Driven by 5G, cloud computing and digital transformation, optical modules, as core components of high-speed communications, are evolving towards higher performance and longer distances. With its leading technology, ETU-LINK has launched 25G SFP28 ZR 80KM dual-fiber optical module and 25G SFP28 BIDI ZR 80KM single-fiber optical module , which have become the preferred solutions for data centers, metropolitan area networks and 5G fronthaul fields with their 80km long-distance transmission capability and flexible networking characteristics. This article will deeply analyze the technical advantages, core differences and application value of these two products.

Product Advantage: Unique Value of Dual Fiber and BIDI

ETU-LINK 25G SFP28 ZR 80KM

1. High Speed and Low Latency : Supports 25.78Gb/s rate and achieves transmission latency as low as microseconds by optimizing signal processing algorithms to meet the real-time requirements of data centers.

2. Ultra-long Distance Coverage : Using EML lasers and SOA optical amplifiers, combined with G.652 single-mode optical fiber, the transmission distance reaches 80km, suitable for inter-metropolitan backbone networks.

3. Industrial-grade Reliability : Supports wide operating temperature range of -40°C to 85°C, adapts to extreme environments, and hot-swappable design simplifies operation and maintenance management.

ETU-LINK 25G SFP28 BIDI ZR 80KM

1. Single-fiber Bidirectional Transmission : Based on WDM wavelength division multiplexing technology, single-fiber bidirectional communication is achieved through 1295nm/1309nm dual wavelengths, saving 50% of optical fiber resources and reducing wiring costs.

2. Low Power Consumption and High Efficiency : Commercial-grade power consumption is less than 2.2W, industrial-grade power consumption is less than 2.8W, taking into account both performance and energy efficiency.

3. Flexible Deployment : Simplex LC interface design is suitable for scenarios with limited optical fiber resources, such as base station interconnection in densely populated urban areas.

（25G SFP28 BIDI 80KM Eye Diagram）

Authoritative certification and technological breakthroughs

ETU-Link's 25G SFP28 80km dual-fiber and BIDI technology has passed the national-level "Optical Module Key Technology Research and Development" scientific and technological achievement evaluation and was rated as "domestic leading" . With its high-speed and long-distance transmission characteristics, it provides a solid guarantee for the large-scale coverage of 5G communication networks.

Analysis of the Core Differences Between Dual-fiber and BIDI

Application Scenario: Driving Efficient Interconnection in Multiple Fields

5G base station fronthaul : The BIDI module connects the base station and the equipment room through a single fiber, solving the problem of fiber resource shortage and supporting CRAN architecture deployment.

Data Center Interconnect (DCI) : Dual-fiber modules enable data synchronization across 80km, ensuring low latency for remote disaster recovery and cloud services.

Smart City and Industrial Internet : Dual-fiber modules are used for private networks such as power monitoring and traffic signal control; BIDI modules support flexible networking in areas with dense concentrations of smart devices.

The launch of 25G 80km dual-fiber and BIDI optical modules marks a double breakthrough for ETU-LINK Optical Communications in the fields of long-distance transmission and resource optimization. In the future, with the iteration of technology, ETU-LINK will continue to drive the upgrade of optical networks with innovation to provide global users with a more efficient and reliable connection experience.