FiberQ FiberQ

Optical Transceivers 40G QSFP+ Module Factory & Supplier

High-Density 40G Optical Interconnects Engine - Certified Compatibility, OEM/ODM Customization & Mass Production Scale

Premium 40G QSFP+ Modules Selection

40GBASE-SR4 Multimode 850nm 40G QSFP+
High-performance short-reach interconnect solution. MPO/MTP interface, VCSEL technology, supporting up to 150m on OM4.
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Single Mode Fiber Optic Transceiver Module Duplex LC 1310nm SMF QSFP+ 40G 80km
Ultra long-haul transmission over single mode fiber. Features Duplex LC interface with advanced APD receiver.
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QSFP+ 40GBASE-SR BiDi 300m Multi Mode Duplex LC
Bidirectional transmission over LC duplex OM3/OM4 fiber. Saves infrastructure costs during 10G to 40G migration.
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40GBASE-LR4 Duplex LC SMF Optical Transceiver
Standard long-reach 10km link budget. Features DFB laser transmitters, operating over CWDM grid channels.
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40GBASE-ER4 Duplex LC Single Mode 1310nm
40km reach over single-mode fiber with duplex LC connector. Dynamic optical budget management for core networking.
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40GBASE-ZR4 SMF Optical Transceiver
80km long-span optical architecture. Features cooled DML transmitters and high sensitivity APD receiver.
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40GBASE-SR4 MPO-12 Multimode Optical Transceiver
Cost-efficient high-density parallel optics. 12-fiber MPO/MTP connector structure optimized for top-of-rack switches.
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SFP Cage Integrated Connector 2x1 Ports
High durability board-mount interconnect accessory. Provides structural integrity and electrical contact protection.
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Expertise, Precision & Reliability in Optical Interconnects

As network infrastructures scale up to accommodate high-frequency data processing, AI/ML computing workloads, and high-performance computing (HPC) clusters, finding a reliable partner for optical transport layers is crucial. FiberQ Photonics Technology Co., Ltd. is a leading manufacturer specializing in high-performance fiber optic transceivers and advanced photonic communication solutions. Since 2015, FiberQ has designed and produced cutting-edge components for global data centers, telecom networks, and high-speed interconnect applications.

Our manufacturing philosophy is grounded in physical and optical precision. High-speed 40G QSFP+ transceivers rely on precise optoelectronic alignment and signal processing. With a state-of-the-art facility spanning 12,600㎡, we design our transceivers to comply with, or exceed, industry standard multisource agreements (MSAs). This ensures our products deliver superior thermal stability, low power consumption, and reliable Bit Error Rate (BER) performance under various operational conditions.

12 Years
Industry Experience
240+
R&D Engineers
12,600㎡
Production Area
$9.5M
Annual Export Revenue

Technology Deep-Dive: Architecture of the 40G QSFP+ Module

The Quad Small Form-factor Pluggable Plus (QSFP+) transceiver is a compact, hot-pluggable optical module used for 40 Gigabit Ethernet (40GbE) networks. It integrates four independent transmit and receive channels, each operating at 10.3125 Gbps. This aggregate bandwidth of 41.25 Gbps provides dense optical port allocation for core switches, enterprise distribution layers, and telecom transmission units.

Physical Interfaces: MPO vs. Duplex LC

Depending on the transmission distance and fiber cabling architecture, 40G QSFP+ modules use different physical interfaces:

  • MPO/MTP Interface (SR4 Variants): These modules utilize parallel optics over 12-fiber ribbon multi-mode fibers (MMF). Four lanes are used for transmission, four lanes for reception, and the remaining four lanes are left unused. This configuration requires MPO-12 patch cords and is ideal for short distances, supporting up to 150m on OM4.
  • Duplex LC Interface (LR4, ER4, ZR4, BiDi): For long-haul links, parallel ribbon cables become cost-prohibitive. LR4 and ER4 modules employ Coarse Wavelength Division Multiplexing (CWDM) technology. Inside the transceiver, a Mux/Demux multiplexes four discrete wavelengths (1271nm, 1291nm, 1311nm, and 1331nm) onto a single single-mode fiber (SMF) through a Duplex LC connector. This technology supports links from 10km up to 80km.
  • Bidirectional (BiDi) Interface: The QSFP+ BiDi transceiver operates over duplex OM3 or OM4 multi-mode fiber. It uses two wavelengths (850nm and 900nm) bidirectionally on each fiber, enabling a 10G duplex LC patch cord infrastructure to support 40G links. This eliminates the need for expensive MPO fiber upgrades.
Module Type Wavelength Fiber Type Connector Type Max Link Length Typical Power Consumption
40GBASE-SR4 850nm MMF (OM3/OM4) MPO-12 100m (OM3) / 150m (OM4) < 1.5 W
40GBASE-SR BiDi 850nm / 900nm MMF (OM3/OM4) Duplex LC 100m (OM3) / 150m (OM4) < 1.5 W
40GBASE-LR4 1271, 1291, 1311, 1331nm SMF Duplex LC 10km < 3.5 W
40GBASE-ER4 1271, 1291, 1311, 1331nm SMF Duplex LC 40km < 3.5 W
40GBASE-ZR4 1271, 1291, 1311, 1331nm SMF Duplex LC 80km < 4.0 W

Industry Trends & Global Procurement Requirements

Evolution: 40G Coexistence with 100G/400G Networks

While next-generation hyperscale data centers are adopting 100G, 400G, and 800G, 40G QSFP+ transceivers remain critical in B2B enterprise networking, edge nodes, and industrial computing clusters. In many distribution rings, upgrading switch infrastructure is not cost-effective. Operators prefer using 4x10G breakout configurations or direct 40G links to optimize bandwidth. Our R&D team continuously refines 40G performance, introducing newer architectures like the 40G BiDi to support these upgrades.

Procurement Needs: Customization & Compatibility

B2B buyers require reliable compatibility with legacy network switch hardware. FiberQ ensures our 40G QSFP+ transceivers work seamlessly with Cisco, Arista, Juniper, HPE, Dell, and other major platforms. We accomplish this by writing custom EEPROM code tailored to each switch manufacturer's proprietary OS. This eliminates vendor lock-in and reduces CapEx budgets by up to 60% compared to buying original equipment manufacturer parts.

Industrial-Grade Quality Assurance & Manufacturing Reliability

FiberQ is committed to providing reliable optical network products. With 62 experienced inspectors, our QA and QC protocols are designed to ensure every module meets industry standards. Optical transceivers can fail due to optical back-reflection, polarization discrepancies, or thermal degradation. To prevent these issues, our facility uses advanced testing equipment at every stage of production.

Our manufacturing facility features automated optical alignment tools, high-speed bit error rate testers (BERT), digital sampling oscilloscopes, and optical spectrum analyzers. These tools allow us to monitor optical eye diagrams, extinction ratios, and jitter profiles. Each transceiver undergoes 100% interoperability testing, high-temperature aging chambers, and physical cleaning protocols. This guarantees an MTBF (Mean Time Between Failures) exceeding 100,000 operational hours.

FiberQ Manufacturing Facility Detail 1
FiberQ Cleanroom Assembly Line 2
Advanced Testing Optical Instrumentation 3
Automated Alignment Calibration Stations 4
Environmental Thermal Chambers 5
Product Quality Inspection & Verification 6
Final Packaging and Labeling Department 7

Global Supply Chain Integration & Regulatory Compliance

Managing international logistics and customs compliance requires deep industry experience. FiberQ operates a stable network of approximately 1,450 supply chain partners. This network guarantees steady access to critical raw materials like laser diodes, TOSA/ROSA components, and advanced PCB micro-controllers, protecting our production capacity from market fluctuations.

All FiberQ transceivers are designed and manufactured in compliance with major international safety standards:

Laser Safety & FDA Compliance

Modules comply with FDA CDRH Laser Class 1 standards and IEC 60825-1 certifications, ensuring safe operation during live transceiver hot-plugging.

EMC/EMI Shielding Regulations

Fully compliant with FCC Part 15 Class B and CE EN 55022. This compliance ensures high shielding efficiency and prevents interference with nearby electronic systems.

RoHS & REACH Standards

Built with lead-free components in compliance with European Directive 2011/65/EU. This ensures all components meet environmental safety regulations.

Complementary Interface & Fiber Optic Hardware

ARSM11-3652I JXD6-0002NL with Leds
Highly integrated shielded RJ45 connector designed for surface-mount PCB configurations. Features built-in LEDs.
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10GBASE-ER SFP+ Transceiver 1550nm 40km
Optimized for 10Gbps Ethernet links. Offers reliable signal coverage up to 40km over single-mode fibers.
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1550nm-TX/1310nm-RX Single Mode SFP 2.5G Bidi
Bi-directional transceiver module for 2.5G SDH/SONET systems. Minimizes physical cabling infrastructure requirements.
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10/100/1000Base-T RJ45 +USB modular jack
Combined dual-stacked interface for modern motherboard connectivity. Delivers excellent signal shielding.
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J4858D HPE Aruba Compatible 1000BASE SX
Pre-programmed for HPE Aruba switches. Delivers plug-and-play operation for enterprise networks.
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1310nm-TX/1550nm-RX Single Mode Simplex LC SFP 155M
Designed for legacy optical distribution platforms, supporting single-fiber simplex connections up to 10km.
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With Dual USB 10/100 Base-T With Leds RJ45
Integrated dual USB ports stacked with a fast ethernet RJ45 module. Optimized for embedded systems.
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10GBASE-LRM SMF Optical Transceiver Duplex LC
Provides reliable 10Gbps transmission over legacy multimode fiber. Extends network life without recabling.
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Technology Roadmap: The Future of High-Speed Interconnects

Data center and telecommunication infrastructures are preparing for larger, faster data streams. As artificial intelligence, large language models (LLMs), and edge cloud computing expand, high-speed optical transceivers are adapting to meet higher performance requirements.

FiberQ continues to develop advanced optical transceivers to support these upgrades. Our R&D department is focused on designing high-speed, high-density optical hardware, including 100G, 200G, 400G, and 800G form factors. Last year alone, we introduced approximately 180 new products, demonstrating our focus on technical innovation.

Our development roadmap includes several advanced technological projects:

  • Co-Packaged Optics (CPO): Integrating optics and silicon switch engines onto a single substrate. This configuration reduces power consumption and physical path distance, overcoming traditional copper and board link limitations.
  • Silicon Photonics Integration: Using standard silicon manufacturing processes to create optical components on silicon chips. This reduces manufacturing costs and enables larger production volumes for high-density applications.
  • Extended Range High-Speed Modules: Designing long-haul interfaces for 100G and 400G modules, enabling link spans up to 40km or 80km without external signal amplification.

Technical Q&A: B2B Procurement and Operations

What are the main differences between 40G QSFP+ SR4 and BiDi transceivers?

The SR4 transceiver uses a parallel multi-mode design that requires an MPO-12 connector, running over 8 optical fibers (4 transmit, 4 receive). The BiDi (Bidirectional) transceiver uses a duplex LC connector, transmitting two separate wavelengths (typically 850nm and 900nm) bidirectionally on the same fiber. This allows you to upgrade from 10G to 40G over existing duplex LC multi-mode cabling without needing to run new fiber patch cables.

How does FiberQ guarantee hardware compatibility with Cisco, Arista, and HPE systems?

We use an advanced EEPROM programming and verification process in our testing facility. Every transceiver is programmed with compatibility codes tailored to the host switch OS. We run interoperability checks on the specific target switch platforms to confirm that domestic and international diagnostic protocols (DOM/DDM) report accurate metrics without triggering system errors.

What quality checks does FiberQ perform to ensure product reliability?

Our quality control team uses a multi-stage verification process: Automated Optical Performance testing for laser eye-diagram analysis, interferometric inspection of the connector end-faces to prevent signal loss, high-temperature environmental aging tests, and final manual physical checks. Our QA team is staffed by 62 experienced inspectors dedicated to maintaining product reliability.

Can FiberQ customize transceivers for long-distance transmissions beyond 40km?

Yes. FiberQ supports custom modifications, including wavelength configuration, thermal management adjustments, and long-range form factors. For long-distance spans, we design ER4 (40km) and ZR4 (80km) modules with cooled DML transmitters and high-sensitivity APD receivers, allowing links to operate reliably without external optical amplifiers.

What certifications do FiberQ transceivers carry for international deployment?

Our products meet global regulatory and environmental standards, including CE, FCC Part 15, FDA CDRH Class 1 Laser Safety, RoHS, and REACH. This compliance ensures our transceivers can be integrated into enterprise networks, telecom centers, and corporate data sites worldwide.

How does FiberQ manage its supply chain to guarantee stable lead times?

We maintain partnerships with approximately 1,450 suppliers, which helps secure raw materials like laser diodes and optoelectronic micro-controllers. This network protects our production schedule from market shortages, allowing us to keep lead times stable for global orders.

All 40G QSFP+ Module Products