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FIBERTOP 25G LR SFP28 Transceiver SMF 1310nm 10km LC DOM
This FIBERTOP SFP-SM31T5-10DC transceiver is high performance, cost effective modules supporting data rate of 25.78Gbps and 10km transmission distance with SMF.
The transceiver consists of three sections: a DFB laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit.
All modules satisfy class I laser safety requirements.
The transceivers are compatible with SFP Multi-Source Agreement and SFF-8472 digital diagnostics functions.
Additional product features include Digital Optical Monitoring (DOM) support which allows access to real-time operating parameters.
Technical Specification
| Vendor Name | FIBERTOP | FIBERTOP Part Number(s) | SFP-SM31T5-10DC |
| Transceiver Type | LR | Reach | 10km |
| Wavelength | 1310nm | Form Type | SFP28 |
| Speed Description | 25G | Media | SMF |
| Connector | LC | Extinction Ratio | > 3.5 dB |
| TX Power | -7.0 ~ -2 dBm | Receiver Sensitivity | < -13.3 dBm |
| Applications | 25GBASE-LR | Environment | Operating:0 to 70°C Storage: -40 to 85°C |
Questions & Answers
Q：For 25G module, can we preconfigure the module to operate in 10G mode ? Setting in register A2 ( bits 110.3 and 118.3) need to be persistent.
So when the module comes up in customer switch after power up, they do not have to do anything. [ They actually need 25G in one direction and 10G in other direction]
A：According to the protocol CDR shutdown function is a power-down reset type of variable control, every time you power on the working module is the default open 25G CDR, such as shutdown requires software control.