Xelivor Xelivor

Optical Transceivers 1.25G SFP Module Factory & Supplier

High-Performance Gigabit Fiber Solutions Engineered for Enterprise, Telecom, and Industrial Connectivity Infrastructure.

Product Catalog

1.25G SFP Optical Transceivers

Explore our core product lineup of premium 1.25G SFP transceivers, designed for absolute compatibility and optimized long-reach network stability.

1310nm-TX/1550nm-RX Simplex LC Bidirectional SFP

1310nm-TX/1550nm-RX Simplex LC Bidirectional Fiber Optic Transceivers Module Single Mode 1G Bidi SFP 20km

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Multimode Dual LC Optical Transceiver MMF 850nm 1.25G SFP

Multimode Dual LC Optical Transceiver MMF 850nm 1.25G SFP Fiber Optic Module 550m

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Duplex LC SMF Fiber Optic Transceiver Single Mode 1310nm 1.25G SFP

Duplex LC SMF Fiber Optic Transceiver Single Mode 1310nm 1.25G SFP Optical Module 10km

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1000BASE-ZX Mini Gbic Fiber Optical Transceiver Single Mode 1550nm 1G SFP

1000BASE-ZX Mini Gbic Fiber Optical Transceiver Single Mode 1550nm 1G SFP Module 80km

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1000BASE-SX SFP Ethernet Module 850nm 550m Duplex LC

1000BASE-SX SFP Ethernet Module 850nm 550m Duplex LC MMF Fiber Optical Transceiver

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1000BASE-T SFP 1310nm 2km Duplex LC Transceiver Module

1000BASE-T SFP 1310nm 2km Duplex LC MMF Optical Fiber Transceiver Module

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1000BASE-LX/LH SFP Module 1310nm 10km DOM Duplex LC

1000BASE-LX/LH SFP Module 1310nm 10km DOM Duplex LC SMF Optical Transceiver

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1000BASE-LX/LH SFP Transceiver 1310nm 20km Duplex LC

1000BASE-LX/LH SFP Transceiver 1310nm 20km Duplex LC SMF Optical Module

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White Paper Focus

The Industrial & Global Market Paradigm of 1.25G SFP Modules

In the rapid transition toward high-bandwidth architectures such as 100G, 400G, and 800G, the legacy and significance of 1.25G SFP (Small Form-factor Pluggable) modules remain absolute. Often referred to as the "workhorse of global telecom," the 1.25Gbps rate remains the primary architecture for vast swathes of edge routing, rural broadband networks, access layers, FTTH (Fiber-to-the-Home), and industrial control networks. The maturity of the 1000BASE standards ensures unparalleled transmission stability, extremely low power consumption, and highly cost-effective optical links over both multi-mode and single-mode fiber media.

Across the globe, industrial automation networks, transportation telemetry, municipal Smart Cities, and local government networks heavily depend on the SFP MSA (Multi-Source Agreement) form factor. By utilizing 1.25G modules, system integrators avoid high optical component upgrades, and instead extend the lifespan of installed enterprise switches and routers. This cost efficiency, combined with high-grade Digital Diagnostic Monitoring (DOM/DDM), permits network administrators to maintain live monitoring of laser telemetry, optical temperature, and Rx/Tx power, preventing network faults before they manifest.

Universal Legacy Support

Fully compatible with standard IEEE 802.3z standards and multi-vendor network platforms. Provides seamless drop-in upgrades without changing cabling infrastructure.

Ultra-Long Reach Options

Extending networks up to 160km over single-mode fiber with optimized dispersion compensation and highly reliable 1550nm EML or DFB laser sources.

Minimal Thermal Profile

Operates at low power-consumption margins (<1W typical), ensuring lower thermal dissipation and extending the lifespan of core access switches.

8+
Years Industry Experience
USD 12M+
Annual Export Revenue
68
R&D Engineers
850+
Supply Chain Partners
Factory Advantage

Why Global Enterprises Source from Xelivor Optoelectronics

Xelivor Optoelectronics Co., Ltd. is a pioneering manufacturer specializing in high-performance optical transceivers and integrated fiber connectivity solutions. Established in 2016, our production operations are housed within a modern 386 m² cleanroom facility. We operate under stringent quality management principles, delivering customized OEM/ODM services to distributors, system integrators, and telecom operators across North America, Europe, Southeast Asia, the Middle East, and South America.

Our competitive advantage lies in our manufacturing efficiency and advanced supply chain integration. By managing over 850 strategic raw material suppliers, we guarantee consistent component sourcing (including high-grade TOSA, ROSA, and BOSA optical sub-assemblies). This allows us to buffer inventory effectively, ensuring rapid order fulfillment and stable pricing even during global component shortages.

Rigorous E-E-A-T Quality Standards

We deploy a specialized QA team of 32 expert inspectors. Each module undergoes incoming inspection, real-time wave monitoring, optical spectrum analysis, full-cycle thermal aging tests, and multi-platform compatibility validation.

Tailored OEM/ODM Customization

Whether you require custom EEPROM code writing for proprietary switches, customized labels, bespoke housing layouts, or eco-friendly customized packaging, our R&D engineers adapt production to your design specifications.

Agile Global Delivery

Leveraging the world-class logistics infrastructure of our China-based export hub, we ship high-volume orders securely, reducing transit times to key global markets to a fraction of traditional lead times.

Application Profiles

Localized Deployment & Networking Use Cases

1.25G SFP transceivers serve critical functions across multiple localized settings. Here are the primary industries implementing these modules:

Fiber-To-The-Home (FTTH) & Access Networks

BiDirectional (BiDi) 1.25G SFP modules are widely deployed by telecom service providers. By utilizing wavelength-division multiplexing (WDM) via 1310nm/1550nm Tx/Rx paths over a single fiber, they effectively halve the cabling infrastructure costs for rural and suburban internet expansion projects.

Industrial Substation Automation

In high-voltage power grids and factory floors, copper cabling is highly susceptible to electromagnetic interference (EMI). Industrial-grade 1.25G SFP transceivers, designed to withstand extreme operating temperature ranges (-40°C to 85°C), provide noise-free fiber backbones for industrial PLCs and remote terminal units.

Enterprise campus backbone extensions

Universities, hospitals, and corporate parks require fast, low-latency links across buildings. Utilizing 1000BASE-SX multimode modules over existing OM2/OM3 fiber backbones offers an extremely stable 550-meter gigabit connection at minimal cost.

Procurement Insights

Navigating Global SFP Sourcing: Key Technical Metrics

When sourcing 1.25G SFP modules for large-scale enterprise deployments, procurement managers must evaluate parameters beyond basic pricing. Understanding technical nuances directly influences operational uptime and Total Cost of Ownership (TCO):

  • Optical Path Loss Budgets: Crucial for long-distance runs (e.g., 80km to 120km). Sourcing modules with high-sensitivity APD (Avalanche Photodiode) receivers prevents signal degradation.
  • DDM/DOM Diagnostic Integration: Compliant with SFF-8472, Digital Diagnostic Monitoring enables real-time parameters tracking, covering Tx power, Rx sensitivity, transceiver temperature, and voltage fluctuations.
  • Multi-Vendor Coding & Compatibility: Strict switch firmware checks require precise EEPROM coding to prevent "Unsupported Transceiver" flags. Xelivor tests code signatures for over 50 mainstream networking brands.
  • Laser Classification Safety: Ensuring all optical transceivers are Class 1 Laser Product compliant, protecting installation engineers and field operators during network staging and deployment.

The global trend shows that despite higher speeds coming online, the demand for 1.25G SFPs is growing in IoT gateways and edge-computing nodes. Because modern smart-sensors and localized automation controllers do not generate terabytes of data, a stable, low-power 1G connection is optimal. As a result, maintaining a robust pipeline of high-quality 1.25G SFP modules remains vital for standard networking suppliers.

FAQ Section

Frequently Asked Questions: Technical Deep-Dive

Get authoritative answers to the most common configuration, selection, and purchasing questions regarding 1.25G SFP modules.

Q1: What is the primary difference between 1000BASE-SX, LX, and ZX SFP modules?
These terms define the physical layer standards for Gigabit Ethernet over fiber. 1000BASE-SX operates at 850nm over multimode fiber (MMF) for short distances up to 550m. 1000BASE-LX/LH operates at 1310nm over single-mode fiber (SMF) up to 10km or 20km. 1000BASE-ZX operates at 1550nm over SMF for long-haul networks up to 80km, while specialized EZX extends this range up to 120km or 160km.
Q2: Can I plug a 1.25G SFP transceiver into a 10G SFP+ port?
Generally, yes, but it depends on your switch hardware and configuration. Many SFP+ ports are dual-speed and can auto-negotiate down to 1G speed when a 1.25G SFP module is inserted. However, you must manually configure the port speed to 1000Mbps (1G) in the switch operating system (CLI) to ensure stable communication.
Q3: Why is DDM/DOM critical in modern optical transceivers?
Digital Diagnostic Monitoring (DDM) provides real-time access to operational parameters like internal temperature, supply voltage, laser bias current, transmitted optical power, and received optical power. This enables proactive monitoring, isolates link failures quickly, and allows engineers to predict laser degradation before a link fails entirely.
Q4: What are the advantages of BiDi (Bidirectional) SFP modules?
BiDi SFPs transmit and receive signals over a single strand of fiber by utilizing two different wavelengths (e.g., 1310nm-TX/1550nm-RX and vice-versa). This technology maximizes existing fiber infrastructure, effectively cutting fiber installation costs in half and simplifying deployment across tight conduit routes.
Q5: How does Xelivor guarantee compatibility with major brands?
We operate a specialized testing lab with over 150 current switch models from brands such as Cisco, Juniper, HPE, Huawei, Arista, and Dell. Our engineering team custom-codes the EEPROM of each module to match the required host signature and tests each unit directly in target switches before packaging and shipping.
Long Range & Specialized Range

Extended Distance & Specific 1.25G SFP Modules

High-spec options designed for extreme distances, carrier backhauls, and legacy network preservation.

1000BASE-EX SFP 1550nm 40km Duplex LC

1000BASE-EX SFP 1550nm 40km Duplex LC SMF Fiber Optical Transceiver Module

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1000BASE-ZX SFP 1550nm 80km DOM Duplex LC SMF

1000BASE-ZX SFP 1550nm 80km DOM Duplex LC SMF Optical Transceiver Module

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1000BASE-EZX SFP 1550nm 100km Duplex LC SMF

1000BASE-EZX SFP 1550nm 100km Duplex LC SMF Optical Transceiver Module

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1000BASE-EZX SFP Transceiver 1550nm 120km DOM Duplex LC

1000BASE-EZX SFP Transceiver 1550nm 120km DOM Duplex LC SMF Fiber Optical Module

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1000BASE-ZXC SFP Module 1550nm 160km Duplex LC SMF

1000BASE-ZXC SFP Module 1550nm 160km Duplex LC SMF Fiber Optical Transceiver

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1000BASE-LX/LH SFP Transceiver 1310nm 10km DOM Duplex LC

1000BASE-LX/LH SFP Transceiver 1310nm 10km DOM Duplex LC SMF 1.25G Optical Module

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1000BASE-SX SFP 850nm 550m DOM Duplex LC

1000BASE-SX SFP 850nm 550m DOM Duplex LC MMF 1.25G Transceiver Module

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1000BASE-ZX SFP 1550nm 80km Duplex LC SMF 1.25G

1000BASE-ZX SFP 1550nm 80km Duplex LC SMF 1.25G Optical Transceiver Module

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Corporate Gallery

State-of-the-Art Production Facility

Inside our ISO-compliant manufacturing cleanrooms. Precision automation meets rigorous QA inspections to deliver enterprise-grade performance.

All 1.25G SFP Module Products