FiberQ FiberQ

Optical Transceivers 25G/32G SFP28 Module Manufacturer & Exporter

Industry-Leading High-Density Optical Interconnect Solutions Engineered for Enterprise Data Centers, 5G Fronthaul Networks, and High-Frequency Storage Area Networks (SAN).

Featured SFP28 Optical Transceivers

High-performance 25G and dual-rate transceivers optimized for mission-critical optical paths

Cisco SFP-10/25G-CSR-S Compatible
Cisco SFP-10/25G-CSR-S Compatible 10/25G CSR SFP28 850nm 400m Duplex LC MMF Optical Transceiver Module
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Duplex LC MMF Optical Transceiver Module
Duplex LC MMF Optical Transceiver Module Multimode 850nm 25G SFP28 SR 100m
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Single Mode 1310nm 25G SFP28 LR
Single Mode 1310nm 25G SFP28 LR 10km Duplex LC SMF Optical Transceiver Module
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SMF 1310nm 25G SFP28 ER
SMF 1310nm 25G SFP28 ER 40km Duplex LC Single Mode Fiber Optical Transceiver Module
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Bidirectional Single Mode SFP28 25G BiDi
Bidirectional Single Mode SFP28 25G BiDi 10km Simplex LC SMF Optical Transceiver Module
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Simplex LC Single Mode SFP28 25G BiDi
Simplex LC Single Mode SFP28 25G BiDi 20km Bidirectional SMF Optical Transceiver Module
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1270nm/1310nm Bidirectional Single Fiber
1270nm/1310nm Bidirectional Single Fiber 25G BiDi SFP28 40km Simplex LC SMF Optical Transceiver Module
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Single Mode 25G CWDM SFP28
Single Mode 25G CWDM SFP28 Transceiver 10km Duplex LC SMF Optical Transceiver Module
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The Architectural Evolution: Migrating to 25G/32G SFP28 Interconnects

The rapid expansion of cloud infrastructures, high-frequency financial trading, and mobile network densification has pushed 10Gbps SFP+ form factors to their physical limits. As enterprise core switches and SAN switches undergo generational upgrades, SFP28 (Small Form-Factor Pluggable 28) has emerged as the premier standard. Leveraging single-lane 25Gbps/28Gbps serialization/deserialization (SerDes) technology, it delivers 2.5 times the bandwidth of traditional SFP+ while maintaining backplane compatibility and identical physical dimensions.

Furthermore, the integration of 32G Fibre Channel (FC) within storage network architectures provides the optimal throughput necessary to eliminate performance bottlenecks in NVMe storage clusters and flash arrays. Compared to multi-lane alternatives like 40G QSFP+, SFP28 reduces per-port power consumption, increases front-panel density, and scales dynamically to support next-generation 50G and 100G migration pathways.

Why Enterprise Infrastructure Standardization Favors SFP28:

  • Optimal Lane Efficiency: Single-lane 25G physical channel architecture minimizes cross-talk and path loss.
  • Reduced OPEX: Substantially lower thermal profiles and power draw (typically <1.0W per module) compared to QSFP transceivers.
  • Native Compatibility: Perfect alignment with 5G eCPRI fronthaul specifications and modern multi-rate top-of-rack (ToR) switches.
  • High Density: Standard SFP form factor allows up to 48 ports in a single 1RU switch panel.

Deep Technical Specifications & Component Engineering

Under the hood of FiberQ's carrier-grade optical transceiver modules

Optical Transmitter Technologies

  • VCSEL Transmitters (850nm): Leveraged in short-range (SR) applications up to 100m over OM3 and 400m over OM4/OM5, incorporating advanced high-reliability multi-mode laser arrays.
  • DFB (Distributed Feedback) Lasers: Standardized for mid-range transmission (LR, 10km) and CWDM/DWDM systems to ensure tight spectral width and low dispersion penalties.
  • EML (Electro-absorption Modulated Lasers): Embedded in long-reach (ER, 40km) modules, facilitating high extinction ratios and minimal chirp under high-speed operation.

Diagnostic & Interface Standards

  • SFF-8472 Compliance: Integrated Digital Diagnostics Monitoring (DDM/DOM) allows real-time access to operational metrics (temperature, voltage, TX bias, optical power).
  • SFF-8431 & SFF-8432 Standards: Mechanical and electrical compatibility with legacy SFP+ hosts, allowing seamless backwards compatibility.
  • Built-in CDR (Clock and Data Recovery): High-precision internal dual-CDR chips lock at 24.3Gbps to 28.1Gbps to suppress electrical jitter.

Advanced Wavelength Engineering

  • BiDi (Bidirectional) Transceivers: Utilizing 1270nm/1330nm or 1270nm/1310nm multiplexing over single-mode fiber, doubling physical fiber capacity.
  • CWDM/DWDM/LWDM Grid Integration: Enables multi-channel logical links over a single physical link, optimizing transport efficiency in telecom backhauls.
  • Enhanced Thermal Design: Industrial-grade temperature tolerance options (-40°C to +85°C) specifically designed for unconditioned 5G cell sites.

China Sourcing Advantages & Industrial scale of FiberQ Photonics

Established in 2015, FiberQ Photonics Technology Co., Ltd. has constructed an advanced manufacturing ecosystem that integrates R&D, structural precision assembly, and multi-protocol verification. Operating out of our state-of-the-art 12,600㎡ production facility, our processes conform to strict ISO9001:2015 standards, supplying high-performance optical communication products to major tier-one networks globally.

Our supply chain resilience is guaranteed by structured procurement agreements with approximately 1,450 trusted supply chain partners, ensuring access to top-tier TOSA, ROSA, and optical sub-assemblies. Leveraging 12 years of industry engineering experience and 6 years of export expertise, our annual export revenue has consistently reached around USD 9.5 million. Our clients include global hyperscale data centers, telecommunications carriers, and large-scale industrial network integrators in North America, Europe, Japan, and Southeast Asia.

12,600㎡
Production Area
62
QC Inspectors
240
R&D Engineers
180+
Annual New Products

Automated Testing & End-to-End Quality Assurance

Ensuring 100% host compatibility and zero-field failure rates across global networks

Reliability in high-speed networks starts at the component level. Every FiberQ SFP28 transceiver undergoes a comprehensive series of hardware checks, compatibility scans, and environmental stressors before leaving our cleanrooms:

  • Automated Optical Performance Testing: Real-time eye diagram analysis, optical power output measurements, and side-mode suppression ratio (SMSR) testing using high-frequency oscilloscopes.
  • Interferometric Inspection: Sub-micron checks of the LC physical contact surface geometries to prevent back reflection and core insertion loss.
  • High-Temperature Stress Aging: Modules undergo continuous burn-in testing under full load inside customized environmental chambers (up to 85°C) to screen out premature component infant mortality.
  • Multi-Vendor Compatibility Testing: Verification of EEPROM coding for plug-and-play operation in switches from Cisco, Juniper, Arista, Huawei, Dell, HPE, and other leading manufacturers.

Our dedicated team of 62 experienced quality inspectors works alongside automated optical validation platforms to maintain full product traceability. This structured testing workflow translates directly to an exceptionally low RMA rate (<0.05%), guaranteeing stable operation and long-term signal integrity across complex network links.

Compatibility Certification Program:

We store and maintain an active matrix of over 200 mainstream network host switches in our laboratory, ensuring that all custom microcode revisions are tested directly on native hardware platforms prior to shipment.

Macro Industry Solutions & Global Integration

Scalable optical transport configurations mapped to modern application topologies

Hyperscale & Enterprise Data Centers

Supporting Spine-Leaf topologies where standard 10G connections cannot keep up with east-west traffic flow. SFP28 SR/LR modules enable high-density cross-connect links at 25G speeds, optimizing bandwidth-to-power performance across high-speed switch backplanes.

  • Ultra-low latency VCSEL optimization.
  • High compatibility with Top-of-Rack (ToR) and Core infrastructure.
  • Hot-pluggable designs minimize maintenance downtime.

5G Fronthaul & Open RAN Deployments

5G baseband stations require low-latency, high-bandwidth communication between the Active Antenna Unit (AAU) and the Distributed Unit (DU). FiberQ's 25G BiDi and CWDM transceivers support long-reach optical runs with low thermal footprints, ideal for harsh outdoor environments.

  • Industrial-grade operating range (-40°C to 85°C).
  • BiDi single-fiber solutions reduce fiber lease costs by 50%.
  • Tight wavelength stability under fluctuating weather conditions.

32G Fibre Channel SAN Architectures

Designed specifically for data-intensive storage networks. Operating at 28.05Gbps line rates, our 32G FC SFP28 modules support massive data throughput to prevent interface bottlenecks in NVMe flash arrays and automated backup servers.

  • Fully compatible with Brocade, Cisco MDS, and QLogic Host Bus Adapters (HBAs).
  • High optical power budget ensures clean data transfer over structured optical cabling.
  • Optimized for mission-critical disaster recovery networks.

Technical FAQ & Procurement Insights

Crucial technical answers to help network architects and procurement managers make informed purchasing decisions

What is the main physical difference between 10G SFP+ and 25G SFP28 transceivers?

While they share the same physical form factor, layout dimensions, and LC optical interfaces, the electrical interface of SFP28 is designed to run at 25 Gbps per lane, whereas SFP+ is capped at 10 Gbps. SFP28 modules incorporate upgraded transmitter components (such as high-speed VCSELs and DFB lasers) and high-performance clock-and-data recovery (CDR) chips to handle the increased high-frequency signal integrity requirements over electrical backplanes.

Can a 25G SFP28 optical module operate at 10G speed?

Yes, many SFP28 transceivers (specifically designated dual-rate 10G/25G modules, such as our Cisco SFP-10/25G-CSR-S compatible transceivers) support multi-rate configurations. These modules can automatically auto-negotiate or be hard-coded via the host switch OS to run at 10Gbps or 25Gbps, providing excellent protection for legacy deployments undergoing phased optical infrastructure upgrades.

Is Forward Error Correction (FEC) required to achieve the rated link distance on 25G links?

Yes, under the IEEE 802.3by standard, FEC (specifically RS-FEC or FC-FEC) is generally required on the host system to achieve the full transmission distance on longer fiber spans (such as 25G SR beyond 70 meters on OM3, or LR links up to 10km). Enabling FEC on the host switch compensates for transmission bit errors, maintaining a reliable bit error rate (BER) of less than 1E-12.

What customization options does FiberQ offer for global OEM/ODM partners?

Leveraging our robust engineering team of 240 R&D experts, we support complete product customization. This includes custom EEPROM compatibility coding (to guarantee compatibility with specialized host switches), wavelength adjustments for CWDM/DWDM/LWDM grids, specific optical link budget tuning (e.g., custom ER/ZR reaches), and extended-temperature ruggedization (Industrial Temp: -40°C to +85°C) for outdoor and industrial environments.

Browse Our Complete SFP28 Product Range

Select from our high-performance single-mode, multi-mode, and multi-wavelength SFP28 modules

Duplex LC SMF 25G SFP28 CWDM
Duplex LC SMF Optical Transceiver Module Single Mode 25G SFP28 CWDM Transceiver 30km
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Duplex LC SMF SFP28 25G DWDM
Duplex LC SMF Optical Module Single Mode SFP28 25G DWDM Transceiver 10km
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Single Mode Duplex LC SMF SFP28 25G LWDM
Single Mode Duplex LC SMF SFP28 Optical Module 25G LWDM Transceiver 40km
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Cisco SFP-25G-SR-S Compatible 100m
Cisco SFP-25G-SR-S Compatible Duplex LC MMF 850nm 25G SFP28 100m Optical Transceiver Module
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Cisco SFP-25G-SR-S Compatible 850nm
Cisco SFP-25G-SR-S Compatible Multimode Duplex LC MMF 850nm 25G SFP28 Optical Transceiver 100m
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Cisco SFP-10/25G-CSR-S Compatible 100m MMF
Cisco SFP-10/25G-CSR-S Compatible Dual rate 10G/25G SFP28 Transceiver 100m MMF Optical Transceiver
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Multimode 850nm 25G SFP28 Transceiver 300m
Multimode 850nm 25G SFP28 Transceiver 300m DDM MMF LC Optical Transceiver Module
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Cisco SFP-10/25G-CSR-S Compatible 400m
Cisco SFP-10/25G-CSR-S Compatible Dual-rate 10G/25G SFP28 Transceiver 400m MMF Optical Transceiver Module
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All 25G/32G SFP28 Module Products