Cisco Compatible Transceivers
Cisco Compatible GLC-BX-U-1310D-20 / BX-D-1550D-20 | 1G BiDi SFP 1310/1550nm 20km
Buy Cisco compatible GLC-BX-U-1310D-20 and GLC-BX-D-1550D-20 BiDi SFP modules. 1G single-fiber (1310/1550nm) up to 20km. Reliable and cost-effective.
Cisco Compatible GLC-BX-U-1310D-20 / GLC-BX-D-1550D-20 BiDi SFP Transceiver | 1GBASE-BX, 1310/1550nm, LC Simplex, SMF (20km)
Product Overview
The Cisco Compatible GLC-BX-U-1310D-20 and GLC-BX-D-1550D-20 BiDi SFP Transceivers are high-performance 1Gbps single-fiber optical modules designed for bidirectional communication over single-mode fiber (SMF). Utilizing advanced Wavelength Division Multiplexing (WDM) technology, they operate on 1310nm and 1550nm wavelengths, enabling full-duplex transmission over a single fiber strand.
With a transmission distance of up to 20 kilometers, this wavelength combination provides enhanced optical performance and lower attenuation, making it ideal for networks requiring stable long-distance links compared to standard 1310/1490nm solutions.
Fully compatible with Cisco platforms, these modules offer a reliable, flexible, and cost-effective alternative to OEM optics.
Wavelength Configuration & Pairing
Model | TX | RX | Type |
|---|---|---|---|
GLC-BX-U-1310D-20 | 1310nm | 1550nm | BX-U |
GLC-BX-D-1550D-20 | 1550nm | 1310nm | BX-D |
✔ Correct Pairing:
1310/1550 ↔ 1550/1310 → Full-duplex communication over single fiber
Key Features
- Supports 1Gbps data rate (1000BASE-BX)
- Single-fiber (BiDi) transmission via WDM technology
- TX/RX wavelengths: 1310nm / 1550nm
- Up to 20km transmission over SMF
- LC simplex connector
- Hot-pluggable SFP form factor
- Fully compatible with Cisco SFP ports
- Reduces fiber usage by 50%
- Lower attenuation with 1550nm wavelength
- MSA compliant and fully tested
Technical Specifications
General Parameters
- Form Factor: SFP
- Data Rate: 1Gbps
- Transmission Distance: Up to 20km
- Connector: LC Simplex
- Fiber Type: Single-Mode Fiber (SMF)
Optical Characteristics
- Transmitter Type: DFB Laser
- Receiver Type: PIN Photodiode
- TX Power: -9 ~ -3 dBm
- RX Sensitivity: ≤ -23 dBm
Electrical & Environmental
- Power Consumption: ≤ 1W
- Operating Temperature: 0°C to 70°C
- Storage Temperature: -40°C to 85°C
Compliance
- IEEE 802.3ah (1000BASE-BX)
- SFP MSA compliant
- RoHS compliant
1310/1550 vs 1310/1490 – What’s the Difference?
Parameter | 1310 / 1490 | 1310 / 1550 |
|---|---|---|
Attenuation | Standard | Lower (better reach margin) |
Stability (long links) | Good | Better |
Cost | Lower | Slightly higher |
Typical Use | Standard access | Longer / higher-loss links |
Recommendation:
Choose 1310/1550 when you need more optical margin or better performance on longer or challenging fiber links.
Applications
- FTTx and access networks
- Metro edge deployments
- Enterprise network extensions
- ISP and telecom infrastructure
- Fiber-limited environments
Why Choose This Product
The Cisco-compatible 1310/1550 BiDi SFP series offers:
- Improved link stability with lower attenuation
- Flexible deployment for longer or high-loss links
- Reduced fiber usage by 50%
- Cost-effective alternative to dual-fiber optics
It is ideal for networks where performance and fiber efficiency must both be optimized.
When to Choose This Module
Choose this series if:
✔ Distance requirement is up to 20km
✔ Fiber quality is not ideal or loss is higher
✔ Need more stable long-distance performance
✔ Want to reduce fiber infrastructure cost
Choose 1310/1490 modules if:
✔ Standard links with lower cost priority
Cisco compatible GLC-BX-U-1310D-20 1550nm, GLC-BX-D-1550D-20, 1G BiDi SFP 1310/1550, 1000BASE-BX 20km, single fiber SFP Cisco, LC simplex BiDi module