MPO / MTP
Fiber Connectors · 8 specs
Direct Answer
The MPO connector (Multi-fiber Push On, TIA-604-5 / FOCIS-5; US Conec MTP) is a high-density parallel optical connector utilizing a precision molded rectangular MT ferrule that houses 8, 12, 16, 24, 32, or 72 optical fibers in a single push-pull housing, standard for 40G, 100G, 400G, and 800G multi-lane transceivers.
Source: TIA-604-5-D (FOCIS-5) / IEC 61754-7 / TIA-568.3-D · Last reviewed Aug 28, 2026
Specs
| Standard / FOCIS | TIA-604-5-D (FOCIS-5) / IEC 61754-7 |
| Ferrule Type | Rectangular MT (Mechanically Transferable) polymer |
| Standard Fiber Counts | 8, 12, 16, 24, 32, or 72 fibers |
| Alignment Mechanism | Stainless guide pins (Male) / guide holes (Female) |
| Latching Mechanism | Push-pull sliding sleeve |
| Polish Types Available | Flat (Multi-Mode UPC) and 8-degree Angled (Single-Mode APC) |
| Polarity Methods (TIA-568.3) | Method A (Straight), Method B (Cross), Method C (Pair-flipped) |
| Typical Insertion Loss | 0.15–0.35 dB |
Parallel Optics and Transceiver Interfaces
MPO is the foundational connector for parallel optical transceivers. Rather than transmitting over a single fiber pair, high-speed standards divide signals across multiple parallel fiber lanes:
- MPO-12 (Base-8/Base-12): Used for 40GBASE-SR4 (4 Tx / 4 Rx / 4 unused) and 100GBASE-SR4.
- MPO-16 / MPO-24: Used for 400GBASE-SR8 and 800G parallel optics.
MPO vs MTP and Polarity Rules
MTP is a registered trademark of US Conec representing an enhanced MPO design with removable housings, floating ferrules, and elliptical guide pins that reduce mechanical wear and insertion loss. TIA-568 defines three strict polarity mapping standards (Method A, B, and C) to guarantee transmit fibers properly mate with receive detectors across structured trunks.