40G Optical Module Product Introduction

40G QSFP+ optical modules provide high-speed, low-power, and versatile connectivity for data centers, enterprise networks, and high-performance computing applications.

Overview

40G QSFP+ (Quad Small Form-Factor Pluggable) optical modules are designed for 40 Gigabit Ethernet connectivity. They are hot-swappable, compact, and compatible with IEEE 802.3ba standards, supporting high-speed data transmission over multimode or single-mode fiber networks (Cisco, Amphenol, FS ).

Types and Transmission Distances

40G QSFP+ modules come in various types depending on fiber type and reach:

• Multimode (MMF): SR4, eSR4, supporting 100m–300m over OM3/OM4 fibers (Cisco, Amphenol, C-LIGHT, Solid Optics )
• Single-mode (SMF): LR4, ER4, ER4 lite, supporting 2km–80km (Amphenol, C-LIGHT, Solid Optics )
• Active Optical Cables (AOC) and DAC breakout cables for short-range connections (Amphenol, Solid Optics ) C-LIGHT modules offer extended distances up to 90km, suitable for metropolitan area networks and long-haul applications .

Standards and Compatibility

• Communication Protocol: IEEE 802.3ba-2018
• Interface Protocol: SFF-8436
• Packaging: QSFP MSA
• Compatible with switches from over 100 brands (C-LIGHT )
• Interoperable with other IEEE-compliant 40GBASE interfaces (Cisco )

Applications

• Data Centers: High-density switching and routing
• Enterprise Networks: Core and distribution layers
• Metropolitan Area Networks (MANs): Long-distance fiber links
• High-Performance Computing & Cloud: Low-latency, high-bandwidth connections
• 5G Communications & Fiber Channels: Supporting high-speed backhaul and aggregation

Key Features

• Hot-swappable for easy installation and maintenance
• Low power consumption and compact form factor (Amphenol )
• High reliability with rigorous testing and quality control (C-LIGHT )
• Support for MPO/MTP or LC connectors depending on module type
• Breakout options for 4x10G connectivity in certain models (Amphenol, Cisco )

Vendor Options

• Cisco: QSFP-40G-SR4-S, QSFP-40G-SR4, QSFP-40G-CSR4 for data center and enterprise use
• Amphenol: SR4, eSR4, IR4, LR4, ER4 lite, AOC, and breakout series
• FS: Modules ranging from 150m to 80km for high-density switching
• C-LIGHT: Wide range of distances (100m–90km) with multi-brand compatibility
• Solid Optics: Multimode and single-mode transceivers with DAC options and lifetime warranty 40G QSFP+ optical modules are essential for modern high-speed networks, offering flexibility, reliability, and scalability for diverse networking environments.