FTLX3812S341 - Finisar Corporation

F i n i s a r

Product Specification

RoHS-6 Compliant

SONET/SDH 10Gb/s DWDM XFP Optical Transceiver

FTLX3812S3xx

PRODUCT FEATURES

• Supports 9.95Gb/s and 10.7Gb/s

• Hot-pluggable XFP footprint

• Temperature-stabilized DWDM

EML transmitter

• RoHS-6 Compliant (lead-free)

• 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

• Amplified DWDM 10G SONET/SDH

Finisar’s FTLX3812S3xx Small Form Factor 10Gb/s (XFP) transceiver complies with the

current XFP Multi-Source Agreement (MSA) Specification1. It supports amplified

DWDM 10Gb/s SONET/SDH applications. Digital diagnostics functions are available

via a 2-wire serial interface, as specified in the XFP MSA. For a multiprotocol version

that supports 10G Ethernet, please see FTLX3812M3xx. The transceiver is RoHS

compliant and lead free per Directive 2002/95/EC3, and Finisar Application Note AN-

20384.

PRODUCT SELECTION

FTLX3812S3xx

xx: 100GHz ITU-T channel

(see next page)

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

Channel # Product Code Frequency (THz) Center Wavelength (nm)

17* FTLX3812S317 191.7 1563.86

18* FTLX3812S318 191.8 1563.05

19* FTLX3812S319 191.9 1562.23

20* FTLX3812S320 192.0 1561.42

21 FTLX3812S321 192.1 1560.61

22 FTLX3812S322 192.2 1559.79

23 FTLX3812S323 192.3 1558.98

24 FTLX3812S324 192.4 1558.17

25 FTLX3812S325 192.5 1557.36

26 FTLX3812S326 192.6 1556.55

27 FTLX3812S327 192.7 1555.75

28 FTLX3812S328 192.8 1554.94

29 FTLX3812S329 192.9 1554.13

30 FTLX3812S330 193.0 1553.33

31 FTLX3812S331 193.1 1552.52

32 FTLX3812S332 193.2 1551.72

33 FTLX3812S333 193.3 1550.92

34 FTLX3812S334 193.4 1550.12

35 FTLX3812S335 193.5 1549.32

36 FTLX3812S336 193.6 1548.51

37 FTLX3812S337 193.7 1547.72

38 FTLX3812S338 193.8 1546.92

39 FTLX3812S339 193.9 1546.12

40 FTLX3812S340 194.0 1545.32

41 FTLX3812S341 194.1 1544.53

42 FTLX3812S342 194.2 1543.73

43 FTLX3812S343 194.3 1542.94

44 FTLX3812S344 194.4 1542.14

45 FTLX3812S345 194.5 1541.35

46 FTLX3812S346 194.6 1540.56

47 FTLX3812S347 194.7 1539.77

48 FTLX3812S348 194.8 1538.98

49 FTLX3812S349 194.9 1538.19

50 FTLX3812S350 195.0 1537.40

51 FTLX3812S351 195.1 1536.61

52 FTLX3812S352 195.2 1535.82

53 FTLX3812S353 195.3 1535.04

54 FTLX3812S354 195.4 1534.25

55 FTLX3812S355 195.5 1533.47

56 FTLX3812S356 195.6 1532.68

57 FTLX3812S357 195.7 1531.90

58 FTLX3812S358 195.8 1531.12

59 FTLX3812S359 195.9 1530.33

60* FTLX3812S360 196.0 1529.55

61* FTLX3812S361 196.1 1528.77

*This channel is supported with limited availability -- Please contact Finisar for further details.

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

I. Pin Descriptions

Pin Logic Symbol Name/Description Ref.

1 GND Module Ground 1

2 VEE5 Optional –5.2 Po wer Su p pl y – 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

Power Down; When high, places the module in the low

power stand-by mod e and on the falling edge of P_Down

initiates a module reset

21 LVTTL-I P_Down/RST

Reset; The falling edge initiates a co mplete 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 pull e d up wit h 4. 7k – 10kohms on host board to a voltage bet ween 3.15V

and 3.6V.

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

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

Storage Temperature TS-40 85

°C

Case Operating Temperature TOP -5 70

°C

Receiver Damage Threshold PRdmg +1 dBm

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

III. Electrical Characteristics (TOP = -5 to 70 °C, VCC5 = 4.75 to 5.25 Volts)

Parameter Symbol Min Typ Max Unit Ref.

Supply Volt ag e #1 Vcc5 4.75 5.25 V

Supply Volt ag e #2 Vcc3 3.13 3.46 V

Supply Volt ag 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 tr 38 ps 5

Data output fall time tf 38 ps 5

LOS Fault VLOS fault Vcc – 0.5 VccHOST V 6

LOS Normal VLOS norm 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.

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

IV. Optical Characteristics (EOL, TOP = -5 to 70°C, VCC5 = 4.75 to 5.25 Volts)

Please note that the Transmitter of the FTLX3811S3xx becomes operational within 60

seconds of power-up. This is due to the time required for the EML to reach its optimum

operating temperature.

Transmitter

Parameter Symbol Min Typ Max Unit Ref.

Output Opt . Pwr: 9/125 SMF POUT -3 +3 dBm

Optical Extinction Ratio ER 8.2 dB

Center Wavelength Spacing 100 GHz 1

Transmitter Center Wavelength –

End Of Life λc X-100 X X+100 pm 2

Transmitter Center Wavelength –

Beginning Of Li fe λc X-25 X X+25 pm 2

Sidemode Suppression 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

Maximum Input Power PMAX -7 dBm

Optical Center Wavelength λC1270 1600 nm

Receiver Reflectance Rrx -27 dB

LOS De-Assert LOSD -30 dBm

LOS Assert LOSA-35 dBm

LOS Hysteresis 0.5 dB

Receiver Sensitivity 5

Data rate

(Gb/s) BER Dispersion (ps/nm)

Sensitivity back-to-

b

ack at OSNR>30dB

(dBm)

Power Penalty

at OSNR>30dB

(dB)

Threshold

Adjustm.

Required

9.95 1e-12 -500 to 1450 -23 3 No

10.7 1e-4 -500 to 1300 -27 3 Yes

OSNR Performance 6

Data rate

(Gb/s) BER Dispersion (ps/nm)

Min OSNR Back-to-

back at Power: -7 to -

18dBm (dB)

Max OSNR Penalty

at Power:-7 to -18dBm

(dB)

Threshold

Adjustm.

Required

9.95 1e-12 -500 to 1450 24 4 No

10.7 1e-4 -500 to 1300 16 4 Yes

Notes:

1. Corresponds to approximately 0.8 nm.

2. X = Specified ITU Grid wavelength. Wavelength stability is achieved within 60 seconds of power up.

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. All OSNR measurements are performed with 0.1nm resolution.

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

V. General Specifications

Parameter Symbol Min Typ Max Units Ref.

Bit Rate BR 9.95 10.7 Gb/s 1

Max. Supported Link Length LMAX 80 km

Notes:

1. Amplified SONET OC-1 92, SO NET OC- 1 92 with FEC.

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

Storage Temperature 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

R72052602

Electrical

Safety TÜV EN 60950 R72052602

Electrical

Safety

UL/CSA

CLASS 3862.07

CLASS 3862.87 1439230

Copies of the referenced certificates are available at Finisar Corporation upon request.

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

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

• TEC Temperature

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 parameters, addressed

from 000h to the maximum address of the memory.

For more detailed information, including memory map definitions, please see the XFP

MSA documentation1.

Receiver Threshold Adjustment

The FTLX3812S3xx provides access to receiver decision threshold adjustment via the

2-wire serial interface, in order to improve receiver OSNR performance based on specific

link conditions. It is implemented as follows:

• Rx Threshold of XFP transceivers will be factory-set for optimized performance

in non-FEC applications. This will be the default value during both cold start

(power-up) and warm start (module reset).

• The transceiver supports adjustment of Rx Threshold value by the host through

register 76d, table 01h. This is intended to be used in FEC applications.

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

• Register 76d, table 01h is a volatile memory. Therefore if the transceiver is

power-cycled, the register starts up with a value of 00h which corresponds to the

default Rx Threshold value.

• The threshold adjustment input value is 2’s complement 7 bit value (-128 to

+127), with 0 corresponding to default Rx threshold value. Full range of

adjustment provides at least a ±10% change in Rx threshold from the default

value.

IX. Mechanical Specifications

Finisar’s XFP transceivers are compliant with the dimensions defined by the XFP Multi-

Sourcing Agreement (MSA).

77.95

18.3522.15

8.50

13.30

1.95

39.00

16.00

R1.00

20.85

LATCHED

UNLATCHED

XFP Transceiver (dimensions are in mm)

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

X. PCB Layout and Bezel Recommendations

XFP Host Board Mechanical Layout (dimension s are in mm)

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

XFP Detail Host Board Mechan ical Layout (dimensions are in mm)

XFP Recommended Bezel Design (dimensions are in mm)

FTLX3812S3xx Amplified DWDM XFP Product Specification – September 2007 F i n i s a r

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 4/12/2006

• Updated Finisar Address

A2 5/22/2006

• Update BOL wavelength tolerance specification.

B 10/25/2006

• Added Safety Certificate numbers.

• Document released.

B1 9/28/2007

• Updated note on channe ls.

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