12F MPO Loopback

Function: Tests transceiver transmit/receive via looped signal, for 40G/100G parallel optics networks.

Features: SM/MM fibers, 12/24-fiber ferrules, MPO connectors, factory-tested, compact and reliable.

Specs: -40℃~+80℃ operating temp, low insertion loss, high return loss, 15kgf tensile resistance, 60mm×20mm.

Applications: Tests 40G/100G MPO transceivers, network performance; for MPO burn-in and data center use.

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Product Description
Specification
Product Advantage

Product Description

1. Product Overview

12-Fibers MPO Fiber Loopback Module provides a looped signal path to test transmit and receiving functions of optical transceivers and network segments. It is widely used in testing environments, especially for parallel optics 40G and 100G networks.

This module connects TX and RX positions of MPO transceiver interfaces, facilitating insertion loss (IL) testing of optical network segments when connected to MPO trunks or patch leads. It supports verification and testing of MPO‑interface transceivers such as 40GBASE‑SR4 QSFP+ and 100GBASE‑SR4 devices.

The compact and rugged housing ensures high stability and reliability for high‑density applications.

2. Key Features

• Supports SM 9/125, MM 50/125, MM 62.5/125 fiber types; 12‑fiber or 24‑fiber ferrule options

• Female and male MPO connector options available

• Multiple polarity variants for channel alignment

• Compatible with 40G QSFP+ and 100G CXP/CFP transceivers

• Factory terminated and fully tested MPO interface

• Excellent optical and mechanical performance

Specification

3. Technical Specifications

Item	Parameter
Fiber Type	Singlemode (SM) or Multimode (MM)
Fiber Diameter	9/125 μm, 50/125 μm, 62.5/125 μm
Insertion Loss	MM ＜ 1.2 dB<br>SM (G652D) ＜ 1.5 dB<br>SM (G657A1) ＜ 0.75 dB
Return Loss	SM ＞ 55 dB<br>MM ＞ 25 dB
Insert‑pull Test	500 cycles, IL variation ＜ 0.5 dB
Operating Temperature	‑40 ℃ to +80 ℃
Tensile Resistance	15 kgf
Dimensions	60 mm × 20 mm