LC Duplex Singlemode Coupler — Panel-Mount, Ceramic Ferrules
The TE Connectivity 2-6457567-4 is a duplex LC-to-LC singlemode coupler, built to join two LC-terminated fibers in a panel-mount flange housing. Both adapter ends are LC receptacles — this is a straight-through coupler for linking patch cables or pigtails, not a hybrid format converter. The duplex format carries two fibers in one housing, which is the standard arrangement for bidirectional transmit/receive pairs in singlemode links. The ferrule material is ceramic, the expected choice for singlemode alignment where sub-micron core concentricity matters. Mounting is via a panel flange with snap-in retention — no hardware required beyond the panel cutout.
Singlemode Duty and Duplex Format
Singlemode couplers like this one are designed for the 9/125 µm core/cladding fiber used in long-haul, metro, and high-bandwidth data center links. The duplex format means the coupler accepts two LC connectors side by side — one for transmit, one for receive — in a single panel cutout. If your system uses single-fiber simplex connectors, you would need two simplex couplers instead; the duplex housing saves panel space and keeps the Tx/Rx pair together.
This coupler mounts into a panel cutout via a flange with snap-in clips — push it in from the front until the latches engage. No screws or nuts are needed, which speeds installation in patch panels, wall boxes, or equipment chassis. The dust caps protect the ceramic alignment sleeves during handling; remove them before inserting the LC connectors.