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Introduction to DR8 Optical Module

Fiber optic splice closure knowledge brief Published 20 May 2023

Prepared for preliminary research by the RIVO OPTICAL knowledge desk. Confirm cable count, splice capacity, sealing class, tray layout, protection sleeves and installation requirements against current standards and product documentation.

The DR8 optical module is an 800Gb/s OSFP transceiver supporting 8 parallel 100Gb/s lanes over single-mode fiber with a reach of up to 500 meters.

Key Specifications
  • Data Rate: 800Gb/s aggregate, achieved via 8 lanes of 100Gb/s each using PAM4 modulation .
  • Form Factor: OSFP (Octal Small Form Factor Pluggable), designed for high-density, high-speed data center applications .
  • Optical Reach: Up to 500 meters over single-mode fiber (SMF) for standard DR8 modules; some variants support up to 2 km with enhanced DR8+ designs .
  • Connectors: Dual MPO-12 or MPO-16 APC connectors for parallel fiber lanes .
  • Breakout Options: Supports multiple configurations including 8x100GbE, 4x200GbE, 2x400GbE, or a single 800GbE link, with software-configurable half-rate operation for backward compatibility .
  • Standards Compliance: IEEE 802.3 800GBASE-DR8, OSFP MSA, and CMIS 5.3 for firmware management .
  • Digital Diagnostics: Provides monitoring of optical power, temperature, and voltage via I2C interface .
  • Applications: Ideal for data centers, high-performance computing networks, enterprise core/distribution layers, and AI front-end/back-end networks .
Performance and Features
  • Parallel Single-Mode Fiber: Each lane carries 100Gb/s, enabling high-bandwidth, low-latency interconnects .
  • Forward Error Correction (FEC): Implemented on the host platform to ensure error-free transmission .
  • Firmware Upgradeable: Supports field firmware updates for enhanced functionality and VDM support .
  • Power and Thermal: Low power consumption with options for liquid-cooled switches in high-density deployments .
Summary

The DR8 optical module is a high-speed, versatile transceiver designed for modern data center networks requiring 800Gb/s throughput with flexible breakout options. Its OSFP form factor, single-mode fiber support, and PAM4 modulation make it suitable for short-reach (up to 500m) and extended-reach (up to 2 km) applications, providing reliable, high-density connectivity for enterprise, service provider, and AI workloads .

Introduction to DR8 Optical Module - RIVO MULTITRADE OPTICAL SYSTEMS [PDF]

Introduction to DR8 Optical Module

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This reference is intended for preliminary fiber optic splice closure research. Compatibility, splice capacity, sealing class, tray layout, protection sleeves, installation methods, test limits and applicable standards must be verified for the specific project.

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