25G CWDM SFP28 ER 1290nm 40km

Q: Are you a manufacturer or a trading company?

A: Since 2013, we have been a manufacturer specializing in telecommunications equipment. We are ISO9001:2015 certified, recognized as a National High-Tech Enterprise, and honored as an Integrity Enterprise.

Q: What is the lead time for samples? What are the shipping costs for samples? How soon can we receive the samples?

A: Samples are usually prepared for shipment within 5-7 working days. Our long-term logistics partners will provide you with economical shipping costs. Samples are typically shipped via international couriers like DHL, UPS, TNT, FEDEX, and can be received within 3-5 days.

Question: How do we place an order?

Answer: Please send your order to sales@walsun.com, and you’re welcome to call our sales hotline at 0755-23007456.

Q: Can we have our logo or company name on our products or packaging?

A: Yes, we offer OEM and ODM services; your logo or company name can be applied to the products through hot stamping, printing, embossing, UV coating, silk-screen printing, or sticker labeling.

Q: What are the various application scenarios for different 25G SFP28 transceiver modules?

A: Standard 25G SFP28 optical modules (SR, LR, ER, and BiDi) are primarily used for interconnecting servers, switches, and routers in data centers.

The 25G CWDM SFP28 optical module is a single-mode, dual-fiber CWDM module with a maximum speed of 25.78125Gbps and can transmit up to 40km over single-mode fiber. It is mainly applied in 25G Ethernet switches, routers, Network Interface Cards (NICs), and storage networking devices, effectively addressing current 5G millimeter-wave front-haul challenges.

The 25G DWDM SFP28 optical module is designed to meet the requirements of 5G pre-transmission services. Employing an EML+APD scheme, it achieves a maximum speed of 25.78125Gbps and can transmit up to 10km over single-mode fiber. It is widely used in 25G Ethernet and CPRI/eCPRI links over single-mode SMF, tightly packing wavelengths to augment the bandwidth of existing fiber networks.

The 25G LWDM SFP28 optical module adopts high-performance, low-cost DML lasers to provide 12-channel multiplexing, offering advantages over comparable 25G front-haul products in 5G applications by compensating for the large dispersion of 25G CWDM modules and the high cost of lasers in 25G DWDM SFP modules. While ensuring stable transmission, it economizes on 5G front-haul, thus serving as a stable and cost-effective solution for 5G front-haul networks.