25G CWDM SFP28 ER 1330nm 40km
- Hot-pluggable SFP28 package
- Full-duplex transceiver module
- CWDM DML transmitter and APD receiver
- Compliant with SFF-8472, SFF-8431, SFF-8432, and SFP28 MSA Ethernet standards
- Maximum power consumption less than 2W
- Built-in Digital Diagnostic Monitoring (DDM)
- Power supply voltage 3.3V
- RoHS environmental standards compliant (lead-free)
- Class 1/1M product per IEC60825-1 requirements
- Meets Telcordia (Bellcore) GR-468-CORE reliability requirements
- Meets EMI and ESD requirements
Warranty : 30-Day Free Return, 3-Year Free Replacement, 5-Year Warranty, Lifetime After-sales Technical Support.
| Product Model | SFP-25G-CWDM40 | Vendor Name | Fiberolink |
| Form Factor | SFP28 | Data Rate | 25.78Gbps |
| Wavelength | 1270-1370nm | Distance | 40km |
| Connector | LC Duplex | Cable Type | SMF |
| Transmitter Type | DML | Detector Types | APD |
| TX Power | 0~6dBm | Receiver Sensitivity | < -19dBm |
| Power Consumption | ≤2W | Operation Temperature | 0~70°C |
| DDM | Support | EMC | Support |
| Modulation | NRZ | CDR | TX & RX Built-in CDR |
| Protocols | SFF-8472, SFF-8431, SFF-8432, SFP28 MSA, CPRI, eCPRI | ||
Q: What are the maximum transmission distances for 25G DAC and AOC?
A: The maximum transmission distance for DAC is 5 meters, while AOC can reach up to 100 meters.
Q: Is Forward Error Correction (FEC) required when using 25G SFP28 transceiver modules?
A: FEC can lower the Bit Error Rate (BER) to 10^-12. For 25G modules, RS-FEC should be enabled when the current FEC BER exceeds 5×10^-5, and FC-FEC when it surpasses 10^-8. Refer to sections 74 (FC-FEC) and 91 (RS-FEC) of the IEEE802.3 standard for further details.
Q: Is FEC necessary when using 25G DAC?
A: According to the IEEE 802.3by specification, FEC is not required for 25G DAC with transmission distances of 1, 2, or 3 meters. RS-FEC activation is necessary when the distance extends to 5 meters.
Q: What is a 25G dual-rate module?
A: A dual-rate module supports two distinct data rate types. A 25G dual-rate module can operate at both 10G and 25G speeds, allowing for rate switching on supported device ports.
Q: What are the various application scenarios for different 25G SFP28 transceiver modules?
A: Traditional 25G SFP28 optical modules (SR, LR, ER, BIDI) are primarily used for interconnecting servers, switches, and routers in data centers.
25G CWDM SFP28 optical modules are single-mode, dual-fiber CWDM modules with a maximum speed of 25.78125Gbps, capable of transmitting up to 40km over single-mode fiber. They are integral to 25G Ethernet switches, routers, NICs, and storage networking devices, effectively tackling the challenges of 5G millimeter wave front-haul.
25G DWDM SFP28 optical modules are designed to meet the demands of 5G front-haul services, featuring EML+APD technology with a top speed of 25.78125Gbps and a transmission distance of up to 10km over single-mode fiber. They are extensively deployed in 25G Ethernet and CPRI/eCPRI links over single-mode SMF, tightly packing wavelengths to enhance existing fiber network bandwidth.
25G LWDM SFP28 optical modules leverage high-performance, low-cost DML lasers to provide 12-channel multiplexing, offering advantages over comparable 25G front-haul solutions in 5G applications by addressing large dispersion in 25G CWDM modules and high laser costs in 25G DWDM SFP modules. They ensure stable transmission while economizing on 5G front-haul, thus presenting a stable and cost-efficient solution for 5G front-haul networks.
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