12 Fibers MPO/APC OS2 Single Mode 9/125 Fiber Loopback Cable

This 12-fiber MPO/APC OS2 loopback cable is designed for high-speed fiber network testing and diagnostics. It ensures accurate validation of MPO/MTP links in data centers and telecom systems.

SKU FLC-MPO-ASM9-12 Category
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The 12-Fiber MPO/APC OS2 Single Mode Loopback Cable is a high-performance diagnostic and testing solution designed for fiber optic network verification and troubleshooting. It is commonly used in data centers and high-speed optical communication systems to simulate a full transmission path, enabling accurate testing of MPO/MTP-based networks.

Featuring a precision MPO/APC interface, this loopback module ensures low reflection and stable optical performance, making it ideal for validating 40G, 100G, and higher-speed network links. Its compact and robust design allows easy insertion into MPO ports for efficient testing without additional equipment.

Loopback Modules Choosing Guide

SKU Connector Fiber Count Fiber Type Polish
FLC-MPO-ASM9-12 MPO 12 OS2 APC
FLC-MPO-MM1-12 MPO 12 OM1 APC
FLC-MPO-MM3-12 MPO 12 OM3 APC
FLC-MTP-ASM9-24 MTP 24 OS2 APC
FLC-MTP-MM3-24 MTP 24 OM3 PC
FLC-MT-MM6 MTRJ Duplex 2 OM1 UPC/APC
FLC-SC-MM3 SC Duplex 2 OM3 UPC
FLC-ST-SM9 ST 1 OS2 UPC
FLM-LC-MM3 LC Duplex 2 OM3 UPC
FLM-SC-MM6 SC Duplex 2 OM1 UPC
Fiber Count12 Fibers
Fiber ModeOS2 Single Mode 9/125μm
Connector TypeMPO/APC
InterfaceMPO/MTP Compatible
Polish TypeAPC (Angled Physical Contact)
ApplicationNetwork testing / diagnostics
Data Rate Support40G / 100G / 400G networks
Housing MaterialDurable plastic
Operating Temperature-20°C to +60°C
  • 12-fiber MPO/APC interface for high-precision optical testing
  • OS2 single-mode 9/125μm fiber for long-distance accuracy
  • Low back reflection APC polishing for improved signal stability
  • Compact loopback design for quick installation and removal
  • Supports high-speed network testing (40G/100G systems)
  • Durable housing for repeated testing cycles
  • Ideal for MPO/MTP structured cabling environments
  • Data center fiber optic link testing and validation
  • MPO/MTP trunk cable verification
  • High-speed network commissioning (40G/100G/400G)
  • Optical performance diagnostics and troubleshooting
  • Telecommunication infrastructure maintenance
  • Laboratory and R&D fiber testing environments

OEM customization is available including fiber count (8F/12F/24F), connector type (APC/UPC), fiber mode (OS1/OS2), housing color, and labeling. We also support custom loopback configurations for specific testing requirements in data center and telecom environments.

Loopback Module Customization Options

Connector Type LC, SC, MPO, MTP
Fiber Count Duplex, 8F, 12F, 16F, 24F
Fiber Mode OS2, OM3, OM4, OM5
Connector Polish UPC, APC
MPO/MTP Connector Male, Female
MPO/MTP Polarity Type A, Type B
Housing Material ABS Plastic, Metal
Housing Color Beige, Aqua, Violet, Lime Green, Black, Custom
Typical Applications Optical Transceiver Testing, Switch Port Diagnostics, Production Testing, Data Center Maintenance
  • What is a fiber loopback cable used for
    A loopback cable is used to test optical network ports by sending signals back to the source for validation and diagnostics.
  • Why use MPO/APC instead of MPO/UPC
    MPO/APC provides lower back reflection, making it more suitable for high-speed and high-precision testing environments.
  • Can this be used for 100G networks
    Yes, it is commonly used for 40G, 100G, and higher-speed MPO-based network testing.
  • Is it compatible with all MPO ports
    It is compatible with standard MPO/MTP interfaces but must match polarity and fiber count requirements.
  • Can fiber count be customized
    Yes, we support customization for 8, 12, 24 fibers and other configurations.