F i n i s a r
Finisar Corporation Page 1
Rev D1, Aug.2010
Product Specification
Long-Reach DWDM SFP Transceiver
FWLF1634RLxx
PRODUCT FEATURES
Up to 4.25 Gb/s bi-directional links
Hot-pluggable SFP footprint
Temperature-stabilized DWDM-
rated DFB laser transmitter
100GHz ITU Grid, C-Band
Low dispersion DFB laser
Extended operating range: -5°C to
70°C case temperature
Wavelength controlled within 0.1
nm over life and temperature
Extended link budget with APD
receiver technology
4x FC compliant
1x/2x, GbE compliant*
OC-48 LR-2 compliant*
APPLICATIONS
Amplified DWDM networks
Bandwidth aggregation
Ring topologies with fixed and
reconfigurable OADMs
Finisar’s Dense Wavelength-Division Multiplexing (DWDM) transceivers offer DWDM
transport with dramatically lower power and cost in a standard pluggable Small Form
Factor Pluggable (SFP) package1. The FWLF1634R is designed expressly for service
providers deploying DWDM networking equipment in metropolitan access and core
networks.
Basic digital diagnostic features for the FWLF1634R are implemented as described in
Finisar Application Note AN-2030, “Digital Diagnostic Monitoring Interface for Optical
Transceivers”4. Enhanced diagnostic features are available as described in the DWDM
SFP MSA6.
(*when ordered with rate selection option, and used in low rate mode)
F i n i s a r
Finisar Corporation Page 2
Rev D1, Aug.2010
PRODUCT SELECTION
FWLF1634Ryxx
y L Non Rate Selectable - 4x Fibre Channel
xx DWDM Wavelength (see table below)
Product Code
Frequency (THz)
Center Wavelength (nm)
FWLF1634RL17
191.7
1563.86
FWLF1634RL18
191.8
1563.05
FWLF1634RL19
191.9
1562.23
FWLF1634RL20
192.0
1561.42
FWLF1634RL21
192.1
1560.61
FWLF1634RL22
192.2
1559.79
FWLF1634RL23
192.3
1558.98
FWLF1634RL24
192.4
1558.17
FWLF1634RL25
192.5
1557.36
FWLF1634RL26
192.6
1556.55
FWLF1634RL27
192.7
1555.75
FWLF1634RL28
192.8
1554.94
FWLF1634RL29
192.9
1554.13
FWLF1634RL30
193.0
1553.33
FWLF1634RL31
193.1
1552.52
FWLF1634RL32
193.2
1551.72
FWLF1634RL33
193.3
1550.92
FWLF1634RL34
193.4
1550.12
FWLF1634RL35
193.5
1549.32
FWLF1634RL36
193.6
1548.51
FWLF1634RL37
193.7
1547.72
FWLF1634RL38
193.8
1546.92
FWLF1634RL39
193.9
1546.12
FWLF1634RL40
194.0
1545.32
FWLF1634RL41
194.1
1544.53
FWLF1634RL42
194.2
1543.73
FWLF1634RL43
194.3
1542.94
FWLF1634RL44
194.4
1542.14
FWLF1634RL45
194.5
1541.35
FWLF1634RL46
194.6
1540.56
FWLF1634RL47
194.7
1539.77
FWLF1634RL48
194.8
1538.98
FWLF1634RL49
194.9
1538.19
FWLF1634RL50
195.0
1537.40
FWLF1634RL51
195.1
1536.61
FWLF1634RL52
195.2
1535.82
FWLF1634RL53
195.3
1535.04
FWLF1634RL54
195.4
1534.25
FWLF1634RL55
195.5
1533.47
FWLF1634RL56
195.6
1532.68
FWLF1634RL57
195.7
1531.90
FWLF1634RL58
195.8
1531.12
FWLF1634RL59
195.9
1530.33
FWLF1634RL60
196.0
1529.55
FWLF1634RL61
196.1
1528.77
FWLF1634RLxx DWDM SFP Product Specification – August 2010 F i n i s a r
Finisar Corporation Page 3
Rev D1, Aug.2010
I. Pin Descriptions
Pin
Symbol
Name/Description
Ref.
1
VEET
Transmitter Ground (Common with Receiver Ground)
1
2
TFAULT
Transmitter Fault
3
TDIS
Transmitter Disable. Laser output disabled on high or open
2
4
MOD_DEF(2)
Module Definition 2. Data line for Serial ID
3
5
MOD_DEF(1)
Module Definition 1. Clock line for Serial ID
3
6
MOD_DEF(0)
Module Definition 0. Grounded within the module
3
7
Rate Select
No connection required
4
8
LOS
Loss of Signal indication. Logic 0 indicates normal operation
5
9
VEER
Receiver Ground (Common with Transmitter Ground)
1
10
VEER
Receiver Ground (Common with Transmitter Ground)
1
11
VEER
Receiver Ground (Common with Transmitter Ground)
1
12
RD-
Receiver Inverted DATA out. AC Coupled
13
RD+
Receiver Non-inverted DATA out. AC Coupled
14
VEER
Receiver Ground (Common with Transmitter Ground)
1
15
VCCR
Receiver Power Supply
16
VCCT
Transmitter Power Supply
17
VEET
Transmitter Ground (Common with Receiver Ground)
1
18
TD+
Transmitter Non-Inverted DATA in. 100 ohm termination between TD+
and TD-, AC Coupled thereafter
19
TD-
Transmitter Inverted DATA in. See TD+
20
VEET
Transmitter Ground (Common with Receiver Ground)
1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
3. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and 5.5V.
MOD_DEF(0) pulls line low to indicate module is plugged in.
4. Receiver achieves multi-rate operation without active control.
5. LOS is open collector output. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and
5.5V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
Diagram of Host Board Connector Block Pin Numbers and Names
FWLF1634RLxx DWDM SFP Product Specification – August 2010 F i n i s a r
Finisar Corporation Page 4
Rev D1, Aug.2010
II. Absolute Maximum Ratings
Parameter
Symbol
Min
Typ
Max
Unit
Maximum Supply Voltage
Vcc
-0.5
4.7
V
Storage Temperature
TS
-10
85
C
Case Operating Temperature
TOP
-5
70
C
III. Electrical Characteristics (TOP = -5 to 70 C, VCC = 3.13 to 3.50 Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Supply Voltage
Vcc
3.13
3.30
3.50
V
Supply Current
Icc
325
mA
BOL
Inrush Current
Isurge
Icc+30
mA
BOL
Maximum Power
Pmax
1.25
W
TRANSMITTER
Input differential impedance
Rin
100
1
Single ended data input swing
Vin,pp
250
1200
mV
Transmit Disable Voltage
VD
Vcc – 1.3
Vcc
V
Transmit Enable Voltage
VEN
Vee
Vee+ 0.8
V
2
RECEIVER
Single ended data output swing
Vout,pp
175
1000
mV
3
Data output rise time
tr
120
ps
4
Data output fall time
tf
120
ps
4
LOS Fault
VLOS fault
Vcc – 0.5
VccHOST
V
5
LOS Normal
VLOS norm
Vee
Vee+0.5
V
5
Power Supply Rejection
PSR
100
mVpp
6
Notes:
1. Connected directly to TX data input pins. AC coupled thereafter.
2. Or open circuit.
3. Into 100 ohms differential termination.
4. 20 – 80 %
5. Loss of signal (LOS) is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
6. Receiver sensitivity is compliant with power supply sinusoidal modulation of 20 Hz to 1.5 MHz up to specified
value applied through the recommended power supply filtering network.
FWLF1634RLxx DWDM SFP Product Specification – August 2010 F i n i s a r
Finisar Corporation Page 5
Rev D1, Aug.2010
IV. Low Speed Signals
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
RX_LOS Assert Level
-42
-36
dBm
RX_LOS De-assert Level
-34
-28
dBm
RX_LOS Hysteresis
0.5
2
dB
RX_LOS Assert Delay
t_loss_on
100
sec
From detection of loss of signal
to assertion of RX_LOS
RX_LOS Negate Delay
t_loss_off
100
sec
From detection of presence of
signal to negation of RX_LOS
TX_DISABLE Assert Time
t_off
10
sec
Rising edge of TX_DISABLE to
fall of output signal below 10%
of nominal
TX_DISABLE Negate Time
t_on
1000
sec
Falling edge of TX_DISABLE
to rise of output signal above
90% of nominal. Time
indicated is under steady-state
temperature conditions.
TX_DISABLE Reset Time
t_reset
10
sec
TX_DISABLE HIGH before
TX_DISABLE set LOW
TX_FAULT Assert
-0.2
+0.2
nm
TX_Fault will assert before the
device is outside of specified
wavelength range
FWLF1634RLxx DWDM SFP Product Specification – August 2010 F i n i s a r
Finisar Corporation Page 6
Rev D1, Aug.2010
V. Optical Parameters1
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
TRANSMITTER CHARACTERISTICS
Center Wavelength Spacing
100
GHz
Corresponds to approximately 0.8 nm
Modulated Spectral Width
0.2
0.3
nm
Full width, -20dB from max.
See note 3
Center Wavelength – End of Life
c
X - 100
X
X + 100
pm
X = specified center wavelength
Center Wavelength – BOL Offset
c
Y - 25
Y
Y + 25
pm
Y = specified center wavelength
Side Mode Suppression Ratio
SMSR
30
dB
Modulated
Optical Rise/Fall Time
tr / tf
120
ps
Unfiltered, 80% -20%
Optical Output Power
Pout
+2
+5
dBm
Avg. power coupled into SMF-28; see
note 4
Extinction Ratio, (<=4.25G)
OMI
6.0
dB
EOL
Extinction Ratio, SONET
OMI
8.2
dB
EOL, Rate Select Option Only
Eye Opening
10
%
Jitter Generation, SONET
75
mUI
Parameters per GR-2532
section 5.6 for OC-48 B
Total Jitter
59.8
ps
(p-to-p)
Deterministic Jitter
28.2
ps
(p-to-p)
Reflectance
RTX
-27
dB
Tolerable Back Reflection
BR
-14
dB
See note 5
Relative Intensity Noise
RIN
-120
dB/Hz
Dispersion Power Penalty
DPP
3.0
dB
At 1600 ps/nm. See Note 6
RECEIVER CHARACTERISTICS
Optical Input Wavelength
Pin
1520
1570
nm
Jitter Generation , SONET
75
mUI
Parameters per GR-2532
section 5.6 for OC-48 B
Total Jitter
61.8
ps
(p-to-p)
Deterministic Jitter
25.9
ps
(p-to-p)
Optical Input Power
(BER < 10 -12)
Pin
-28
-9
dBm
2.5 Gb/s w/ PRBS 2 23 -1
EOL, & rate select low option
implemented
Optical Input Power
(BER < 10 -12)
Pin
-23
-9
dBm
4.25 Gb/s w/ PRBS 2 7 -1
EOL
Optical Input Power –
Receiver Damage Threshold
+6
dBm
Receiver Reflectance
RRX
-27
dB
Min-Required OSNR 0ps/nm
OSNRbb
22
dB
See Note 7
Min-Required OSNR 1600ps/nm
OSNRt
25
dB
See Note 7
Notes:
1. Parameters are specified over temperature and voltage, at end of life, and for non-rate select option unless otherwise noted.
2. All parameters are measured on a Finisar SFP Evaluation Card unless otherwise noted.
3. For accurate 20 measurements, an OSA with a resolution band width of ≤ 20pm is recommended.
4. Output power of +3 to +7dBm is also supported; please contact your local Finisar sales representatives for details.
5. Tolerable back reflection is the max back reflection level at which the power penalty will be <1dB. Power penalty is measured
over fiber (1600ps/nm) at BER = 10-12 with OSNR set at 24dB.
6. Dispersion power penalty is measured in loop back with OSNR set to 30 dB. Data rate and pattern used same as specified for
Optical Input Power. Dispersion power penalty is the difference in Rx power at a BER of 10-12 for 0ps/nm & 1600ps/nm
7. Rx power set between -9dBm and -18dBm. Data rate and pattern used same as specified for Optical Input Power. Measured as
the Minimum OSNR to achieve a BER of 10-12 . Optical filter bandwidth of 0.1nm is used in OSNR measurement.
FWLF1634RLxx DWDM SFP Product Specification – August 2010 F i n i s a r
Finisar Corporation Page 7
Rev D1, Aug.2010
VI. Wavelength Stabilization
The laser transmitter will not be turned on until its temperature is adjusted to ensure
operation within the specified channel (X +/- 300pm). This temperature stabilization time is
dependent on the ambient temperature conditions, but will typically occur within 5 seconds
of powering the device. The module will transmit within the specified wavelength tolerance
(X +/- 100pm) within 10 ms of transmitter operation.
VII. General Specifications
VIII. Environmental Specifications
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
Operating Temp
Top
-5
70
°C
Case temperature measured on top-side of
device
Storage Temp
Tsto
-40
85
°C
Ambient temperature
Eye Safety
CDRH and IEC-825 Class 1 Laser
Product. See Note 1
Note 1: Complies with FDA performance standards for laser products except for deviations pursuant to Laser Notice No.
50, dated July 26, 2001.
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
Data Rate
BR
0.155
4.25
Gb/sec
SONET OC-3/12/48 compatible
Total Link Budget
26
30
dB
@ 4.25 Gb/s, BER <10-12 w/
PRBS 2 7-1. See Note 1
Total Link Budget
31
34
dB
@ 2.5 Gb/s, BER <10-12 w/ PRBS
2 23-1. See Note 1
Note 1: Total link budget is defined as Pout – Pin – typical connector losses. Operating in low rate mode
FWLF1634RLxx DWDM SFP Product Specification – August 2010 F i n i s a r
Finisar Corporation Page 8
Rev D1, Aug.2010
IX. Serial Communication Protocol
All Finisar SFPs support the 2-wire serial communication protocol to provide module ID
information as outlined in the SFP MSA1. These SFPs use an Atmel AT24C01A 128 byte
E2PROM with an address of A0h. For details on interfacing with the E2PROM, see the
Atmel data sheet titled “AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM.”3
Finisar SFPs also support diagnostic features as described in Finisar Applications Note AN-
20304 and SFF-84725, “Digital Diagnostic Monitoring Interface for Optical Transceivers”.
A controller IC that monitors system parameters such as laser current, module temperature,
transmitter power, and received power is accessible at address A2H. In addition, Finisar’s
DWDM SFPs provide extended set of ID information and diagnostic features as described
in the DWDM SFP MSA6.
I2C clock speed, digital diagnostic accuracy and digital diagnostic range can be found in the
table below. Values in the table represent the worst-case values over temperature, voltage,
and life.
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
I2C Clock Speed
0
100,000
Hz
Bus can be driven blind
Accuracy
Transceiver Case
Temperature
DDTemperature
-10
+10
°C
Measured on the top-side of
the module case
Transceiver Supply
Voltage
DDVoltage
-3
+3
%
Tx Bias Current
DDBias
-10
+10
%
Tx Output Power
DDTxPower
-2
+2
dB
Received Average
Power
DDRxPower
-2
+2
dB
Range
Transceiver Case
Temperature
DDTemperature
-40
85
°C
Transceiver Supply
Voltage
DDVoltage
3.0
4.0
V
Tx Bias Current
DDBias
0
90
mA
Tx Output Power
DDTxPower
-5
+10
dBm
Received Average
Power
DDRxPower
-30
-7
dBm
FWLF1634RLxx DWDM SFP Product Specification – August 2010 F i n i s a r
Finisar Corporation Page 9
Rev D1, Aug.2010
X. Mechanical Specifications
Finisar’s Multi-rate DWDM Small Form Factor Pluggable (SFP) transceivers are
compatible with the dimensions defined by the DWDM SFP Multi-Sourcing Agreement
(MSA)6.
Figure 1. DWDM SFP Outline Drawing (units in inches [mm])
FWLF1634RLxx DWDM SFP Product Specification – August 2010 F i n i s a r
Finisar Corporation Page 10
Rev D1, Aug.2010
XI. Ordering Information
Part Number Description
FWLF1634Ryxx DWDM SFP with APD Receiver
y = L: non rate select
xx = channel number (see product selection on page 2)
XII. References
1. Small Form Factor Pluggable (SFP) Transceiver Multi-Source Agreement (MSA),
September 2000. Documentation is currently available from Finisar upon request.
2. “SONET Transport Systems: Common Generic Criteria”, Telcordia Technologies,
GR-253-CORE, Issue 3, September 2000.
3. “AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM”, Atmel Corporation.
www.Atmel.com.
4. “Application Note AN-2030: Digital Diagnostic Monitoring Interface for Optical
Transceivers”, Finisar Corporation, April 2002.
5. “Digital Diagnostic Monitoring Interface For Optical Transceivers Rev 9.3”. SFF
Document No. SFF-8472.
6. Specifications for DWDM SFP Transceiver Draft 1.0.October 21 2005.
Documentation is available from Finisar upon request.
XIII. Revision HistoRL
Revision
Date
Description
A
8-15-2007
Document created.
B
1-20-2008
Modified by FF for preliminaRL customer distribution
C
6-3-2008
Modified to reflect new optical output power level
C1
8-25-08
Updated rise/fall time to 120ps
C2
2-23-09
Replace “Dispersion Noise Penalty” with “Min-OSNR requirement” at
BB/1600ps/nm
FWLF1634RLxx DWDM SFP Product Specification – August 2010 F i n i s a r
Finisar Corporation Page 11
Rev D1, Aug.2010
XIV. For More Information:
Finisar Corporation
1308 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. (408) 548-1000
Fax (408) 541-6138
sales@finisar.com
www.finisar.com