OLT Optical Module Technical Specifications
OLT optical modules, particularly GPON SFP transceivers, typically support 2.5Gbps downstream, 1.25Gbps upstream, single-fiber bi-directional links, and hot-pluggable SFP form factors.
Key Specifications
Data Rates and Transmission: GPON OLT modules generally support downstream speeds of 2.5Gbps and upstream speeds of 1.25Gbps, enabling high-bandwidth fiber access for multiple clients per port . Port Types and Compatibility: Modules are available in SFP (Small Form-factor Pluggable) format, compliant with the latest SFP MSA standards. They support single-fiber bi-directional transmission, allowing both TX and RX over a single fiber. OLT devices may include multiple GPON ports, GE combo ports, GE SFP ports, and 10GE SFP+ ports for flexible network deployment . Distance and Coverage: Typical GPON OLT modules can cover distances up to 20 km between the OLT and ONUs (Optical Network Units), making them suitable for FTTH (Fiber-to-the-Home) and FTTB (Fiber-to-the-Building) deployments . Power and Sensitivity: Modules operate at 3.3V and often use high-sensitivity APD (Avalanche Photodiode) receivers to ensure reliable signal detection over long distances . Hot-Pluggable and Management Features: Most OLT optical modules are hot-pluggable, allowing easy replacement or upgrades without shutting down the system. OLT devices typically include management ports (MGMT) and CLI ports for configuration and monitoring . Client Capacity: A single GPON port can support up to 128 clients, with multi-port OLTs supporting up to 1,024 clients in total, depending on the device configuration . Environmental and Compliance: Modules are designed to operate across standard temperature ranges and comply with industry standards for optical transceivers, ensuring interoperability and reliability in broadband networks . Example Devices:
- FS OLT3610-08GP4S: 8 GPON ports, 4 GE combo ports, 4 GE SFP ports, 4 10GE SFP+ ports, 1.25Gbps upstream, 2.5Gbps downstream, 20 km coverage .
- Superxon GPON OLT SFP: Hot-pluggable, 3.3V, APD high-sensitivity, SFP MSA compliant, single-fiber bi-directional .
- UISP Fiber OLT: 8-port GPON OLT supporting up to 1,024 clients . These specifications make OLT optical modules suitable for scalable, high-performance GPON deployments, supporting triple-play services and flexible network topologies.
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