Optical Transceivers 100G/200G/400G Module Factory & Exporters

High-Speed Optical Modules Portfolio

Explore our elite range of QSFP28, QSFP56, and QSFP-DD high-speed transceivers engineered for unmatched throughput and zero-packet-loss reliability.

100G Base-t Ethernet Module 850nm 100m MPO QSFP28 Optical Transceiver

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QSFP28 100G Base-t 850nm 100m MPO MMF Fiber Optical Transceiver Module

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100GBASE-LR4 Duplex LC SMF Optical Transceiver Module Single Mode 1310nm 100G QSFP28 10km

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100GBASE-ER4 SMF QSFP28 Transceiver Duplex LC Single Mode 1310nm 100G Optical Module 40km

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100GBASE-ZR4 Duplex LC SMF Optical Module 1310nm Single Mode 100G QSFP28 Transceiver 80km

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200GBASE-SR4 Optical Transceiver Module MTP/MPO-12 MMF Multimode 850nm 200G QSFP56 100m

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400G DR4 QSFP-DD PAM4 1310nm 500m MTP/MPO-12 APC SMF Optical Transceiver Module

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Single Mode 400G CWDM QSFP-DD LR4 10km Duplex LC SMF Optical Transceiver Module

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Global Industry & Commercial Landscape of High-Speed Interconnects

The global telecommunication and hyper-scale enterprise computing architecture is currently undergoing a massive structural shift. Driven by artificial intelligence (AI) large language models (LLMs), high-performance computing (HPC), and 5G network densification, the bandwidth density demands within data centers have grown exponentially. This architectural transformation places optical transceivers at the critical bottleneck of system throughput.

As data transmission speeds transition from legacy 10G and 25G channels toward standard 100G, 200G, and 400G configurations, global operators require higher transceiver efficiency, lowered power footprint, and stringent compatibility. The implementation of technologies like PAM4 (Pulse Amplitude Modulation 4-Level) signaling and Silicon Photonics (SiPh) has become critical to maintaining performance integrity across short-reach (SR) and long-reach (LR/ER/ZR) fiber paths.

Key Market Drivers

AI Hardware Infrastructure: AI clusters powered by high-density GPU nodes require high-throughput fabric interconnections (such as InfiniBand and RoCE v2), driving the massive adoption of low-latency 200G QSFP56 and 400G/800G QSFP-DD modules.
Data Center Interconnects (DCI): Metros and regional data centers demand high-capacity modules like 100G/400G ZR4 and ER8 for spans up to 80km without inline amplification.
Energy Optimization: Modern transceivers must balance performance with energy budgets, pushing manufacturers to innovate in thermal dissipation materials and integrated laser optics.

<1.5W Ultra-Low Power/100G

0.1ms Ultra-low Transmission Latency

100% MSA Standard Compliant

80km Max Single-Mode Range (ZR4)

Optical Engineering & Technical Roadmap

An engineering analysis of silicon photonics, laser modulation, and package form-factors defining the future of optical interconnects.

Laser Sources: VCSEL vs. EML vs. Silicon Photonics

For short-reach networks (up to 100m over multimode fiber, MMF), 850nm VCSEL (Vertical-Cavity Surface-Emitting Laser) arrays remain the industry benchmark due to their cost efficiency and low power usage. In contrast, for medium to long distances (up to 10km/40km over single-mode fiber, SMF), Electro-absorption Modulated Lasers (EML) operating at 1310nm or CWDM bands are used because they maintain excellent signal integrity at high frequencies.

For 400G, 800G, and future 1.6T modules, Silicon Photonics (SiPh) is key to resolving the physical limits of discrete optics. By co-packaging optoelectronic devices directly on silicon substrates, SiPh achieves higher chip integration, reduces manufacturing costs, and minimizes optical loss.

Linear Drive (LPO) and Co-Packaged Optics (CPO)

As bandwidth needs increase, the power consumption of internal DSPs (Digital Signal Processors) in transceivers becomes a bottleneck. The industry is currently exploring Linear-drive Pluggable Optics (LPO), which eliminates the DSP within the module to drastically cut down latency and power.

Concurrently, Co-Packaged Optics (CPO) positions the optical engines directly alongside the central switch ASIC, eliminating copper trace losses and providing a viable pathway for high-density 1.6T and 3.2T data pipelines.

Localized Application Scenarios

Optimized optical transceiver form-factors matched specifically to network topologies and deployment distances.

HPC & AI Clusters

Intra-Rack & Leaf-Spine Fab

Utilizing 100G QSFP28 SR4, 200G QSFP56 SR4, and 400G QSFP-DD SR8 modules over multimode MPO fiber to deliver low-latency high-throughput interconnections between core switches and compute engines.

Metro & DCI Networks

Data Center Interconnects

Deploying 100G/400G LR4, ER4, and ZR4 coherent transceivers across distances of 10km, 40km, and up to 80km over single-mode duplex LC fiber links, ensuring high integrity without external amplification.

Telecommunications

5G Fronthaul & Backhaul

Adapting single-mode 100G QSFP28 transceivers (such as LR4 and PSM4) to meet temperature-hardened outdoors requirements for telecom distribution hubs and centralized radio access networks (C-RAN).

Lumopt Opto Technology Manufacturing Excellence

Registered as Luguang Communication Technology Co., Ltd. in China, we are a professional manufacturer and exporter specializing in high-performance optical transceivers.

We focus on the R&D, production, and customization of a full range of optical modules covering 10G, 25G, 100G, 400G, 800G, and 1.6T products. These modules are widely used in data centers, telecom networks, cloud computing, AI compute clusters, and enterprise communication systems.

Our facilities include standardized dust-free cleanrooms, advanced automated testing systems, and a professional R&D team. We implement strict quality controls at every step of production. All optical transceivers meet international industry standards, are certified for reliability, and support OEM & ODM customization.

Adhering to our core principles of stable quality, competitive pricing, and reliable support, Lumopt has built long-term partnerships with distributors, system integrators, and telecom enterprises globally. We continue to launch innovative optoelectronic products to deliver stable, cost-effective optical transmission solutions for the global market.

Our Precision Manufacturing & Assembly Pipeline

Step 01 Twisting

Step 02 PCB Tinned

Step 03 Soldering

Step 04 Shear-LED-Pin

Step 05 Semi-Finished Testing

Step 06 Plastic-Case Assembly

Step 07 Hi-Pot Testing

Step 08 Integrated Testing

Step 09 Final Inspecting

Step 10 Packing

Advanced Automated Testing & Laboratory Instruments

Comprehensive Tester

LED Lamp Tester

Hi-Pot Tester

Automatic Welding Machine

Laser Marking Machine

Transformer Automatic Tester

Transformer Auto-Packer

RJ45 Tester Module A

RJ45 Tester Module B - Automated Calibration

International Compliance & Technical Support

Ensuring seamless performance and integration within networks globally.

Multi-Vendor Compatibility Protocols

To prevent network locks and compatibility issues, all Lumopt transceivers are programmed and tested with target firmware EEPROM configurations. This matches the exact requirements of major hardware providers, including:

Cisco, Arista, Juniper, Dell, Extreme, HPE, Edge-Core, and Mellanox.

Global Certifications & Standards

Our design and assembly processes follow rigorous compliance policies to meet the environmental and operations mandates of global markets:

MSA Standards: Complies with QSFP28, QSFP56, and QSFP-DD Multi-Source Agreements.
Regulatory: CE, FCC, RoHS, and REACH certified.
Laser Safety: FDA Class 1 Eye Safety Compliant.

Technical Q&A - Optical Transceivers

Expert technical answers regarding optical layer design, transmission specifications, and system installations.

What is the difference between QSFP28 and QSFP56 form-factors?

While both share the same physical size (4-channel pluggable), QSFP28 operates primarily on NRZ modulation with a data rate of up to 28Gbps per channel (delivering 100G total). QSFP56 utilizes 4-level PAM4 modulation, enabling 50Gbps per channel to achieve 200G throughput without doubling the fiber footprint or optical lane requirement.

How does PAM4 modulation improve bandwidth efficiency in 400G transceivers?

PAM4 (Pulse Amplitude Modulation 4-Level) transmits two bits of information per symbol interval using four distinct amplitude levels. This doubles the transmission capacity compared to traditional binary NRZ (Non-Return-to-Zero) modulation, allowing 400G transceivers (using 8x50G lanes or 4x100G lanes) to achieve ultra-high throughput without needing excessive laser configurations.

What steps does the Lumopt factory take to guarantee system compatibility?

Our testing center employs a multi-vendor host switch matrix. Each module undergoes live port validation. This process matches the EEPROM's device tables, vendor codes, and DDM (Digital Diagnostic Monitoring) parameters to the targeted network environment (e.g. Cisco, Arista, Juniper), eliminating port-shutdown issues.

Can 400G QSFP-DD modules be plugged into 100G QSFP28 ports?

No, QSFP-DD modules feature a second row of electrical pins to support 8-lane electrical channels and are not backward compatible with QSFP28 ports. However, most QSFP-DD system ports are backward compatible, meaning you can plug a 100G QSFP28 module into a 400G QSFP-DD port using specialized configurations.

What is the maximum optical link distance for single-mode 100G and 400G transceivers?

For standard networks, 100G QSFP28 ZR4 modules can reach up to 80km over Single-Mode Fiber (SMF) using 1310nm wavelengths. In 400G layouts, QSFP-DD ER8/ZR4 modules support links up to 40km or 80km, making them suitable for long-haul networks and Data Center Interconnects (DCI).

How does DDM/DOM help in managing optical transceivers?

DDM (Digital Diagnostic Monitoring) or DOM (Digital Optical Monitoring) provides real-time tracking of parameters like transmit/receive power, temperature, bias current, and supply voltage. This allows network administrators to proactively detect fiber degradation and prevent sudden link failures.

Specialty High-Density & Long-Reach Modules

Industrial-grade transceivers engineered for extended distances, CWDM spectral multiplexing, and direct fiber breakout topologies.

400GBASE-FR4 Duplex LC Optical Module 400G CWDM QSFP-DD PAM4 2km DDM SMF Optical Transceiver

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400GBASE-LR8 Duplex LC Optical Transceiver Module SMF 1310nm 400G QSFP-DD 10km

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400GBASE-ER8 Single Mode 1310nm 400G QSFP-DD 40km Duplex LC SMF Optical Transceiver Module

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Multiple Mode 850nm 400G QSFP-DD SR8 100m MTP/MPO-16 APC MMF Optical Transceiver Module

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100GBASE-PSM4 QSFP28 1310nm 500m SMF 100G MPO-12 Optical Transceiver Module

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QSFP28 100GBASE-PLR4L 1310nm 2km 100G MPO-12 SMF Optical Transceiver Module

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100GBASE-ESR4 QSFP28 100G 850nm 300m MPO-12 MMF Optical Transceiver Module

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100GBASE-SL4 Multimode 100G QSFP28 850nm 30m MPO-12 MMF Optical Transceiver Module

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