GE-PON ONU SmalForm-Factor Transceiver

Transcription

1 GE-PON ONU SmalForm-Factor Transceiver EPO PX10 Product Description The GPON ONU diplexer SC pigtail 2x5 SFF single mode single fiber transceivers are high performance modules for bi-directional serial optical data communications. These modules are designed for single mode fiber and transmitter operation at a nominal wavelength of 1310 nm. The transmitter section uses a multiple quantum well FP laser and is a class 1 laser compliant according to International Safety Standard IEC-825. The receiver section uses a planar InGaAs PIN photodiode for low dark current and excellent responsibility. An integrated WDM coupler (1310 nm transmit/1490 nm reflect) to separate 1310 nm output light and 1490 nm input light. Features Compliant with IEEE 802.3ah/D BASE-PX10-U Wavelength Tx 1310nm FP Laser/Rx 1490 nm 2x5 pins Small Form Factor style package/smf Pigtail with SC/UPC Connector Wave Solderable and Aqueous Washable Class 1 Laser Int. Safety Standard IEC-825 Compliant Uncooled FP Laser diode with MQW structure Complies with Telcordia GR-468 Single +3.3V power supply Case Operating Temperature: 0 to 70 C AC/AC Coupling In/Out Interface SD LVTTL Level Tx Burst Mode Applications GE-PON ONU Absolute Maximum Ratings Parameter Symbol Minimum Maximum Units Power Supply Voltage V CC V Soldering Temperature (10 seconds on leads only) C Storage Temperature T stg C Operating Conditions Power Supply Voltage V CC V Ambient Operating Temperature T A 0 70 C Humidity (without dew) 5 95 % Data Rate Mb/s Oplink Communications, R Inc.

2 Transmitter Optical Specifications (0 C< T C <70 C, 3.1V<V CC <3.5V) Optical Transmit Average Power 1) P O dbm Optical Transmit Average Power 2) P O dbm Average Power of OFF Transmitter P O dbm Output Center Wavelength 3) λ nm Output Spectrum Width 4) Δλ Table 1, Figure 1 nm Extinction Ratio E R db Output Eye Mask Compliant with IEEE 802.3ah Laser Turn On Delay Time T ON ns Laser Turn Off Delay Time T OFF ns Optical Rise Time 5) t r ns Optical Fall Time 5) t f ns Optical Return Loss of ODN 20 db Optical Return Loss Tolerance 15 db Transmitter Reflectance 6) - 6 db Transmitter and Dispersion Penalty 2.8 db Relative Intensity Noise RIN Total Jitter 7) T J ns 1) BOL, Continuous mode 2) EOL, Continuous mode 3) This represents the range of center wavelength +/-1σ of the rms spectral width. 4) σ//measured with PRBS 5) 20%-80% Value 6) Measured at 1310nm 7) Measured with PRBS Receiver Optical Specifications (0 C< Tc<70 C, 3.1V< <3.5V) Sensitivity 1, 2) dbm Maximum Input Power Pin - 3 dbm SD Asserted 3) Pa dbm SD Deasserted 4) Pd dbm SD Hysteresis db Receiver Reflectance 5) - 12 db Receiver Reflectance 6) - 20 db Wavelength of Operation nm S/X Endurance 1480 to 1500nm 7) 10 db 1550 to 1560nm 8) - 18 db 1625 to 1655nm 9) 4 db 1) With BER better than or equal to 1x10-12, measured in the center of the eye opening with NRZ PRBS,under the conditions of various S/X as small value as possible is desirable. Sensitivity is measured at a low but compliant extinction ratio, and correction made for any difference between the measurement extinction ratio and the specified minimum extinction ratio (9dB). This assurance should be met with asynchronous data flowing out of the optical transmitter of the system under test. The output data pattern from the transmitter of the system under test is a repetition of 0/1 pattern as defined for this measurement. 2) EOL, LD turn ON 3) Measured on transition: low to high 4) Measured on transition: high to low 5) Measured at 1490nm 6) Measured at 1550m 7) When the asynchronous light (average) of 1480 to1500 nm wavelength 10dB lower than downstream optical power (average) is received during communication with OLT, 1x10-12 or less bit error rate satisfied. Interference light is 0/1 asynchronous pattern at 1.25Gbps. 8) When the asynchronous light (peak) of 1550 to 1560nm wavelength 18dB higher than downstream optical power (average) is received during communication with OLT, 1x10-12 or less bit error rate satisfied. Interference light is 0/1 asynchronous pattern at 1.25Gbps. 9) When the asynchronous light (peak) of 1625 to 1655nm wavelength 4dB lower than downstream optical power (Peak) is received during communication with OLT, 1x10-12 or less bit error rate satisfied. Interference light is pulse width 1us/500ns/20ns, pulse cycle 100us. 2 R

3 Table 1 - Transmitter spectral limits Center Wavelength RMS spectral width* (1000BASE-PX10-U Standard) RMS spectral width to achieve epsilon e<=0.115** (infomative) nm nm nm nm nm nm nm nm nm nm * A bold is a 1000BASE-PX10-U standard, Other is Infomative. ** e=dispersion x length x RMS spectral width x signaling speed Figure BASE-PX10-U transmitter spectral limits 4 RMS spectral width (nm) Maximum allowed RMS spectral width (1000BASE-PX10-U standard) RMS spectral width to achieve e =0.115 (informative) Wavelength (nm) 3 RevD

4 Transmitter Electrical Interface Power Supply Current 1) I CC 200 ma Transmit Burst Enable Voltage V BEN 2.0 V CC V Transmit Burst Disable Voltage V BDIS V Data Input Voltage-Low 2) VI mvp-p Data Input Voltage-High 2) VI mvp-p Data Input Length ns Data Input Burst Interval infinity nc 1) Include R7~R10, Recommended Circuit Schematic 2) AC coupled inputs Receiver Electrical Interface Power Supply Current 1) I CC 140 ma Data Input Voltage-Single Ended 2) mvp-p Data Input Voltage-Differential 2) mvp-p SD Output Voltage Low 3) V SDL 0.8 V SD Output Voltage High 3) I SDH 2 V CC V 1) Include R1~ R4, Recommended Circuit Schematic 2) AC coupled outputs 3) LVTTL Output Connection Diagram PIN Symbol Notes 1 VEER Receiver ground 2 VCCR +3.3V Receiver power supply 3 SD Receiver signal detect, High for normal I/P power 4 RD- Receiver Data Out Bar (internally AC-Coupled) No internal terminations will be provided 5 RD+ Receiver Data Out (internally AC-Coupled) No internal terminations will be provided 6 VCCT +3.3V transmitter power supply 7 VEET Transmitter ground 8 TX_BRST Transmitter burst output control (LVTTL), High for Burst enable, Low for Burst disable 9 TD+ Transmitter non-inverted data input, Internal terminations will be provided & internal 10 TD- Transmitter inverted data input, Internal terminations will be provided & internal Laser Safety: This single mode transceiver is a Class1 laser product. It complies with IEC 825 and FDA 21 CFR and The transceiver must be operated within the specified temperature and voltage limits. The optical ports of the module shall be terminated with an optical connector or with a dust plug. DATE OF MANUFACTURE: This product complies with 21 CFR and Meets Class I Laser Safety Requirements 4 R

5 Recommended Circuit Schematic TRANSCEIVER LD Driver Pre Amp Post Amp TX_ RX_ TX_GND 7 BEN 8 TX+ 9 TX C2 L2 C1 SD 3 4 RX- 5 RX+ RX_GND 1 C1=4.7µF, C2=C3=20µF, C4=C5=C6=C7=0.1µF, L1=L2=47µH R5=R7=R9=130R, R6=R8=R10=82R R1=R3=82R, R2=R4=130R For SD LVTTL Level, R5=R6=N.C. 6 R10 R8 C3 L1 R2 R4 R9 R7 R1 R3 Zo=50R Zo=50R R5 R6 Zo=50R SerDesIC BEN LVPECL SD LVPECL side ground plane beneath the transceiver must be used. In applications that include many other high speed devices, a multi-layer PCB is highly recommended. This permits the placement of power and ground on separate layers, which all them to be isolated from the signal lines. Multilayer construction also permits the routing of signal traces away from high level, high speed signal lines. To minimize the possibility of coupling noise into the receiver section, high level, high speed signals such as transmitter inputs and clock lines should be routed as far away as possible from the receiver pins. The split-load terminations for ECL signals need to be located at the input of devices receiving those ECL signals. The power supply filtering is required for good EMI performance. Use short tracks from the inductor L1/L2 to the module Rx and Tx. A GND plane under the module is required for good EMI and sensitivity performance. Recommended Circuit Board Layout Noise that couples into the receiver through the power supply pins can also degrade performance. It is recommended that a pi filter is designed in both the transmitter and receiver power supplies. EMI and ESD Considerations Oplink transceivers offer a metal case and shielded design to minimize the EMI challenge facing the host equipment designer. These transceivers provided superior EMI performance. This greatly assists the designer in the management of the overall system EMI performance. Dimension in millimeter (inches) NOTES: 1. This figure describe the recommended circuit board layout for the sff transceiver. 2. The hatched areas are keep-out areas reserved for housing standoff. No metal traces or ground connection in keep-out areas. 3. Holes for housing leads must be tied to signal ground. Printed Circuit Board Layout Considerations A fiber-optic receiver employs a very high gain, wide bandwidth transimpedance amplifier. This amplifier detects and amplifies signals that are only tens of na in amplitude when the receiver is operating near its limit. Any unwanted signal currents that couple into the receiver circuitry causes a decrease in the receiver s sensitivity and can also degrades the of the receiver s signal detect (SD) circuit. To minimize the coupling of unwanted noise into the receiver, careful attention must be given to the printed circuit board. At a minimum, a double-sided printed circuit board (PCB) with a large component 5 R

6 Package Diagram (Units=mm) Landing Pkwy Fremont, CA Tel: (510) Fax: (510) Ordering Information EPO 4 G E J B 1 H P 3 G reserves the right to make changes in equipment design or specifications without notice. Information supplied by Oplink Communications, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by for its use nor for any infringements of third parties, which may result from its use. No license is granted by implication or otherwise under any patent right of 2008, R