Finisar
Application Note AN-20384.
PRODUCT SELECTION
FTLX3811M3xx
xx: 100GHz ITU-T chan nel (see next pa ge)
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 2
Channel # Product Code Frequency (THz) Center Wavelength (nm)
17* FTLX3811M317 191.7 1563.86
18* FTLX3811M318 191.8 1563.05
19* FTLX3811M319 191.9 1562.23
20 FTLX3811M320 192.0 1561.42
21 FTLX3811M321 192.1 1560.61
22 FTLX3811M322 192.2 1559.79
23 FTLX3811M323 192.3 1558.98
24 FTLX3811M324 192.4 1558.17
25 FTLX3811M325 192.5 1557.36
26 FTLX3811M326 192.6 1556.55
27 FTLX3811M327 192.7 1555.75
28 FTLX3811M328 192.8 1554.94
29 FTLX3811M329 192.9 1554.13
30 FTLX3811M330 193.0 1553.33
31 FTLX3811M331 193.1 1552.52
32 FTLX3811M332 193.2 1551.72
33 FTLX3811M333 193.3 1550.92
34 FTLX3811M334 193.4 1550.12
35 FTLX3811M335 193.5 1549.32
36 FTLX3811M336 193.6 1548.51
37 FTLX3811M337 193.7 1547.72
38 FTLX3811M338 193.8 1546.92
39 FTLX3811M339 193.9 1546.12
40 FTLX3811M340 194.0 1545.32
41 FTLX3811M341 194.1 1544.53
42 FTLX3811M342 194.2 1543.73
43 FTLX3811M343 194.3 1542.94
44 FTLX3811M344 194.4 1542.14
45 FTLX3811M345 194.5 1541.35
46 FTLX3811M346 194.6 1540.56
47 FTLX3811M347 194.7 1539.77
48 FTLX3811M348 194.8 1538.98
49 FTLX3811M349 194.9 1538.19
50 FTLX3811M350 195.0 1537.40
51 FTLX3811M351 195.1 1536.61
52 FTLX3811M352 195.2 1535.82
53 FTLX3811M353 195.3 1535.04
54 FTLX3811M354 195.4 1534.25
55 FTLX3811M355 195.5 1533.47
56 FTLX3811M356 195.6 1532.68
57 FTLX3811M357 195.7 1531.90
58 FTLX3811M358 195.8 1531.12
59 FTLX3811M359 195.9 1530.33
60 FTLX3811M360 196.0 1529.55
61* FTLX3811M361 196.1 1528.77
*This channel is supported with limited availability -- Please contact Finisar for further details.
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 3
I. Pin Descriptions
Pin Logic Symbol Name/Description Ref.
1 GND Module Ground 1
2 VEE5 Optional –5.2 Power Supply – Not required
3 LVTTL-I Mod-Desel Module De-select; When held low allows the module to
respond to 2-wire serial interface commands
4 LVTTL-O
Interrupt Interrupt (bar); Indicates presence of an important condition
which can be read over the serial 2-wire interface 2
5 LVTTL-I TX_DIS Transmitter Disable; Transmitter laser source turned off
6 VCC5 +5 Power Supply
7 GND Module Ground 1
8 VCC3 +3.3V Power Supply
9 VCC3 +3.3V Power Supply
10 LVTTL-I SCL Serial 2-wire interface clock 2
11 LVTTL-
I/O SDA Serial 2-wire interface data line 2
12 LVTTL-O Mod_Abs Module Absent; Indicates module is not present. Grounded
in the module. 2
13 LVTTL-O Mod_NR Module Not Ready; Finisar defines it as a logical OR
between RX_LOS and Loss of Lock in TX/RX. 2
14 LVTTL-O RX_LOS Receiver Loss of Signal indicator 2
15 GND Module Ground 1
16 GND Module Ground 1
17 CML-O RD- Receiver inverted data output
18 CML-O RD+ Receiver non-inverted data output
19 GND Module Ground 1
20 VCC2 +1.8V Power Supply
21 LVTTL-I P_Down/RST Power Down; When high, places the module in the low
power stand-by mode and on the falling edge of P_Down
initiates a module reset
Reset; The falling edge initiates a complete reset of the
module including the 2-wire serial interface, equivalent to a
power cycle.
22 VCC2 +1.8V Power Supply
23 GND Module Ground 1
24 PECL-I RefCLK+ Reference Clock non-inverted input, AC coupled on the
host board – Not required
25 PECL-I RefCLK- Reference Clock inverted input, AC coupled on the host
board – Not required
26 GND Module Ground 1
27 GND Module Ground 1
28 CML-I TD- Transmitter inverted data input
29 CML-I TD+ Transmitter non-inverted data input
30 GND Module Ground 1
Notes:
1. Module circuit ground is isolated from module chassis ground within the module.
2. Open coll ector; should be pul l e d up wit h 4. 7 k – 10 k ohms on host board t o a voltage between 3.15V
and 3.6V.
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 4
Diagram of Host Board Connector Block Pin Numbers and Names
II. Absolute Maximum Ratings
Parameter Symbol Min Typ Max Unit Ref.
Maximum Supply Voltage #1 Vcc3 -0.5 4.0 V
Maximum Supply Voltage #2 Vcc5 -0.5 6.0 V
Maximum Supply Voltage #3 Vcc5 -0.5 2.0 V
Sto rage Temperatu re TS -40 85
°C
Case Operating Temperature TOP -5 70
°C
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 5
III. Electrical Characteristics (TOP = -5 to 70 °C, VCC5 = 4.75 to 5.25 Volts)
Parameter Symbol Min Typ Max Unit Ref.
Supply Volta g e #1 Vcc5 4.75 5.25 V
Supply Volta g e #2 Vcc3 3.13 3.46 V
Supply Volta g e #3 Vcc2 1.71 1.89 V
Supply Current – Vcc5 supply Icc5 350 mA
Supply Current – Vcc3 supply Icc3 400 mA
Supply Current – Vcc2 supply Icc2 750 mA
Module total power P 3.5 W 1
Transmitter
Input differential impedance Rin 100 Ω 2
Differential data input swing Vin,pp 120 820 mV
Transmit Disable Voltage VD2.0 Vcc V 3
Transmit Enable Voltage VEN GND GND+ 0.8 V
Transmit Disable Assert Time 10 us
Receiver
Differential data output swing Vout,pp 340 650 850 mV 4
Data output rise time t
r
38 ps 5
Data output fall time tf 38 ps 5
LOS Fault VLOS faul
t
Vcc – 0.5 VccHOST V 6
LOS Normal VLOS nor
m
GND GND+0.5 V 6
Power Supply Rejection PSR See Note 6 below 7
Reference Clock
Clock differential input impedance Rclkin 100 Ω
Reference Clock frequency f0 Baud/64 MHz
Differential clock input swing Vclkin,pp 640 1600 mV
Clock output rise/fall time trf 200 1250 ps 5
Reference clock frequency tolerance Df -100 +100 PPM
Notes:
1. Maximum total power value is specified across the full temperature and voltage range.
2. After internal AC coupling.
3. Or open circuit.
4. Into 100 ohms differential termination.
5. 20 – 80 %
6. Loss Of Signal is open collector to be pulled up with a 4.7k – 10kohm resistor to 3.15 – 3.6V. Logic 0
indicates normal operation; logic 1 indicates no signal detected.
7. Per Section 2.7.1. in the XFP MSA Specification1.
IV. Optical Characteristics (EOL, TOP = -5 to 70°C, VCC5 = 4.75 to 5.25 Volts)
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 6
Please note that the Transmitter of the FTLX3811M3xx becom es operational within 60
seconds of power-up. This is due to the time required for the EML to reach its optimum
operating temperature.
Parameter Symbol Min Typ Max Unit Ref.
Transmitter
Output Opt . Pwr: 9/ 1 25 SMF POUT -1 +3 dBm
Optical Extinction Ratio ER 8.2 dB
Center Wavelength Spacing 100 GHz 1
Transmitter Center Wavelength –
End Of Life
λ
c X-100 X X+100 pm 2
Transmitter Center Wavelength –
Beginning Of Li fe
λ
c X-25 X X+25 pm 2
Sidemode Supression ratio SSRmin 30 dB
Tx Jitter Generation (peak-to-peak) Txj 0.1 UI 3
Tx Jitter Generation (RMS) TxjRMS 0.01 UI 4
Relative Intensity Noise RIN -130 dB/Hz
Receiver
Receiver Sensitivity @ 9.95Gb/s RSENS1 -24 dBm 5,6
Receiver Sensitivity @ 11.1Gb/s RSENS2 -22 dBm 5
Maximum Input Power PMAX -7 dBm
Optical Center Wavelength
λ
C
1270 1600 nm
Receiver Reflectance Rrx -27 dB
Path penalty at 1450 ps/nm @
10.7Gb/s DP1 2.5 dB 7,8
Path penalty at 1300 ps/nm @
11.1Gb/s DP2 2.5 dB 8
LOS De-Assert LOSD -30 dBm
LOS Assert LOSA-37 dBm
LOS Hysteresis 0.5 dB
Notes:
1. Corresponds to approximately 0.8 nm.
2. X = Specified ITU Grid wavelength.
3. Measured with a host jitter of 50 mUI peak-to-peak.
4. Measured with a host jitter of 7 mUI RMS.
5. Measured at 1528-1600nm with worst ER; BER<10-12; PRBS31.
6. Equivalent to –22.1 dBm OMA at ER = 9 dB.
7. Dispersio n penalty should be m easured in loopback on a 1450 ps/ nm fiber link.
8. Measured at BER<10-6; PRBS31.
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 7
V. General Specifications
Parameter Symbol Min Typ Max Units Ref.
Bit Rate BR 9.95 11.1 Gb/s 1
Bit Error Ratio BER 10-12 2
Max. Supported Link Length LMAX 80 km 1
Notes:
1. SONET OC-192, 10G Ethernet, 10G Fibre Channel, SONET OC-192 with FEC, 10G Ethernet with
FEC.
2. Tested with a 231 – 1 PRBS @ 9.95Gb/s and 10.3Gb/s
VI. Environmental Specifications
Finisar XFP transceivers have an operating temperature range from -5°C to +70°C case
temperature.
Parameter Symbol Min Typ Max Units Ref.
Case Operating Temperature Top -5 70 °C
Sto rage Temperatu re Tsto -40 85 °C
VII. Regulatory Compliance
Finisar XFP transceivers are Class 1 Laser Products. They are certified per the following
standards:
Feature Agency Standard Certificate
Number
Laser Eye
Safety FDA/CDRH CDRH 21 CFR 1040 and Laser Notice 50 9210176-77
Laser Eye
Safety TÜV EN 60825-1: 1994+A11:1996+A2:2001
IEC 60825-1: 1993+A1:1997+A2:2001
IEC 60825-2: 2000, Edition 2
72101686
Electrical
Safety TÜV EN 60950 72101686
Electrical
Safety
UL/CSA
CLASS 3862.07
CLASS 3862.87 2283290
Copies of the referenced certificates are available at Finisar Corporation upon request.
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 8
VIII. Digital Diagnostics Functions
As defined by the XFP MSA1, Finisar XFP transceivers provide digital diagnostic
functions via a 2-wire serial interface, which allows real-time access to the following
operating parameters:
• Transceiver temperature
• Laser bias current
• Transmitted optical power
• Received optical power
• Transceiver supply voltage
It also provides a sophisticated system of alarm and warning flags, which may be used to
alert end-users when particular operating parameters are outside of a factory-set normal
range.
The operating and diagnostics information is monitored and reported by a Digital
Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed
through the 2-wire serial interface. When the serial protocol is activated, the serial clock
signal (SCL pin) is generated by the host. The positive edge clocks data into the XFP
transceiver into those segments of its memory map that are not write-protected. The
negative edge clocks data from the XFP transceiver. The serial data signal (SDA pin) is
bi-directional for serial data transfer. The host uses SDA in conjunction with SCL to
mark the start and end of serial protocol activation. The memories are organized as a
series of 8-bit data words that can be addressed individually or sequentially. The 2-wire
serial interface provides sequential or random access to the 8 bit param eters, addressed
from 000h to the maximum address of the memory.
For more detailed information, including memory map definitions, please see the XFP
MSA documentation1.
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 9
IX. Mechanical Specifications
Finisar’s XFP transceivers are compliant with the dimensions defined by the XFP Multi-
Sourcing Agreement (MSA).
XFP Transceiver (dimensions are in mm)
77.95
18.3522.15
8.50
13.30
1.95
39.00
16.00
R1.00
20.85
LATCHED
UNLATCHED
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 10
X. PCB Layout and Bezel Recommendations
XFP Host Board Mechanical Layout (dimensions are in mm)
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 11
XFP Detail Host Board M echa n ical Layout (dimensions are in mm)
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 12
XFP Recommended Bezel Design (dimensions are in mm)
FTLX3811M3xx DWDM XFP Product Specification – January 2011 F i n i s a r
© Finisar Corporation 11-January-2011 Rev C1 Page 13
XI. References
1. 10 Gigabit Small Form Factor Pluggable Module (XFP) Multi-Source Agreement
(MSA), Rev 4.5 – August 2005. Documentation is currently available at
http://www.xfpmsa.org/
2. Application Note AN-2035: “Digital Diagnostic Monitoring Interface for XFP
Optical Transceivers” – Finisar Corporation, December 2003
3. Directive 2002/95/EC of the European Council Parliament and of the Council,
“on the restriction of the use of certain hazardous substances in electrical and
electronic equipment”. January 27, 2003.
4. “Application Note AN-2038: Finisar Implementation Of RoHS Compliant
Transceivers”, Finisar Corporation, January 21, 2005.
XII. Revision History
Revision Date Description
A 4/12/2006
• Document created.
A1 4/21/2006
• Updated photo.
• Removed Finisar Confidential.
• Updated Finisar Address.
A2 5/26/2006
• Change BOL wavelength specification.
B 10/25/2006
• Added Safety Certificate numbers.
• Document released.
B1 12/18/2006
• Modified Min LOS Assert to -37dBm and Max LOS De-Assert to -30dBm
• Modified path penal t y to 2.5 d B at BER< 10-6 @ 10.7 Gb/s and 11.1Gb/s
B2 9/28/2007
• Updated note on channels.
C1 1/11/2011
• Updated Regulatory Compliance Information
XII. For More Information
Finisar Corporation
1389 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. 1-408-548-1000
Fax 1-408-541-6138
sales@finisar.com
www.finisar.com
