Softel SFP GPON OLT Class C++++ Transceiver module
Model Number: OLT-SFP-C++++
Brand: Softel
MOQ: 1
Data Rate TX 2.488Gbps/RX1.244Gbps
1490nm continuous-mode DFB laser transmitter
1310nm burst-mode APD-TIA receiver
01
Product Description
The GPON OLT Transceiver module is designed for Gigabit Ethernet Passive Optical Network（GPON） 20km transmission. The module incorporates 1490nm continuous-mode transmitter and 1310nm burst-mode receiver. The transmitter section uses a 1490nm DFB laser and an integrated laser driver which is designed to be class-1 eye safe under any single fault. The laser driver includes APC and temperature compensation functions, which are used for keeping the launch optical power and extinction ratio constant over temperature and aging.
The receiver section uses an integrated APD and BM-preamplifier mounted together. The module has the function that indicates receiver burst-power-detect signal. The receiver includes digitalized burst mode optical power monitoring function, which converses any of a received ONU optical power directly in digital, with a Trigger input from system. When rising edge of Trigger detected, the DDM processor starts a burst optical power conversion, the digital result is available via DDM interface after Burst Optical Power Conversion Time. Trigger pulse width should be more than Burst Optical Power Conversion Holding Time. An integrated WDM coupler can distinguish 1310nm input light from 1490nm output light. The metallic package guarantees excellent EMI and EMC characteristics.
Product Features
- Single fiber bi-directional data links asymmetric TX2488Mbps/RX1244Mbps application
- 1490nm continuous-mode DFB laser transmitter and 1310nm burst-mode APD-TIA receiver
- Small Form Factor Pluggable package with SC/UPC Connector
- Reset burst-mode receiver design support more than 15dB dynamic range
- Single +3.3V power supply
- Digital diagnostic monitoring interface
- Digital burst RSSI function to monitor the input optical power level
- LVPECL compatible data input/output interface
- LVTTL transmitter disable control
- LVTTL transmitter laser fault alarm
- LVTTL receiver Signal Detect (SD) indication
- Low EMI and excellent ESD protection
- Class I laser safety standard IEC-60825 compliant
| Electrical Characteristics | ||||||||
| Parameter | Symbol | Min | Type | Max | Units | Notes | ||
| Transmitter | ||||||||
| Differential Data Input Swing | Vin | 200 | - | 2400 | mVpp | 1 | ||
| Input Differential Impedance | Zin | 90 | 100 | 110 | ohm | |||
| Tx_Disable | Disable | VD | 2.0 | - | VCC | V | ||
| Enable | VEN | GND | - | GND+0.8 | V | |||
| TX_ Fault | Fault | VF | 2.0 | - | VCC | V | ||
| Normal | VNO | GND | - | GND+0.8 | V | |||
| Receiver | ||||||||
| Differential Date Output Swing | Vout | 600 | - | 1500 | mVpp | 2 | ||
| Output Differential Impedance | Zout | 90 | 100 | 110 | ohm | |||
| Signal Detect de-assert Time | TSDD | ns | - | - | 12.8 | 3 | ||
| Signal Detect assert Time | TSDA | ns | - | - | 50 | 4 | ||
| Signal DetectVoltage | High | VOH | 2.4 | - | VCC | V | ||
| Low | VOL | GND | - | GND+0.4 | V | |||
| Optical Characteristics | ||||||
| Parameter | Symbol | Units | Min. | Typ. | Max. | Notes |
| Transmitter | ||||||
| Data Rate | BR | Mbps | - | 2488 | - | |
| Optical Center Wavelength | λC | nm | 1480 | 1490 | 1500 | |
| Optical Spectrum Width (-20dB) | ∆λ | nm | - | - | 1 | |
| Side Mode Suppression Ratio | SMSR | dB | 30 | - | ||
| Power-OFF Transmitter Optical Power | dBm | - | - | -39 | 3 | |
| Extinction Ratio | ER | dB | 8.2 | - | - | 4 |
| Tolerance to Transmitter Incident Light | dB | -15 | - | - | ||
| Transmitter and Dispersion Penalty | TDP | dB | - | - | 1 | |
| Optical Waveform Diagram | ITU-T G.984.2 | 5 | ||||
| Parameter | Symbol | Unit | Min | Typ. | Max | Notes |
| Receiver | ||||||
| Data Rate | BR | Mbps | - | 1244 | - | |
| Operating Wavelength | λC | nm | 1260 | 1310 | 1360 | |
| Saturation Optical Power | PSAT(C++) | dBm | -12 | - | - | 6 |
| PSAT(C+++) | dBm | -15 | - | - | 6 | |
| PSAT(C++++) | dBm | -15 | - | - | 6 | |
| Signal Detect Assert Level | SDA | dBm | - | - | -34 | 6 |
| Signal Detect De-Assert Level | SDD | dBm | -45 | - | - | 6 |
| Signal Detect Hysteresis | dBm | 0.5 | - | 6 | ||
| Receiver Reflectance | dB | - | - | -12 | ||
| Receiver Burst Mode Dynamic Range | dB | 15 | 7 | |||
| Absolute Maximum Ratings | |||||
| Parameter | Condition | Unit |
Min. |
Typ. | Max. |
| Supply Voltage | V |
-0.5 |
- |
3.6 |
|
| Storage Temperature | Case Temperature | ℃ |
-45 |
- |
+85 |
| Relative Humidity, Storage | None Condensing | % |
+5 |
- |
+95 |
| Rx Total Optical Power | Damage Threshold | dBm | - | - | -8 |
| Operating Environment | |||||
| Parameter | Condition | Unit | Min. | Typ. | Max. |
| Power Supply Voltage | V | 3.13 | 3.3 | 3.47 | |
| Operating Case Temperature | Standard | ℃ | 0 | - | +70 |
