In the field of optical fiber communication, the SFP-10G-BX bidirectional optical module has become an ideal choice in scenarios with tight optical fiber resources due to its unique single-fiber bidirectional transmission capability. This article will deeply analyze its technical principles, application scenarios and selection points to help users fully understand this efficient solution.
Core Features
SFP-10G-BX is a 10G optical module based on WDM (wavelength division multiplexing) technology, which realizes bidirectional data transmission through a single optical fiber. Its core features are as follows:
Single-fiber bidirectional transmission:
SFP-10G-BX module adopts a dual-wavelength design (such as 1310nm/1490nm or 1490nm/1550nm) inside, and the transmitter (TX) and the receiver (RX) use different wavelengths, and the signal transmission and reception are completed through paired modules at both ends of the optical fiber.
Transmission distance:
Depending on the model, 10G BIDi SFP+ supports distances of 10km (BX10), 20km (BX20), 40km (BX40), etc., suitable for short-distance to medium-long-distance scenarios.
Fiber type:
Only single-mode fiber (SMF) is required, compatible with G.652 and G.657 standards, with thinner wire diameter and lower wiring cost.
Power consumption and compatibility:
Typical power consumption of SFP-10G-BX is ≤1W, supports hot plugging, complies with SFF-8472 protocol, and is compatible with mainstream brand switches and routers.
Typical Application Scenarios
Scenario with limited fiber resources:
In scenarios where the number of existing fiber lines is insufficient or expansion is difficult (such as urban pipelines and old buildings), single fiber is used to replace traditional dual fiber, saving 50% of fiber core resources.
Enterprise network and campus network:
Applicable to scenarios such as interconnection between headquarters and branches, data center access layer, etc., to simplify wiring complexity.
Telecom access network:
In FTTH (fiber to the home) or 5G fronthaul network, efficient connection between user end and central end is achieved through single fiber.
Industrial Internet of Things:
Supports -40°C~85°C industrial temperature models (such as SFP-10G-BX-I) to meet communication needs in harsh environments.
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Advantages
Cost Optimization:
Reduce the use of optical fiber, reduce wiring materials and construction costs.
No need to deploy additional optical fiber distribution frames, saving machine room space.
Deployment Flexibility:
Support point-to-point (P2P) topology, suitable for star, chain and other networking structures.
When mixed with ordinary dual-fiber modules, the capacity can be expanded through the wavelength division multiplexer.
Convenient maintenance:
The scope of optical fiber troubleshooting is reduced and the operation and maintenance efficiency is improved.
SFP-10G-BX optics are used in pairs, and the wavelengths at both ends are strictly matched to reduce the risk of configuration errors.
Selection Considerations
Wavelength pairing:
It is necessary to ensure that the wavelengths of SFP-10G-BX modules at both ends of the link are complementary (e.g. TX 1310nm/RX 1490nm on one end and TX 1490nm/RX 1310nm on the other end).
Transmission distance matching:
Select models such as BX10/BX40 according to the actual distance to avoid signal attenuation due to over-distance.
Equipment compatibility:
Some brand equipment (such as Huawei and Cisco) may limit the speed or alarm for non-certified modules, so compatibility needs to be verified in advance.
Temperature adaptability:
Extended temperature models (such as commercial grade 0~70°C vs. industrial grade -40~85°C) need to be selected for outdoor or industrial scenarios.
Summary
The SFP-10G-BX module uses innovative single-fiber bidirectional technology to significantly reduce the cost of optical fiber deployment while ensuring 10Gbps high-speed transmission. It is especially suitable for scenarios where optical fiber resources are tight or the architecture needs to be simplified. With the popularization of 5G and industrial Internet, its flexibility and economy will further promote its application in edge computing, smart cities and other fields. When selecting a model, users need to focus on wavelength pairing, transmission distance, and device compatibility to achieve optimal network performance and return on investment.
