The 2.5G BiDi SFP (transceiver modules) provide cost‑efficient 2.5 Gbps single‑fiber connectivity for carrier access and metro networks.
Using WDM technology, each module transmits and receives over a single strand of single‑mode fiber (SMF) through wavelength pairs such as 1270/1330 nm or 1490/1550 nm.
Compliant with IEEE 802.3 z (1000BASE‑BX extension), ITU‑T G.957, and the SFP MSA SFF‑8472, these hot‑pluggable modules enable full‑duplex 2.5 Gbps links up to 80 km, cutting fiber use by 50% compared with standard duplex connections.
Technical Specifications
- Data Rate: 2.5 Gbps (OC‑48 / STM‑16 / 2.5G Ethernet or GPON uplink)
- Wavelength Pairs: 1270 nm Tx / 1330 nm Rx • 1330 nm Tx / 1270 nm Rx; also 1490/1550 or 1550/1490 nm for long‑haul designs
- Distance: 10 km / 20 km / 40 km / 80 km over SMF
- Connector Type: Simplex LC (for single fiber BiDi operation)
- Optical Components: FP or DFB laser transmitter with PIN or APD receiver
- Power Consumption: ≤ 1.0 W (typ.) with DDM support
- Digital Diagnostics: SFF‑8472 DDM/DOM for real‑time temperature and power monitoring
- Compliance: IEEE 802.3 z • ITU‑T G.957 • SFP MSA • RoHS 6 • GR‑253‑CORE • EMC/FCC Part 15 Class B
Main Features
- Full‑duplex 2.5 Gb/s operation over a single strand of SMF via WDM
- Hot‑pluggable SFP design for easy deployment and scalability
- Reduced fiber cost with BiDi (single‑fiber) topology — ideal for FTTx and Metro access
- Supports DDM/DOM per SFF‑8472 for optical diagnostics
- Available in 10 km to 80 km variants for flexible link planning
- Compatible with leading switch vendors (Cisco, Juniper, Huawei, Nokia and others)
- Industrial‑temperature models for outdoor or rugged environments (−40 °C to +85 °C)
- Low EMI and RoHS compliance for reliable environmental integration
Applications
- GPON / EPON OLT and ONU uplink interfaces
- OC‑48 (2.5G) SONET and STM‑16 SDH network equipment
- Metro Ethernet aggregation and switch uplinks
- FTTx access nodes and metro backhaul systems
- Carrier and industrial networks needing 2.5 G links over limited fiber resources
Related Keywords: 2.5G BiDi SFP, 2.5G single‑fiber SFP, BiDi 2.5G transceiver, OC‑48 BiDi SFP module, STM‑16 BiDi SFP, 2.5 Gbps BiDi optical transceiver, MEFiber BiDi SFP 2.5G.
FAQ – 2.5G BiDi SFP Optical Transceivers
1. What is a 2.5G BiDi SFP module?
It is a Small Form‑Factor Pluggable transceiver operating at 2.5 Gbps that uses a single strand of fiber for both transmission and reception via WDM wavelength multiplexing.
2. What applications use 2.5G BiDi SFPs?
They are primarily deployed in GPON/EPON uplinks, Metro Ethernet, and SONET/SDH OC‑48 transport networks.
3. What wavelength combinations are supported?
Typical Tx/Rx pairs include 1270/1330 nm and 1330/1270 nm for standard reach, and 1490/1550 nm or 1550/1490 nm for long‑haul Bx80 designs.
4. How far can 2.5 Gbps BiDi links transmit?
Supported distance options include 10 km, 20 km, 40 km, and 80 km depending on optical budget and fiber type.
5. Can 2.5G BiDi SFPs connect to standard duplex SFPs?
No. Each BiDi module must be paired with its complementary counterpart using reverse Tx/Rx wavelengths for proper communication.
6. Do 2.5G BiDi SFPs support digital diagnostic monitoring?
Yes. Modules compliant with SFF‑8472 include DDM/DOM functions for monitoring optical power, temperature, and voltage in real time.
7. Are industrial‑temperature options available?
Yes, industrial‑grade variants (−40 °C to +85 °C) are available for GPON and outdoor Metro deployments.
8. Why choose 2.5G BiDi over 1.25G BiDi or 10G BiDi modules?
It balances bandwidth and cost—ideal for mid‑tier networks needing higher throughput than Gigabit links without migrating to the 10 G infrastructure layer.
