Supplier QSFP optical module QSFP28

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QSFP28 optical modules are high-capacity 100G transceivers used in data centers and enterprise networks, available in various types such as SR4, LR4, ZR4, PAM4, and coherent modules from multiple manufacturers.

Overview of QSFP28 Modules

QSFP28 (Quad Small Form-Factor Pluggable 28) modules provide four 25G lanes, enabling 100G Ethernet connectivity. They are widely used for high-density, low-power, and cost-efficient 100G deployments in data centers, enterprise networks, and service provider environments . QSFP28 modules support both short-range multimode fiber (SR4) and long-range single-mode fiber (LR4, ZR4) applications, as well as coherent and PAM4 technologies for extended reach and higher performance .

Common QSFP28 Module Types

SR4 (Short Reach): Supports up to 70–100 meters over OM3/OM4 multimode fiber using MTP/MPO connectors, ideal for intra-data center links .
LR4 (Long Reach): Supports up to 10–20 km over single-mode fiber with duplex LC connectors, suitable for enterprise and metro networks .
ZR4 (Extended Reach): Supports distances up to 80 km over single-mode fiber, often used in long-distance DCI and service provider networks .
PAM4 QSFP28: Optimized for short-range, high-density data center interconnects with low power consumption .
Coherent QSFP28 (100ZR): Provides high-performance, wavelength-tunable transmission for metro, regional, and long-haul networks, supporting up to 500 km DWDM links .

Key Features

High port density and low power consumption for cost-effective 100G deployment .
Digital diagnostics via I2C interface for real-time monitoring of temperature, voltage, and optical power .
Compatibility with major network vendors such as Cisco, Arista, Juniper, and Brocade .
Connector types: LC for duplex single-mode, MPO/MTP for parallel multimode fiber .

Notable Manufacturers

FS (FS.com): Offers a wide range of QSFP28 modules including SR4, LR4, ZR4, and PSM4, with lifetime warranty and tested compatibility .
Smartoptics: Provides coherent, PAM4, and ZR4 QSFP28 modules for data center and metro networks .
Acacia: Specializes in 100ZR coherent QSFP28 modules for long-distance and high-capacity applications .
Amphenol: Offers SR4, LR4, ER4, ZR4, and AOC QSFP28 modules compliant with IEEE802.3bm and SFF-8636 standards . QSFP28 modules are essential for scalable 100G network deployments, offering flexibility in reach, power efficiency, and compatibility across different networking environments. Choosing the right module depends on distance requirements, fiber type, and network architecture.

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