Shenzhen Olycom Technology Co., Ltd.
Professional Fiber Optic Transmission Equipment Manufacturer
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Description
Application
25GBASE-LR
Optical and Electrical Characteristics
| Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
| Transmitter | ||||||||
| Centre Wavelength | λc | λc-6.5 | λc | λc+6.5 | nm | |||
| Spectral Width(-20dB) | Δλ | 1 | nm | |||||
| Side-Mode Suppression Ratio | SMSR | 30 | - | dB | ||||
| Average Output Power | Pout | 0 | 6 | dBm | 1 | |||
| Extinction Ratio | ER | 3.5 | dB | |||||
| Data Input Swing Differential | VIN | 180 | 850 | mV | 2 | |||
| Input Differential Impedance | ZIN | 90 | 100 | 110 | Ω | |||
| TX Disable | Disable | 2.0 | Vcc | V | ||||
| Enable | 0 | 0.8 | V | |||||
| TX Fault | Fault | 2.0 | Vcc | V | ||||
| Normal | 0 | 0.8 | V | |||||
| Receiver | ||||||||
| Centre Wavelength | λc | 1260 | 1620 | nm | ||||
| Receiver Sensitivity | -13.3 | dBm | 3 | |||||
| Receiver Overload | 2 | dBm | 3 | |||||
| LOS De-Assert | LOSD | -15 | dBm | |||||
| LOS Assert | LOSA | -30 | dBm | |||||
| LOS Hysteresis | 0.5 | dB | ||||||
| Data Output Swing Differential | Vout | 300 | 900 | mV | 4 | |||
| LOS | High | 2.0 | Vcc | V | ||||
| Low | 0.8 | V | ||||||
Digital Diagnostic Memory Map
The transceivers provide serial ID memory contents and diagnostic information about the present operating conditions by the 2-wire serial interface (SCL, SDA).
The diagnostic information with internal calibration or external calibration all are implemented, including received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring.
The digital diagnostic memory map specific data field defines as following.
Pin Description
| Pin | Signal Name | Description | Plug Seq. | Notes |
| 1 | VEET | Transmitter Ground | 1 | |
| 2 | TX FAULT | Transmitter Fault Indication | 3 | Note 1 |
| 3 | TX DISABLE | Transmitter Disable | 3 | Note 2 |
| 4 | SDA | SDA Serial Data Signal | 3 | |
| 5 | SCL | SCL Serial Clock Signal | 3 | |
| 6 | MOD_ABS | Module Absent. Grounded within the module | 3 | |
| 7 | RS0 | Not Connected | 3 | |
| 8 | LOS | Loss of Signal | 3 | Note 3 |
| 9 | RS1 | Not Connected | 3 | |
| 10 | VEER | Receiver ground | 1 | |
| 11 | VEER | Receiver ground | 1 | |
| 12 | RD- | Inv. Received Data Out | 3 | Note 4 |
| 13 | RD+ | Received Data Out | 3 | Note 4 |
| 14 | VEER | Receiver ground | 1 | |
| 15 | VCCR | Receiver Power Supply | 2 | |
| 16 | VCCT | Transmitter Power Supply | 2 | |
| 17 | VEET | Transmitter Ground | 1 | |
| 18 | TD+ | Transmit Data In | 3 | Note 5 |
| 19 | TD- | Inv. Transmit Data In | 3 | Note 5 |
| 20 | VEET | Transmitter Ground | 1 |
Dimension
Ordering information
| Part Number | Product Description |
| OSPLTG10D | 1271~1371nm, 25.78Gbps, LC, 10km, 0°C~+70°C, with DDM |
| λC Wavelength Guide | |||||||||||
| Code | λC | Unit | Code | λC | Unit | Code | λC | Unit | Code | λC | Unit |
| 27 | 1271 | nm | 29 | 1291 | nm | 31 | 1311 | nm | 33 | 1331 | nm |
| 35 | 1351 | nm | 37 | 1371 | nm | ||||||