Against the backdrop of the rapid development of the digital economy, the demand for optical communication in scenarios such as Data Center Interconnection (DCI), 5G bearer networks, and backbone network upgrades is evolving toward the direction of “higher bandwidth, longer distance, and lower cost”.

However, traditional 100G optical modules often face the dilemma of “incompatibility between distance and cost” in long-distance transmission scenarios. To achieve 80KM transmission using conventional external modulation schemes, complex amplification and dispersion compensation components are required, which not only drive up hardware costs but also increase device power consumption and deployment complexity.

On the other hand, low-cost solutions struggle to break through the 40KM transmission distance limit. Against this backdrop, the emergence of the 100G BIDI 80KM optical module is like a “game – changing remedy”. With its unique technical design and outstanding performance, it has redefined the cost – effectiveness standard for long – distance optical transmission.​

Technological Breakthroughs: Single – Fiber Bidirectional + Long – Distance Optimization to Address Core Industry Pain Points​

The core competitiveness of the 100G BIDI 80KM optical module stems from the in – depth integration of two key technologies: “bidirectional transmission” and “long – distance adaptation”. It adopts a single – fiber bidirectional (BIDI) architecture.

By integrating transmit and receive channels of different wavelengths in a single optical fiber, compared with the traditional dual – fiber solution, it directly reduces the occupation of optical fiber resources by 50%.

For backbone networks and inter – city DCI scenarios where optical fiber resources are scarce, this means that bandwidth can be upgraded without laying additional new optical fibers, significantly reducing infrastructure costs and construction cycles.​

In terms of long – distance transmission capability, the module achieves stable 80KM transmission without relays through three major technical optimizations.

Firstly, it uses a high – power DFB laser, which increases the transmit optical power to more than + 5dBm, effectively combating attenuation losses during optical fiber transmission.

Secondly, it integrates a high – precision dispersion compensation unit, which dynamically adapts to the dispersion characteristics of G.652/G.655 optical fibers, avoiding “intersymbol interference” of signals during long – distance transmission. Thirdly, it is equipped with a low – noise APD detector, with a receive sensitivity as low as – 28dBm. Even for weak optical signals, it can accurately parse data, further extending the transmission distance.​

In addition, the module also enhances its overall competitiveness through “low – power design” and “flexible adaptability”. It adopts advanced CMOS process chips, resulting in low operating power consumption, which is 30% lower than that of traditional long – distance modules, meeting the “green and energy – saving” needs of data centers.

It is compatible with existing device slots, enabling upgrades without replacing hardware, thus significantly reducing customers’ transformation costs and time costs.​

Scene Implementation: From DCI to 5G Bearer Networks, Empowering Digital Transformation Across Multiple Industries​

The performance advantages of the 100G BIDI 80KM optical module make it highly adaptable in multiple key scenarios, serving as a “core engine” for promoting the digital transformation of industries.​

In the Data Center Interconnection (DCI) scenario, the bandwidth demand between inter – city data centers is growing at a rate of 40% per year. The 80KM transmission distance perfectly covers the typical needs of “intra – city active – active” and “inter – city disaster recovery”.

When a leading Internet company deployed an inter – city DCI link, it replaced the traditional dual – fiber module with the 100G BIDI 80KM module. This not only reduced the number of optical fibers used from 2 cores to 1 core but also eliminated the need for deploying Dispersion Compensation Modules (DCM).

The hardware cost per link was reduced by 25%, and the transmission delay was controlled within 1ms, meeting the requirement for real – time data synchronization.​

In the 5G bearer network scenario, the wide – coverage feature of 5G base stations requires the bearer network to have “long – distance and large – bandwidth” transmission capabilities.

Especially in remote areas such as suburbs and counties, the distance between base stations and the core network often exceeds 50KM. When an operator built a 5G county – level bearer network, it used the 100G BIDI 80KM module to build a backhaul link. This enabled the access of base stations within 80KM without deploying relay equipment.

Compared with the traditional solution, the construction cost per kilometer of the link was reduced by 18%. Moreover, the reduced device power consumption eliminated the need for additional expansion of the power supply system in the base station computer room, further reducing operation and maintenance costs.​

In the backbone network edge scenario, with the advancement of the “Eastern Data and Western Computing” project, the data flow between edge nodes and core nodes of the backbone network is increasing day by day.

The 100G BIDI 80KM module can serve as a “bandwidth supplement” for the edge of the backbone network, enabling efficient data interaction between edge nodes and core nodes. When a provincial radio and television network upgraded the edge of its backbone network, it deployed this module, increasing the uplink bandwidth of edge nodes from 40G to 100G.

The transmission distance covers all core nodes within 80KM, and the cost per port is 20% lower than that of traditional 100G long – distance modules, effectively alleviating the bandwidth pressure at the edge of the backbone network.​

Industry Value: Promoting “Cost Reduction and Efficiency Improvement” in Optical Communication and Accelerating the Implementation of the Digital Economy​

From the perspective of industry development, the launch of the 100G BIDI 80KM optical module is not only a product – level technological upgrade but also a in – depth response to the “cost reduction and efficiency improvement” trend in the optical communication industry.

In today’s world where the demand for bandwidth in the digital economy continues to rise, “how to achieve long – distance transmission with higher bandwidth at a lower cost” has become a common issue for the entire industry.

The module provides the industry with a “cost – effective” long – distance transmission solution by reducing the consumption of optical fiber resources through “single – fiber bidirectional”, lowering component costs through “integrated design”, and reducing operation and maintenance expenses through “low power consumption”.​

At the same time, the popularization of this module will further promote the coordinated development of the optical communication industry chain. From upstream laser and detector chip manufacturers, to mid – stream module packaging enterprises, and then to downstream operators and Internet companies, an industrial ecosystem centered around “100G BIDI long – distance technology” will be formed.

This will accelerate the iteration of related technologies and further reduce costs, ultimately benefiting more industry customers.​

In the future, with the development of technologies such as 5.5G and AI large models, the bandwidth demand for optical communication will move toward 400G and 800G. However, as the current mainstream bandwidth demand, 100G and its long – distance transmission solutions will still play an important role for a long time to come.

With its unique technical advantages and scenario adaptability, the 100G BIDI 80KM optical module is bound to become a “key infrastructure” for promoting the implementation of the digital economy and inject stronger impetus into the digital transformation of various industries.​