Product Overview

The 8 Fiber MPO-12 APC to 4× LC Duplex UPC OS2 Breakout Cable connects one parallel-optics MPO interface to four LC duplex links. It is used in compatible 400GBASE-DR4 to 4×100GBASE-DR/DR1 breakout connections.
One MPO-12 APC connector carries eight active OS2 single-mode fibers to four LC duplex UPC branches. The four branches can be routed to separate 100G optical ports, with LC01–LC04 identification for organized rack cabling.
Connector A: 1× MPO-12 APC
Connector B: 4× LC Duplex UPC
Fiber: 8F OS2 9/125 μm single-mode
Application: 400G DR4 to 4×100G DR/DR1
Technical Specifications
| Specification | Configuration |
| Product Type | Single-mode MPO-to-LC breakout harness |
| MPO Interface | 1× MPO-12 APC |
| LC Interface | 4× LC Duplex UPC (8 individual LC connectors) |
| Fiber Count | 8 active fibers / 4 duplex links |
| Fiber Type | OS2 9/125 μm single-mode |
| MPO Fiber Positions | 1–4 and 9–12 active; 5–8 unused |
| Typical DR4 Wavelength | 1310 nm |
| Main Cable Length | Custom lengths |
| LC Fanout Length | Uniform or staggered lengths |
| Jacket Options | LSZH / OFNP |
| Branch Identification | LC01–LC04 or specified labels |
MPO-12 to 4× LC Duplex Structure
The MPO-12 end has twelve fiber positions, with eight active fibers assigned to four transmit/receive pairs. Positions 1–4 and 9–12 carry the four parallel optical lanes; the center positions 5–8 are unused in this eight-fiber arrangement.
Each lane terminates in one LC duplex branch. The MPO APC interface is intended for compatible angled-polish parallel-optics connections, while the LC UPC ends connect to duplex single-mode optics. Connector pinning and end-to-end polarity are configured for the mating interfaces.

400G DR4 to 4×100G Breakout

The harness provides four duplex fiber paths between a compatible 400G DR4 MPO-12 APC optical module and four 100G DR/DR1 LC duplex optical modules. The host switch or network interface operates in a supported 4×100G breakout mode.
Connection: 400G DR4 (MPO-12 APC) → 8-fiber OS2 breakout harness → 4×100G DR/DR1 (LC Duplex UPC).
The cable is a passive optical assembly. Available transmission distance and optical loss budget depend on the installed transceivers and the complete fiber channel.
Cable and Fanout Options
Main cable length, LC fanout-leg length and branch arrangement can be selected to match the equipment layout. Equal-length branches suit closely grouped ports; staggered legs help reach ports at different positions without excess slack.
Other connector combinations are available in the MPO/MTP breakout cable range.

OS2 Fiber
Uniform or Staggered Legs
LSZH or OFNP Jacket
LC01–LC04 Labels
Configured Pinning & Polarity
Request a Quote

DIMI supplies MPO-to-LC breakout harnesses in project-specific lengths and fanout arrangements. Send the cable quantity, overall length, LC branch lengths and required jacket with your inquiry. Optical module part numbers can be included for existing DR4 breakout installations.
Recommended inquiry details: quantity, total length, LC branch length, jacket type, branch labeling and optical module model.
Hot Tags: 8 fiber mpo-12 apc to 4× lc duplex upc os2 breakout cable, China 8 fiber mpo-12 apc to 4× lc duplex upc os2 breakout cable manufacturers, suppliers, factory,,mpo-12 apc to 4 lc upc breakout cable,mpo to 4 lc duplex breakout cable,8 fiber mpo to lc breakout cable