Cisco Fiber Optic Module GLC-BX40-U-I
Details:
- Form Factor: SFP
- Fiber Type: Single-mode fiber (SMF)
- Wavelength: 1310 nm TX / 1550 nm RX
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Cisco Fiber Optic Module GLC-BX40-U-I:
The Cisco Fiber Optic Module GLC-BX40-U-I is a 1 Gigabit Ethernet SFP fiber optic transceiver designed for long-distance single-mode fiber connections using a single strand of fiber. As a BiDi (bi-directional) module, it transmits data at 1310 nm and receives at 1550 nm, allowing simultaneous two-way communication over the same fiber, which reduces fiber cabling requirements.
This Cisco Module uses LC Simplex connectors and supports link distances up to 40 km (25 miles). Compact and hot-swappable, the GLC-BX40-U-I is compatible with Cisco switch and router, making it ideal for enterprise, metro, and fiber-to-the-home (FTTH) networks that need efficient long-range Gigabit connectivity.
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Introducing Cisco Fiber Optic Module GLC-BX40-U-I:
The Cisco GLC-BX40-U-I is a 1 Gigabit Ethernet SFP fiber optic transceiver designed for long-distance, single-mode fiber connections using a single fiber strand. As a BiDi (bi-directional) module, it transmits at 1310 nm and receives at 1550 nm, enabling two-way communication over the same fiber, which reduces cabling requirements.
It supports link distances up to 40 km (25 miles) and uses LC simplex connectors. Compact and hot-swappable, the GLC-BX40-U-I is compatible with Cisco switches and routers, making it ideal for FTTH deployments, enterprise networks, metro networks, and point-to-point long-range links where efficient and reliable 1 Gbps connectivity is needed.

Uses of Cisco Fiber Optic Module GLC-BX40-U-I:
The Cisco GLC-BX40-U-I is primarily used for long-distance Gigabit Ethernet connections over single-mode fiber, especially in scenarios where fiber availability is limited. Its main uses include:
- Fiber-to-the-Home (FTTH): connecting homes or buildings to a central office using a single fiber strand.
- Enterprise Networks: linking switches or routers in campus or corporate environments over distances up to 40 km.
- Metro Networks: providing cost-efficient, long-range connectivity in city-wide network infrastructures.
- Fiber-Constrained Deployments: enabling bi-directional communication over a single fiber, reducing cabling and installation costs.
- Point-to-Point Links: connecting two locations over long distances with reliable 1 Gbps performance.
Specifications of Cisco Fiber Optic Module GLC-BX40-U-I:
- Type: SFP, 1 Gbps bidirectional (BX-U)
- TX / RX Wavelength: 1310 nm TX / 1550 nm RX
- Distance: Up to 40 km (single-mode fiber)
- Connector: LC/PC
- DOM Support: Yes, per SFF-8472
- Operating Temperature: –40 °C to +85 °C (Industrial)
- Compatible Pair: GLC-BX40-D-I (reverse wavelengths)
Other Recommended:
Cisco Fiber Optic Module GLC-10G-BXU-I
Cisco Fiber Optic Module SFP-10G-BXU-I
| Cable Type |
SMF |
|---|---|
| Data Transfer Rate |
1Gbps |
| Maximum Distance |
40km |
| Wavelength |
1310 nm TX / 1550 nm RX |
| Connector |
LC/PC |
| Monitoring |
DOM |
| Operation temperature |
–40 °C to +85 °C |
| Weight |
75 grams |
| Dimension |
56.5 × 13.4 × 8.5 mm |
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