F i n i s a r
Preliminary Product Specification
DWDM SFP Transceiver
FWDM-1629-XX
PRODUCT FEATURES
·
Up to 1.25 Gb/s bi-directional data
links
·
·
Hot-pluggable SFP footprint
Temperature-stabilized DWDM-
rated DFB laser transmitter
·
·
·
·
100GHz ITU Grid, C Band
Low dispersion DFB laser suitable
Metal enclosure for low EMI
Extended operating range: -5°C to
70°C case temperature
APPLICATIONS
·
·
·
Amplified DWDM networks
Bandwidth aggregation
·
·
·
Wavelength controlled within ± 0.1
nm over life and temperature
Extended link budget with APD
receiver technology
Ring topologies with OADM
GbE and 1X FC compliant
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) package. The FWDM-1629 is designed expressly for service
providers deploying DWDM networking equipment in metropolitan Ethernet and SAN
networks. The fiber link budget has been enhanced to 30dB with an Avalanche Photo
Diode (APD) receiver.
In addition, digital diagnostic features are implemented as described in Finisar
Application Note AN-2030, “Digital Diagnostic Monitoring Interface for Optical
Transceivers”2.
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FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
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I.
Pin Descriptions
Pin
Symbol
Name/Description
Ref.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
VEET
TFAULT
TDIS
Transmitter Ground (Common with Receiver Ground)
Transmitter Fault
Transmitter Disable. Laser output disabled on high or open
1
2
3
3
3
4
5
1
1
1
MOD_DEF(2) Module Definition 2. Data line for Serial ID
MOD_DEF(1) Module Definition 1. Clock line for Serial ID
MOD_DEF(0) Module Definition 0. Grounded within the module
Rate Select
LOS
No connection required
Loss of Signal indication. Logic 0 indicates normal operation
Receiver Ground (Common with Transmitter Ground)
Receiver Ground (Common with Transmitter Ground)
Receiver Ground (Common with Transmitter Ground)
Receiver Inverted DATA out. AC Coupled
Receiver Non-inverted DATA out. AC Coupled
Receiver Ground (Common with Transmitter Ground)
Receiver Power Supply
Transmitter Power Supply
Transmitter Ground (Common with Receiver Ground)
Transmitter Non-Inverted DATA in. 100 ohm termination between TD+
and TD-, AC Coupled thereafter
VEER
VEER
VEER
RD-
RD+
VEER
VCCR
VCCT
VEET
1
1
TD+
19
20
TD-
VEET
Transmitter Inverted DATA in. See TD+
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. Finisar 2x receiver achieves simultaneous 1x and 2x 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.
VeeT
TD-
20
19
18
17
16
15
14
13
12
11
VeeT
1
2
TXFault
TD+
3
TX Disable
MOD-DEF(2)
MOD-DEF(1)
MOD-DEF(0)
Rate Select
LOS
VeeT
VccT
VccR
VeeR
RD+
RD-
4
5
Towards
Bezel
Towards
ASIC
6
7
8
9
VeeR
VeeR
VeeR
10
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FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
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Diagram of Host Board Connector Block Pin Numbers and Names
II.
Absolute Maximum Ratings
Parameter
Maximum Supply Voltage
Storage Temperature
Symbol
Vcc
TS
Min
-0.5
-10
-5
Typ
Max
4.7
85
Unit
V
°C
Ref.
Case Operating Temperature
TOP
70
°C
III.
Electrical Characteristics (TOP = -5 to 70 °C, VCC = 3.13 to 3.50 Volts)
Parameter
Symbol
Vcc
Icc
Isurge
Pmax
Min
3.13
Typ
3.30
Max
3.50
305
Icc+30
1.0
Unit
V
mA
mA
W
Ref.
Supply Voltage
Supply Current
Inrush Current
Maximum Power
TRANSMITTER
Input differential impedance
Single ended data input swing
Transmit Disable Voltage
Transmit Enable Voltage
RECEIVER
Rin
Vin,pp
VD
100
1
W
mV
V
250
Vcc – 1.3
Vee
1200
Vcc
Vee+ 0.8
VEN
V
2
Single ended data output swing
Data output rise time
Data output fall time
LOS Fault
Vout,pp
175
1000
150
150
mV
ps
ps
3
4
4
5
tr
tf
VLOSfault
Vcc – 0.5
VccHOST
V
LOS Normal
Power Supply Rejection
VLOS norm
PSR
Vee
100
Vee+0.5
V
mVpp
5
6
Notes:
1.
2.
3.
4.
5.
6.
Connected directly to TX data input pins. AC coupled thereafter.
Or open circuit.
Into 100 ohms differential termination.
20 – 80 %
Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
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.
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FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
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IV.
Low Speed Signals
Parameter
Symbol Min Typ Max Units Notes/Conditions
RX_LOS Assert Level
RX_LOS Deassert Level
RX_LOS Hysteresis
-42
0.5
-36
-34
2
dBm
dBm
dB
-32
100
100
10
RX_LOS Assert Delay
t_loss_on
t_loss_off
t_off
From detection of loss of signal
to assertion of RX_LOS
msec
RX_LOS Negate Delay
From detection of presence of
signal to negation of RX_LOS
msec
msec
TX_DISABLE Assert Time
Rising edge of TX_DISABLE to
fall of output signal below 10%
of nominal
TX_DISABLE Negate Time
t_on
1000
Falling edge of TX_DISABLE
to rise of output signal above
90% of nominal. Time
msec
indicated is under steady-state
temperature conditions.
TX_DISABLE Reset Time
TX_FAULT Assert
t_reset
10
TX_DISABLE HIGH before
TX_DISABLE set LOW
msec
-0.2
+0.2
nm TX_Fault will assert before the
device is outside of specified
wavelength range
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FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
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V.
Optical Parameters
Parameter
Symbol
Min
Typ
Max
Units Notes/Conditions
TRANSMITTER CHARACTERISTICS
Center Wavelength Spacing
100
0.2
X
GHz Corresponds to
approximately 0.8 nm
nm Full width, -20dB from
max
Spectral Width
0.3
Dl
20
Transmitter Center Wavelength –
End of Life
Transmitter Center Wavelength –
Start of Life
X - 100
Y - 25
30
X + 100 pm X = specified center
wavelength
l c
Y
Y + 25
pm Y = X – 60pm
l c
Side Mode Suppression Ratio
(SMSR)
SMSR
dB Modulated
Optical Rise/Fall Time
Transmitter Optical Output Power
tr / tf
Pout
200
+4
ps
Unfiltered, 80% -20%
0
dBm Average power coupled
into single mode fiber
dB
Transmitter Extinction Ratio
Transmitter Eye Opening
OMI
9.0
40
%
IEEE 802.3 and Fibre
Channel Eye Mask
Margin
Relative Intensity Noise
RIN
Pin
-120 dB/Hz
Dispersion Penalty at 180km
RECEIVER CHARACTERISTICS
Optical Input Wavelength
3.0
dB 3600ps/nm. See Note 3.
1520
1570
100
nm
Receiver Jitter Generation
ps
Peak to peak, -25 dBm
Rx power
Optical Input Power
(BER < 10 -9)
Pin
Pin
-32
-30
-9
-9
dBm 1.25 Gb/s w/
PRBS 2 7 -1
Optical Input Power
dBm 1.25 Gb/s w/
PRBS 2 7 -1
(BER < 10 -12
)
Optical Input Power –
Receiver Damage Threshold
Receiver Reflectance
6
dBm
RRX
-27
dB
OSNR Limit
OSNRmin
20
dB
OSNR Penalty
2.0
dB For OSNR = OSNRmin.
See Note 4.
Notes:
1. Parameters are specified over temperature and voltage, at end of life unless otherwise noted.
2. All parameters are measured on a Finisar SFP Evaluation Card unless otherwise noted.
3. Dispersion penalty is measured in loop back with OSNR set at Rx < 28 dB. Data rate and pattern used same
as specified for Optical Input Power. Dispersion penalty is measured at BER = 10-10
4. OSNR penalty is measured in loop back. Data rate and pattern used is same as specified for Optical Input
Power. OSNR penalty is measured at BER = 10-10
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FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
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VI. Wavelength Stabilization
The laser transmitter will not be turned on until its temperature is adjusted to ensure
operation within the specified channel (X +/- 0.4nm). This temperature stabilization time is
dependent on the ambient temperature conditions, but will typically occur within 90
seconds of powering the device. The device will transmit within the specified wavelength
tolerance (X +/- 0.1nm) within 5 seconds of transmitter operation.
VII. General Specifications
Parameter
Symbol
Min
1.06
30
1.25
Max
Units Notes/Conditions
Data Rate
BR
1.25
Gb/sec Fibre Channel, IEEE 802.3
compatible
Total System Budget
32
dB @ 1.25 Gb/s, BER <10-12 w/
PRBS 2-7-1. See Note 1
Note 1: Total system budget is defined as Pout – Pin – typical connector losses.
VIII. Environmental Specifications
Parameter
Symbol Min
Typ Max Units Notes/Conditions
Operating Temp
Top
Tsto
-5
70
85
°C Case temperature measured on top-side of
device
Storage Temp
Eye Safety
-10
°C Ambient temperature
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.
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FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
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IX. Serial Communication Protocol
All Finisar SFPs support the 2-wire serial communication protocol 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.”4
Finisar’s DWDM SFPs also support extended diagnostic features as described in Finisar
Applications Note AN-2030, “Digital Diagnostic Monitoring Interface for Optical
Transceivers”2. A controller IC that monitors system parameters such as laser current,
module temperature, transmitter power, and received power is accessible at address A2H.
Parameter
Symbol Min Typ
Catmel
Max
Units Notes/Conditions
I2C Clock for Atmel
(A0H) and Controller
IC (A2H)
0
100,000
Hz Bus can be driven blind.
( E2PROM Description TBD pending MSA)
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FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
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X.
Mechanical Specifications
Finisar’s Multi-rate DWDM Small Form Factor Pluggable (SFP) transceivers are
compatible with the dimensions defined by the SFP Multi-Sourcing Agreement (MSA).
Figure 1. DWDM SFP Outline Drawing
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FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
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XI. Ordering Information
Part Number
Description
FWDM-1629-XX
DWDM SFP with APD Receiver
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. “Application Note AN-2030: Digital Diagnostic Monitoring Interface for Optical
Transceivers”, Finisar Corporation, April 2002.
3. “AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM”, Atmel Corporation.
4. “Digital Diagnostic Monitoring Interface For Optical Transceivers Rev 6.1”,
September, 2004. Documentation is currently available from Finisar upon request.
For More Information:
Finisar Corporation
1308 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. (408) 548-1000
Fax (408) 541-6138
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