The amplified optical signal passes through 80km of bare fiber and is further attenuated by an optical attenuator. This will give you an idea of how much you can. Among the optical solutions designed for extended reach, SFP 80km modules are widely used to support stable Gigabit Ethernet transmission over single-mode fiber across long spans without intermediate amplification. An SFP 80km optical transceiver is engineered to deliver reliable 1Gbps connectivity. While 1550nm offers the lowest attenuation (~0. 22 dB/km), it introduces a massive chromatic dispersion penalty that can effectively blind a receiver long before the power budget is exhausted. They are typically deployed in metro networks, inter-campus backbones, and data center interconnect (DCI) scenarios that require up to 80km. Migrating to a high-density, plug-and-play 100G QSFP28 ZR4 solution offers a leaner, "de-coupled" option that removes the active wave-shelf entirely. ta rate of 10Gbps and 80km transmission distance with SMF. This module is designed for single mode fiber and operates at a nominal DWDM avelength from 1528nm to 1566nm as specified by the ITU-T.
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