Allied Telesis AT-SPBD10-13 – 1000BASE-BX BiDi SFP 10km 1310TX/1490RX

Overview

The Allied Telesis AT-SPBD10-13 is a 1000BASE-BX bidirectional SFP transceiver that carries full-duplex Gigabit Ethernet over a single strand of single-mode fibre. It transmits at 1310nm and receives at 1490nm, enabling bidirectional operation on one fibre using wavelength-division multiplexing. This module pairs with the AT-SPBD10-14 (1490nm TX / 1310nm RX) at the far end to form a complete single-fibre GbE link. The 10km reach and hot-swappable SFP form factor make it practical for access and distribution links where fibre strand count is limited.

Description

BiDi (bidirectional) SFP transceivers exist to solve a common infrastructure constraint: fibre strands are limited, but network capacity requirements are not. Rather than consuming a fibre pair for each GbE link, a BiDi pair like the AT-SPBD10-13 and AT-SPBD10-14 uses a single strand to carry traffic in both directions simultaneously by separating the transmit and receive wavelengths. The AT-SPBD10-13 transmits on 1310nm and receives on 1490nm. At the opposite end of the fibre, the AT-SPBD10-14 transmits on 1490nm and receives on 1310nm — the two modules are complementary and must be paired together for correct operation. The 10km reach covers the same distance as a standard 1000BASE-LX link over OS1 or OS2 single-mode fibre. The LC simplex connector is the appropriate interface for single-fibre BiDi operation. This approach is common in access network builds where the fibre count between a distribution switch and a remote access point is constrained, or in fibre-to-the-node architectures where strand efficiency directly reduces infrastructure cost. The SFP form factor is supported across Allied Telesis switches and media converters. Hot-swap capability allows module replacement without system downtime. For BiDi pairing advice and stock queries, contact Creation Networks at creationnetworks.net.

Key Features

• Single-Fibre Bidirectional Operation: Carries full-duplex GbE over one fibre strand, reducing infrastructure cost in fibre-constrained environments by 50% compared to dual-fibre solutions.
• 1310nm TX / 1490nm RX: Defined wavelength pairing ensures correct BiDi operation when installed opposite an AT-SPBD10-14 at the far end.
• 10km Single-Mode Reach: Supports inter-building and access-layer links up to 10 kilometres over OS1/OS2 SMF.
• 1000BASE-BX Compliance: Conforms to IEEE 802.3ah 1000BASE-BX10 standard for interoperability with compliant equipment.
• LC Simplex Connector: Single-fibre LC interface for straightforward connection to BiDi-capable patch panels and distribution frames.
• Hot-Swappable SFP: Field-replaceable without powering down the host switch or affecting adjacent ports.
• Must Pair with AT-SPBD10-14: Correct operation requires the complementary AT-SPBD10-14 (1490nm TX / 1310nm RX) at the opposite fibre end.

Technical Specifications