The 2.5G DWDM SFP series provides carrier‑grade 2.67 Gbps optical interfaces optimized for Dense Wavelength Division Multiplexing (DWDM) networks compliant with ITU‑T G.694.1 C‑band grid (100 GHz spacing).
These hot‑pluggable transceivers are designed for OC‑48 (SONET) / STM‑16 (SDH) systems and 2.5 G Ethernet uplinks over single‑mode fiber (SMF) up to 120 km.
Each model uses a cooled DFB laser and APD receiver with DDM support to ensure stable transmission and extended reach in dense optical backbones.
Technical Specifications
- Data Rate: 2.5 Gbps (OC‑48 / STM‑16 / 2.5 G Ethernet / FC‑200)
- Wavelength Plan: ITU‑T G.694.1 DWDM C‑band 100 GHz grid (1528.77 – 1563.86 nm)
- Optical Components: Cooled DFB laser Tx / APD Rx
- Distance Options: 40 km / 80 km / 100‑120 km over SMF
- Optical Connector: Duplex LC (single‑mode fiber)
- Power Consumption: ≤ 2.0 W (typ.) with integrated cooler and DWDM control
- Digital Diagnostics: DDM/DOM per SFF‑8472 for real‑time monitoring
- Compliance: IEEE 802.3 z • ITU‑T G.694.1 • SFP MSA SFF‑8472 • GR‑253‑CORE • Telcordia GR‑468 • RoHS 6
Main Features
- Supports 2.5 Gbps operation per ITU‑T OC‑48/STM‑16 specifications
- DWDM C‑band 100 GHz spacing for up to 40/80/96 channels on a single fiber pair
- Cooled DFB lasers for stable wavelength control over temperature range
- Long‑reach transmission up to 120 km over SMF with APD receiver
- Full Digital Diagnostics Monitoring (DDM/DOM) per SFF‑8472
- Power efficient DWDM link with ≤ 2.0 W consumption
- Compatible with major switch vendors (Cisco, Juniper, Huawei, Nokia etc.)
- Industrial temperature (‑40 °C ~ +85 °C) available for wide area or outdoor deployments
Applications
- DWDM metro and core transmission systems
- OC‑48 (SONET) and STM‑16 (SDH) transport equipment
- 2.5 Gbps CWDM/DWDM Optical Add‑Drop Multiplexers (OADMs)
- Telecom core or backbone long‑haul links
- GPON/EPON uplink and inter‑central‑office connections
- Transparent Ethernet over DWDM networks
Related Keywords: 2.5G DWDM SFP, DWDM OC‑48 SFP, STM‑16 DWDM SFP Transceiver, 2.5 Gbps DWDM Module, C‑Band DFB SFP, ITU‑T G.694.1 SFP 2.5G, Dense WDM SFP, MEFiber DWDM SFP 2.5 G.
FAQ – 2.5G DWDM SFP Optical Transceivers
1. What is a 2.5G DWDM SFP module?
It is a Small Form‑Factor Pluggable optical transceiver operating at 2.5 Gbps on a specific DWDM C‑band wavelength (100 GHz grid) for long‑haul or backbone networks.
2. What standards define DWDM SFP operation?
DWDM modules follow ITU‑T G.694.1 (C‑band Dense WDM grid) and SFP MSA SFF‑8472 for electrical and diagnostic compatibility.
3. What are the available DWDM channels?
Typically 40 to 96 channels within 1528.77 – 1563.86 nm on a 100 GHz spacing, each module manufactured with laser stabilization to target its assigned ITU frequency.
4. What distance can a 2.5G DWDM SFP cover?
Standard options include 40 km, 80 km, and 120 km models depending on optical budget and fiber type.
5. What laser and receiver types are used?
Cooled DFB lasers with integrated thermo‑electric coolers ensure stable wavelength operation; APD receivers extend distance reach.
6. Do 2.5G DWDM SFP modules support DDM/DOM?
Yes. Conforming to SFF‑8472, they include Digital Diagnostics Monitoring for transmit/receive power, temperature, and bias current analysis.
7. What are the main applications of 2.5G DWDM SFPs?
They are used in Metro DWDM rings, long‑haul backbone connections, SONET/SDH OC‑48 systems, and Ethernet over DWDM transport.
8. How does DWDM compare to CWDM at 2.5 Gbps?
DWDM offers narrower channel spacing (100 GHz vs. 20 nm for CWDM), allowing more channels and longer‑reach optical transport.