The 622M SFP transceivers deliver reliable optical connectivity for OC‑12 (622.08 Mb/s) SONET, STM‑4 SDH, and Fast Ethernet / ATM applications.
These hot‑pluggable SFP modules are fully compliant with ITU‑T G.957, GR‑253‑CORE, and SFP MSA (SFF‑8472) standards, offering FX, LX, ZX, and BiDi options for distances from 2 km to 80 km over SMF/MMF.
Designed for telecom transport and Ethernet extension, they combine low power consumption, digital diagnostics, and broad platform compatibility.
Technical Specifications
- Data Rate: 622 Mb/s (OC‑12 / STM‑4)
- Wavelength Options: 850 nm · 1310 nm · 1550 nm
- Transmission Distance: 2 km – 80 km over MMF or SMF
- Connector Type: LC Duplex / Simplex (BiDi models)
- Optical Components: VCSEL / FP / DFB Transmitter + PIN/APD Receiver
- Power Consumption: ≤ 1.0 W
- DDM/DOM: Available per SFF‑8472 (optional)
- Compliance: ITU‑T G.957 · GR‑253‑CORE · IEEE 802.3 · SFP MSA · RoHS 6
Main Features
- Supports OC‑12 SONET / STM‑4 SDH data rate at 622 Mb/s
- Hot‑pluggable SFP form factor for switch and transport equipment
- Variety of optical interfaces — SR (850 nm), LR (1310 nm), ZX (1550 nm), and BiDi (single fiber)
- Available link lengths from 2 km to 80 km SMF / MMF
- Low‑power design (≤ 1 W) for dense chassis installations
- Optional digital diagnostic monitoring (DDM/DOM)
- Industrial temperature versions (−40 °C to +85 °C)
- OEM‑compatible (Cisco, Juniper, Huawei, Nokia, and others)
Applications
- SONET OC‑12 / SDH STM‑4 network uplinks and backbones
- Fast Ethernet and ATM over CWDM metro transport
- Telecom add/drop multiplexers, cross‑connects, and access nodes
- Industrial and utility backhaul systems
- Campus and metro edge optical links
Related Keywords: 622M SFP, OC‑12 SFP transceiver, STM‑4 SFP module, 622 Mb/s optical transceiver, SFP 1550 nm 80 km, MEFiber 622M SFP module.
FAQ – 622M SFP Transceivers
1. What is a 622M SFP transceiver?
It is a compact pluggable optical module that transmits and receives data at 622 Mb/s for OC‑12 (SONET) and STM‑4 (SDH) networks.
2. Which standards define 622M SFP performance?
622M SFP modules are defined by ITU‑T G.957 and Telcordia GR‑253‑CORE for optical interface and jitter compliance.
3. What wavelength options are available?
Common options include 850 nm (SX 2 km), 1310 nm (LX 20 km), and 1550 nm (ZX 40–80 km), with BiDi single‑fiber versions available.
4. Can 622M SFP be used in Fast Ethernet interfaces?
Some equipment supports dual‑rate operation (100 Mb/s / 622 Mb/s), though it must be explicitly stated by the platform.
5. What is the maximum link distance supported?
Up to 80 km over single‑mode fiber using a 1550 nm DFB transmitter and APD receiver.
6. Do 622M SFP transceivers include digital diagnostics?
Yes, models with DDM/DOM allow real‑time monitoring of temperature, optical power, and voltage status.
7. Are industrial temperature versions available?
Yes, modules rated −40 → +85 °C are ideal for outdoor and industrial deployments.
8. Where are 622M SFPs commonly used?
They are deployed in SONET/SDH transport systems, Metro Ethernet, and legacy access networks for optical uplinks and aggregation.