QSFPP-40GBASE-SR4 Juniper QSFP+ SR4 Om3 100m 850nm Optical Transceiver

Juniper QSFPP-40GBASE-SR4 QSFP+ Optical Transceiver Module

Product Overview

The Juniper QSFPP-40GBASE-SR4 is a fully compatible QSFP+ transceiver module that enables 40GbE connectivity over multimode fiber (MMF). Featuring an MPO/MTP optical interface and advanced digital diagnostics monitoring, this module offers stable performance, simplified network management, and seamless integration with compatible Juniper networking equipment.

General Information

• Manufacturer: Juniper Networks
• Part Number: QSFPP-40GBASE-SR4
• Product Type: Optical Transceiver Module
• Form Factor: QSFP+ Transceiver
• Ethernet Standard: 40GBASE-SR4

Technical Specifications

Optical Performance

• Transmission Speed: 40 Gigabit Ethernet
• Wavelength: 840-860 nm
• Operating Frequency: 850nm
• Fiber Type: Multimode Fiber (MMF)
• Connector Type: MTP/MPO-12 Male
• Maximum Distance: Up to 100m over OM3 fiber
• Extended Distance: Up to 150m over OM4 fiber

Interface and Connectivity

• QSFP+ hot-pluggable form factor
• MPO/MTP optical connector interface
• XLPPI electrical interface
• Supports high-density networking environments
• Optimized for 40GbE data center applications

Digital Monitoring Features

• Digital Optical Monitoring (DOM)
• Digital Diagnostics Monitoring (DDM)
• Real-time operational status tracking
• Enhanced network visibility and troubleshooting

Key Features and Benefits

High-Speed Data Transmission

• 4 independent full-duplex channels
• 11.2 Gbps data rate per channel
• Aggregate 40GbE throughput
• Low-latency network performance

Extended Fiber Reach

• Up to 100 meters over OM3 multimode fiber
• Up to 150 meters over OM4 multimode fiber
• Reliable short-range optical connectivity
• Ideal for high-density fiber infrastructures

Energy-Efficient Design

• Maximum power consumption of 1.5W
• Optimized thermal management
• Reduced operating costs
• Suitable for energy-conscious network deployments

Compatibility and Compliance

Juniper Network Compatibility

• Fully compatible with Juniper equipment
• Plug-and-play deployment
• Reliable interoperability
• Enterprise-grade networking performance

Industry Standards Compliance

• 40GBASE-SR4 Ethernet compliant
• RoHS compliant and environmentally friendly
• Supports industry-standard QSFP+ specifications
• Meets modern networking requirements

Ideal Deployment Scenarios

• Data centers and cloud computing environments
• Enterprise network infrastructures
• High-performance computing (HPC) systems
• Server-to-switch connectivity
• Network aggregation layers
• Storage area networks (SAN)
• Campus backbone networks

Advantages of the Juniper QSFPP-40GBASE-SR4

• 100% Juniper compatible
• 40GBASE-SR4 QSFP+ optical transceiver
• Four independent full-duplex channels
• 11.2 Gbps data rate per channel
• MPO/MTP optical connectivity
• Up to 150m transmission over OM4 fiber
• Digital Diagnostics Monitoring (DDM)
• Low power consumption of 1.5W maximum
• RoHS compliant design
• Optimized for enterprise and data center networking

Juniper QSFPP-40GBASE-SR4 QSFP+ Transceiver Module Outline

The Juniper QSFPP-40GBASE-SR4 QSFP+ 40GBASE SR4 OM3 100m 850nm Optical Transceiver Module is a high-performance, short-reach optical networking component engineered for next-generation data communication environments. Designed to support 40 Gigabit Ethernet transmission over multimode fiber infrastructure, this transceiver plays a critical role in data centers, enterprise backbones, cloud computing networks, and high-density switching architectures. Its QSFP+ form factor ensures compact deployment while maintaining superior data throughput and signal integrity across short-distance optical links.

Built with 850nm VCSEL laser technology, this module provides optimized performance over OM3 multimode fiber up to 100 meters, making it a reliable choice for intra-rack and inter-rack connectivity. The Juniper QSFPP-40GBASE-SR4 module is widely adopted in environments where high bandwidth, low latency, and energy-efficient optical communication are essential.

High-Speed 40G Ethernet Optical Connectivity Architecture

40GBASE SR4 Transmission Technology

The 40GBASE SR4 standard represents a parallel optical transmission technology that utilizes four lanes for transmitting and receiving data simultaneously. Each lane operates at approximately 10Gbps, combining to deliver a total aggregated bandwidth of 40Gbps. The SR4 architecture is specifically designed for short-range optical communication, ensuring minimal signal degradation and high data integrity over OM3 multimode fiber.

Parallel Optics Design Efficiency

The parallel optics structure used in the Juniper QSFPP-40GBASE-SR4 module enables simultaneous multi-lane transmission, which significantly reduces latency and improves throughput efficiency. Each optical channel is independently modulated, ensuring stable data distribution across all lanes without bottlenecks or congestion.

QSFP+ Form Factor Advantages

The QSFP+ (Quad Small Form-Factor Pluggable Plus) design enhances port density in networking equipment. It allows network switches and routers to support multiple 40G links in a compact physical space. This form factor is especially beneficial in high-density data centers where rack space optimization is a priority.

Compact Design for High-Density Networks

With its compact architecture, the module allows administrators to maximize switch port utilization without compromising thermal performance or signal quality. This enables scalable network expansion while maintaining operational efficiency.

850nm VCSEL Optical Technology and Signal Integrity

Vertical Cavity Surface Emitting Laser (VCSEL) Implementation

The Juniper QSFPP-40GBASE-SR4 module uses 850nm VCSEL laser sources to generate optical signals. VCSEL technology is widely recognized for its low power consumption, high modulation speed, and reliability in multimode fiber applications. The 850nm wavelength is optimized for short-range communication, ensuring minimal dispersion and attenuation.

Low Power Consumption and Thermal Efficiency

One of the most significant advantages of VCSEL-based transceivers is their energy efficiency. The reduced power draw contributes to lower operational costs in large-scale deployments and minimizes heat generation within dense networking environments.

Signal Stability Over OM3 Multimode Fiber

The module is designed specifically for OM3 multimode fiber, which supports laser-optimized transmission over distances up to 100 meters. OM3 fiber provides enhanced bandwidth capabilities compared to earlier multimode standards, ensuring stable and high-quality data transmission for 40G Ethernet applications.

Reduced Modal Dispersion Characteristics

OM3 fiber reduces modal dispersion, allowing multiple light paths to maintain synchronization over longer distances. This ensures that data arrives with minimal distortion, improving overall network reliability and performance consistency.

Data Center Applications and Enterprise Deployment

High-Density Switching Environments

The Juniper QSFPP-40GBASE-SR4 optical transceiver is widely used in high-density switching environments where rapid data transfer between servers, storage systems, and networking equipment is essential. It supports leaf-spine architectures commonly deployed in modern data centers.

Scalability in Cloud Infrastructure

Cloud computing platforms rely heavily on scalable interconnect solutions. This module provides the bandwidth required for virtualization workloads, distributed storage systems, and large-scale application hosting.

Enterprise Backbone Connectivity

In enterprise environments, backbone networks require stable and high-speed links between core switches and aggregation layers. The SR4 module ensures consistent performance and minimizes downtime in mission-critical systems.

Support for Mission-Critical Applications

Industries such as finance, healthcare, and telecommunications depend on uninterrupted data flow. The module’s reliability and redundancy support ensure that mission-critical applications maintain continuous availability.

Technical Performance Characteristics

Bandwidth and Throughput Capabilities

The module supports an aggregate data rate of 40Gbps, distributed across four independent optical lanes. Each lane operates at 10Gbps, ensuring balanced and efficient data transmission without packet loss or delay.

Low Latency Transmission Design

Low latency is achieved through optimized signal processing and parallel data channels, making the module suitable for applications requiring real-time communication such as high-frequency trading and live data analytics.

Distance and Reach Specifications

The Juniper QSFPP-40GBASE-SR4 supports transmission distances up to 100 meters over OM3 multimode fiber and extended reach over OM4 fiber under specific conditions. This flexibility allows integration into a wide range of network topologies.

Short-Reach Optimization Strategy

The module is specifically optimized for short-reach applications, making it ideal for intra-building and intra-data center communication links where long-distance transmission is not required.

Compatibility and Integration with Juniper Network Systems

Seamless Hardware Compatibility

This optical transceiver is engineered to be fully compatible with Juniper networking equipment that supports QSFP+ 40G interfaces. It ensures plug-and-play functionality without requiring complex configuration or firmware adjustments.

Interoperability with Network Switches and Routers

The module integrates seamlessly with Juniper switches and routers, enabling efficient deployment in existing network infrastructures without hardware redesign.

Firmware and System Recognition

Juniper devices are designed to automatically recognize compatible optical modules, ensuring stable operation and reducing deployment time. This simplifies network expansion and maintenance processes.

Reduced Configuration Overhead

Automatic detection and configuration minimize administrative workload, allowing network engineers to focus on performance optimization rather than manual setup procedures.

Reliability, Durability, and Operational Stability

Industrial-Grade Build Quality

The Juniper QSFPP-40GBASE-SR4 module is manufactured using high-quality components that ensure long-term operational stability even in demanding environments. It is designed to withstand continuous operation in data center conditions.

Thermal Management and Heat Dissipation

Efficient thermal design ensures that heat generated during operation is effectively dissipated, reducing the risk of performance degradation over time.

Error Reduction and Signal Correction

Advanced error correction mechanisms and signal conditioning technologies help maintain data integrity across all transmission lanes. This ensures consistent network reliability even under heavy traffic loads.

Stable Long-Term Performance

The module is engineered for continuous operation, ensuring stable performance over extended periods without significant degradation in optical quality or throughput.

Energy Efficiency

Low Power Optical Transmission Design

Energy efficiency is a key advantage of the Juniper QSFPP-40GBASE-SR4 module. Its low power consumption reduces overall operational costs in large-scale deployments where hundreds or thousands of modules may be in use.

Reduced Data Center Power Footprint

Lower energy usage directly contributes to reduced cooling requirements and operational expenditure, making it a cost-effective solution for modern data centers.

Scalability and Future Network Expansion

Support for Evolving Network Demands

As network demands continue to grow, the Juniper QSFPP-40GBASE-SR4 module provides a scalable foundation for upgrading infrastructure without complete system redesign.

Integration with Higher-Speed Architectures

The module supports migration paths toward higher-speed networks by enabling flexible architecture planning and gradual infrastructure upgrades.

Flexible Network Topology Deployment

It can be deployed in various network topologies including leaf-spine, mesh, and hierarchical structures, making it highly adaptable to diverse enterprise requirements.

Adaptability in Hybrid Environments

Hybrid cloud and multi-site enterprise environments benefit from the module’s ability to maintain consistent performance across distributed network segments.