155MBPS SFP 120KM OPTICAL TRANSCEIVER CUTTING EDGE

What is a 155Mbps optical module

What is a 155Mbps optical module

A 155M SFP is an optical SFP module designed to transmit data at a fixed rate of 155Mbps, primarily used in SDH STM-1 and SONET OC-3 networks. Despite the dominance of Gigabit and 10G optics, 155M SFP modules are still actively purchased today —not as legacy leftovers, but as deliberate, cost-efficient. Optcore's OSP155-3120xCR is a high-performance small form factor pluggable (SFP) transceiver module for duplex optical data communications such as Fast Ethernet and SDH/SONET OC-3/STM-1. The high-speed laser diode and photo diode are provided as a light source and a detector, respectively.

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SFP optical module interface types

SFP optical module interface types

Singlemode and multimode SFP modules are two primary categories of hot-swappable optical modules used in optical networks. Each module type uses LC interfaces, and professionals commonly group them together under the name LC SFP modules. SFP (Small Form-factor Pluggable) is a compact, hot-pluggable network interface module used to connect network devices (switches, routers, firewalls) to fiber optic or copper cables.

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SFP and optical module parameters

SFP and optical module parameters

This technical documentation explains how to read and interpret an optical transceiver datasheet, with a practical focus on commonly used SFP module datasheet covering both 1G (1000BASE-SX / 1000BASE-LX) and 10G (10GBASE-SR / 10GBASE-LR) optical transceivers. SFP (Small Form-factor Pluggable) optical modules are compact, hot-pluggable transceivers that enable network equipment to connect seamlessly to fiber and copper links. Understand the core function, compare data rates (1G to 25G), learn critical compatibility rules, and follow our 5-step checklist for selecting the perfect SFP optical module for your network build. Buying SFP optics gets painful when the switch refuses to "see" a module or the link flaps after install.

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