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COMMUNICATIONS MODULES & SUBSYSTEMS
2.5 Gb/s CWDM SFP Transceiver (Multirate) CT2 Series
Key Features
* SFP MSA compatible * 2.5 Gb/s compliant CWDM performance for short haul and long haul * Microprocessor-based design fully implements the Digital Diagnostic Monitoring Interface * Automatic output power and extinction ratio control over temperature and lifetime to compensate for laser efficiency degradation * Both PIN and APD versions meet -27 dB receiver reflectance * Optical parameters tuned and optimized over temperature in production test
Applications
* * * *
Metro access Metro core Wide area networks Optical crossconnects
Compliance
The JDSU CT2 Series 2.5 Gb/s Coarse Wavelength Division Multiplexing (CWDM) transceiver integrates optics and electronics in a Small Form Factor Pluggable (SFP) package. It is Multisource Agreement (MSA) compatible and designed for CWDM operation per ITU-T G.695 for unidirectional 8 channel black-link transmission (S-C8S1-1DX and S-C8L1-1DX). Although optimized for 2.5 Gb/s, the CT2 provides multi-rate capabilities and can be used for various protocols ranging from OC-3 (155 Mb/s) up to 2.7 Gb/s including 622 Mb/s, 1x/2x FC, GbE and 2x GbE. The CT2 Series CWDM SFP transceiver provides a fully G.695 8 channel blacklink compliant interface between the optical Mux/Demux photonic layer and the electrical layer. Its microprocessor-based modular design implements all features specified in the SFP MSA compatible 2-wire Serial Digital Diagnostic Monitoring Interface for Optical Transceivers. The major components in this module include an uncooled distributed feedback (DFB) based optical transmitter, a PIN or APD based optical receiver with integrated transimpedence amplifier (TIA), an APD high voltage circuit (if required), a microprocessor, a limiting post amplifier, and a laser driver. This CWDM transceiver design offers a "hot-pluggable" interface and is available in short haul (40 km, PIN) and long haul (80 km, APD) configurations.
* GR-253-CORE * ITU-T G.957 * SFF-8472 Revision 9.3 * ITU-T G.695
NORTH AMERICA: 800 498-JDSU (5378)
WORLDWIDE: +800 5378-JDSU
WEBSITE: www.jdsu.com
2.5 GB/S CWDM SFP TRANSCEIVER
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Dimensions Diagram (Specifications in mm unless otherwise noted; see dimensions table on next page.)
K REF J MIN A A F REF
D
F REF A
M C P N
Y MAX
B H MAX L MIN X 45 Y MAX
G REF
Section A-A
S R MAX See Detail Y
Q
W T U X REF V
AG AF AA REF AE REF
Z Z Z AB MAX
Detail Y
Section Z-Z
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Dimension Table for the CT2
Designator A B C D E F G H J K L M N P Q R S T U V W X Y Z AA AB AE
Dimension 13.7 mm 8.6 mm 8.5 mm 13.4 mm 1.0 mm 2.3 mm 4.2 mm 2.0 mm 28.5 mm 55.0 mm 1.1 mm x 45 2.0 mm 2.25 mm 1.0 mm 9.2 mm 0.7 mm 45.0 mm 34.6 mm 41.8 mm 2.7 mm 2.7 mm 7.3 mm 2.0 mm 0.45 mm 8.6 mm 2.6 mm 6.0 mm
Tolerance 0.1 mm 0.1 mm 0.1 mm 0.1 mm Maximum Reference Reference Maximum Minimum Reference Minimum 0.25 mm 0.1 mm 0.1 mm 0.1 mm Maximum 0.2 mm 0.3 mm 0.15 mm 0.05 mm 0.1 mm Reference Maximum 0.05 mm Reference Maximum Reference
Comments Transceiver width, nose piece or front that extends inside cage Transceiver height, front, that extends inside cage Transceiver height, rear Transceiver width, rear Extension of front sides outside of cage Location of cage grounding springs from centerline, top Location of side cage grounding springs from top Width of cage grounding springs Location of transition between nose piece and rear of transceiver Transceiver overall length Chamfer on bottom of housing Height of rear shoulder from transceiver printed circuit board Location of printed circuit board to bottom of transceiver Thickness of printed circuit board Width of printed circuit board Width of skirt in rear of transceiver Length from latch shoulder to rear of transceiver Length from latch shoulder to bottom opening of transceiver Length from latch shoulder to end of printed circuit board Length from latch shoulder to shoulder of transceiver outside of cage (location of positive stop) Clearance for actuator tines Transceiver length extending outside of cage Maximum length of top and bottom transceiver extending outside of cage Height of latch boss Transceiver height, front, that extends inside the cage Length of latch boss Width of cavity that contains the actuator
Bail Latch Color Code Definition
Bail Latch Color Gray Violet Blue Green Yellow Orange Red Brown
Wavelength 1471 nm 1491 nm 1511 nm 1531 nm 1551 nm 1571 nm 1591 nm 1611 nm
Typical Reach Short haul/Long haul Short haul/Long haul Short haul/Long haul Short haul/Long haul Short haul/Long haul Short haul/Long haul Short haul/Long haul Short haul/Long haul
2.5 GB/S CWDM SFP TRANSCEIVER
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CT2 Electrical Pad Layout
20 19 18 17 16 15 14 13 12 11
VeeT TDTD+ VeeT VccT VccR VeeR RD+ RDVeeR
1 2 3 4 5 6 7 8 9 10
VeeT Tx Fault Tx Disable MOD-DEF(2) MOD-DEF(1) MOD-DEF(0) Rate Select LOS VeeR VeeR
Top of Board
Bottom of Board (As Viewed through Top of Board)
Transceiver Pin Descriptions
Pin TD TDb RD RDb Rate_select TxDIS LOS
Description Un-clocked, multirate, differential serial bit stream (155 Mb/s to 2.7 Gb/s) used to drive the optical transmitter. Internally AC coupled and terminated via internal 100 differential impedence. Differential received electrical signal capable of detecting 155 Mb/s to 2.7 Gb/s bit patterns. The differential pair is internally biased and AC coupled. This signal requires 100 external differential termination. Internally monitored and available for future use. Can be customized for specific applications. Transmitter Disable Input. A logic HIGH on this input pin disables the transmitter's laser so that there is no optical output. If left open the transmitter will be disabled. Loss of Signal (Open Collector). A logic HIGH on this output indicates an incoming signal level that is less than -25 dBm but no greater than -31 dBm for the 40 km configuration and less than -34 dBm but no greater than -40 dBm for the 80 km configuration. LOS shall deassert (logic LOW) when a 3 dB (maximum), 0.5 dB (minimum) hysteresis is obtained. Transmitter fault (Open collector). A logic HIGH indicates that the transmitter is in a fault condition. MOD_DEF(0) is internally grounded to indicate the presence of the module. Must be pulled-up on host board with 10 K resistor. MOD_DEF(1) is the clock of the 2 wire interface for module monitoring. MOD_DEF(2) is the data line of the 2 wire interface for module monitoring. Receiver, Transmitter power supply, respectively Receiver, Transmitter ground, respectively. The chassis ground and circuit ground isolation is configurable.
Tx_fault MOD_DEF(0) MOD_DEF(1) MOD_DEF(2) VccR,VccT VeeR, VeeT
2.5 GB/S CWDM SFP TRANSCEIVER
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Absolute Maximum Ratings
Parameter Standard operating case temperature range Extended operating case temperature range Storage case temperature range Supply voltage Voltage on any input/output pin High-speed output source current Lead soldering temperature/time Operating relative humidity (non-condensing) Receiver optical input power PIN APD
Minimum 0 C -5 C -40 C -0.5 V 0V 5% -
Maximum 70 C 85 C 85 C 4.0 V Vcc 50 mA 250 C/10 seconds 85% 3 dBm 0 dBm
Transceiver Electrical Input/Output Characteristics
(Vcc = 3.3 V5%)
Parameter Input data signal levels input voltage swing, DVIN (internally AC coupled) Transmitter disable input (disabled/enabled) Rate select input (high data rate/low data rate) Transmitter fault output (asserted/deasserted) Output data signal levels1 output voltage swing, DVOUT (internally AC coupled) Loss-of-signal output (output high, VOH/output low, VOL)
Minimum 200 mV 2.0 V/0 V 2.8 V/0 V 2.4 V/0 V 400 mV 2.4 V/0 V
Maximum 2000 mV Vcc/0.8 V Vcc/0.6 V Vcc/0.5 V 2000 mV Vcc/0.5 V
1. Terminated into 100 differential. These levels are guaranteed down to 2 dB lower than the typical receiver sensitivity for each data rate and reach.
2.5 GB/S CWDM SFP TRANSCEIVER
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Timing of Status and Control Input/Output
Parameter TX_DISABLE assert time TX_DISABLE deassert time Time to initialize TX_FAULT assert time TX_DISABLE for reset LOS assert time LOS deassert time 2-wire serial clock rate
Symbol t_off t_on t_init t_fault t_reset t_loss_on t_loss_off f_serial_clock
Condition Time from rising edge of TX_DISABLE to when the output optical power falls below 10% of nominal Time from falling edge of TX_DISABLE to when the output optical power rises above 90% of nominal Upon power up or negation of TX_FAULT due to TX_DISABLE Time from a fault condition to TX_FAULT assertion Time TX_DISABLE must be held HIGH to reset TX_FAULT Time from loss of signal to assertion of LOS Time from non-loss condition to LOS deassertion -
Specification Maximum 10 s Maximum 1 ms Maximum Maximum Minimum Maximum Maximum Maximum 300 ms 100 s 10 s 100 s 100 s 100 kHz
Power Supply Voltage
Parameter Supply voltage Minimum Typical Maximum Typical Maximum
Short Haul (40 km, PIN) 3.1 V 3.3 V 3.5 V 275 mA 320 mA
Long Haul (80 km, APD) 3.1 V 3.3 V 3.5 V 285 mA 350 mA
Power supply current drain1
1. Applies to hardware revision 2. Does not include output termination resistor current.
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Optical Specifications
Parameter Average output power1 Minimum Typical Maximum Minimum Typical Maximum Minimum Typical Maximum Typical Maximum Minimum Minimum Typical Maximum Minimum Maximum Maximum
40 km (PIN) at OC-48 0 dBm 1.5 dBm 4 dBm 0.5 dBm 1.5 dBm 3 dBm -6.5 nm Center 6.5 nm 0.3 nm 1 nm 30 dB 9.0 dB 10.0 dB 11.5 dB 8.2 dB 12.0 dB 200 ps Compliant with GR-253 and ITU-T G.957 10% 15% 70 mUIP-P 7 mUIrms -50 dBm -40 dBm -21 dBm -23 dBm -18 dBm 0 dBm 3 s 50 s 100 s 1.5 dB 1000 ps/nm -27 dB -24 dB 10-15 -24 dB 155 to 2700 Mb/s
80 km (APD) at OC-48 0 dBm 1.5 dBm 4 dBm 0.5 dBm 1.5 dBm 3 dBm -6.5 nm Center 6.5 nm 0.3 nm 1 nm 30 dB 9 dB 10 dB 11.5 dB 8.2 dB 12.0 dB 200 ps Compliant with GR-253 and ITU-T G.957 10% 15% 70 mUIP-P 7 mUIrms -50 dBm -40 dBm -30 dBm -32 dBm -28 dBm -8 dBm 3 s 50 s 100 s 2.5 dB 1600 ps/nm -27 dB -24 dB 10-15 -24 dB 155 to 2700 Mb/s
BOL power output1
TX operating wavelength
Spectral width2 Side mode suppression ratio (DFB laser)3 Extinction ratio4 (BOL)
Extinction ratio4 (EOL) Optical rise and fall times (20 to 80%)5 Eye mask of optical output Eye mask margin (filtered) Jitter generation (peak-to-peak)6 Jitter generation (rms)6 Power output with transmitter disabled Receiver sensitivity (BOL, BER=1 x 10-10, ER=10 dB) Receiver sensitivity (EOL, BER=1 x 10-10, ER=8.2 dB) Maximum received optical power Link status response time
Optical path penalty Dispersion Receiver reflectance Minimum optical return loss BER floor Reflect into Tx for <1 dB degradation at the receiver Bit rate
1. Fiber coupled power, connector repeatability is 1 dB.
Minimum Typical Maximum Maximum Typical Maximum Minimum Typical Minimum Minimum Minimum Typical Maximum Maximum Maximum Maximum Minimum Maximum Maximum
2. Full spectral width measured 20 dB down from the central wavelength peak under fully modulated conditions (for DFB lasers). 3. Ratio of the average output power in the dominant longitudinal mode to the power in the most significant side mode under fully modulated conditions. 4. Ratio of logic 1 output power to logic 0 output power under fully modulated conditions. When operated at data rates below 1 Gb/s, the maximum extinction ratio specification is increased by 2 dB. 5. Using an unfiltered measurement. 6. Formatted OC-48 pattern with scrambled PRBS 23 payload using Agilent Omni BER as the optical source driving an external OC-48 optical receiver with CDR. The differential data outputs of this optical receiver with CDR. The differential dataoutputs of this optical receiver are used as the electrical inputs for the CT2 transmitter which optically drives the Omni BER receiver input.
2.5 GB/S CWDM SFP TRANSCEIVER
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Ordering Information
For more information on this or other products and their availability, please contact your local JDSU account manager or JDSU directly at 1-800-498-JDSU (5378) in North America and +800-5378-JDSU worldwide or via e-mail at customer.service@jdsu.com.
Sample: CT2-MI2LBCW13C2
CT2- M
Code M Rate 2.5 Gb/s (multirate)1
2
Code L
L
Connector/ Pigtail Length LC duplex Code CW1 CW2 CW3 CW4 CW5 CW6 CW7 CW8 Format/ITU Channel/ Wavelength CWDM Channel 1 (1471 nm) CWDM Channel 2 (1491 nm) CWDM Channel 3 (1511 nm) CWDM Channel 4 (1531 nm) CWDM Channel 5 (1551 nm) CWDM Channel 6 (1571 nm) CWDM Channel 7 (1591 nm) CWDM Channel 8 (1611 nm) Code Custom Options (Output Power/ Dispersion/Channel Spacing)3 Standard
Code I2 L2
Reach Short haul (40 km, PIN) Long haul (80 km, APD)
2
C
Code A B D F
Temperature Range/ Package 0 to 70 C case temperature -5 to 75 C case temperature -5 to 80 C case temperature -5 to 85 C case temperature
Code 1 2
Code 1 3 Y
Software Feature Set Software release 1, long haul Software release 3, short haul Standard TX fault operation, no DDM interface, page AO only
3
4
Hardware Revision Hardware revision 1, long haul wide body Hardware revision 2, short haul wide body Hardware revision 3, narrow body high desity bail latch Hardware revision 4, narrow body top-down bail latch
1. Fully G.695 compliant at 2.5 Gb/s 2. Per GR-253-Core 3. Customer specific options available upon request
Telcordia is a registered trademark of Telcordia Technologies Incorporated. All statements, technical information and recommendations related to the products herein are based upon information believed to be reliable or accurate. However, the accuracy or completeness thereof is not guaranteed, and no responsibility is assumed for any inaccuracies. The user assumes all risks and liability whatsoever in connection with the use of a product or its application. JDSU reserves the right to change at any time without notice the design, specifications, function, fit or form of its products described herein, including withdrawal at any time of a product offered for sale herein. JDSU makes no representations that the products herein are free from any intellectual property claims of others. Please contact JDSU for more information. JDSU and the JDSU logo are trademarks of JDS Uniphase Corporation. Other trademarks are the property of their respective holders. (c)2006 JDS Uniphase Corporation. All rights reserved. 10143066 Rev. 003 05/06 CT2OC48CWDM.DS.CMS.AE
NORTH AMERICA: 800 498-JDSU (5378)
WORLDWIDE: +800 5378-JDSU
WEBSITE: www.jdsu.com

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