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What optical module should IRU8846 use

Fiber and communications infrastructure knowledge brief Published 06 Nov 2021

Use this reference to prepare product questions for CJC FIBRE. Check interfaces, capacity, protection and installation requirements against the current product documentation.

The IRU8846 typically uses SFP or SFP+ optical modules compatible with CPRI/eCPRI interfaces for high-capacity indoor deployments. IRU8846 OverviewThe Ericsson KRC161754/2 IRU8846 is an indoor radio unit designed for multi-band, multi-operator indoor networks. It connects to baseband units via standard interfaces such as CPRI or eCPRI, supporting high-capacity data transmission in enterprise, campus, or public venue environments.

Its compact and modular design allows multiple remote antenna units to be deployed per IRU, which requires reliable optical connectivity.

Optical Module Requirements

To interface with the IRU8846, the optical module must meet the following criteria: Form Factor: SFP or SFP+ modules are commonly used for indoor radio units due to their compact size and compatibility with high-speed serial interfaces. Data Rate: The module should support the data rate required by the CPRI/eCPRI link. For example, SFP+ modules typically support 10 Gbps, which aligns with many CPRI/eCPRI configurations.

Wavelength and Fiber Type: Single-mode fiber (SMF) is generally preferred for longer indoor runs, while multi-mode fiber (MMF) can be used for shorter distances. The module's wavelength (e.g., 1310 nm or 1550 nm) should match the fiber type and link budget. Digital Diagnostic Monitoring (DDM): Modules with DDM allow real-time monitoring of optical power, temperature, and voltage, which is useful for maintaining network reliability.

Recommended Module Types

Based on the IRU8846's interface and indoor deployment requirements, the following optical modules are suitable: SFP+ 10GBASE-ER/LR: For single-mode fiber connections up to 10 km, suitable for enterprise or campus links. SFP+ 10GBASE-SR: For multi-mode fiber connections up to 300 meters, ideal for short indoor runs. Modules with DDM support: Ensures monitoring of optical parameters for stable operation.

Summary

For the IRU8846, SFP or SFP+ optical transceivers that support the required CPRI/eCPRI data rates and match the fiber type (single-mode or multi-mode) are recommended. Choosing modules with DDM capability enhances operational reliability and simplifies maintenance. Always verify the module's wavelength and link distance against the deployment scenario to ensure optimal performance.

What optical module should IRU8846 use - CJC FIBRE CONSULTANTS [PDF]

What optical module should IRU8846 use

DUW1101 KDU 127 174/1 IRU8846 KRC 161 754/2 NCD 901 65/1

Type:Fiber Optic Transceivers;Network:5 g;Place of Origin:CN;Model Number:DUW1101;Warranty Time:1 Year|Alibaba

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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