Free professional tool for ISP engineers and FTTH network designers. Instantly compute insertion loss, power at each subscriber port, and fade margin for PLC and FBT splitters — including dual cascade configurations. Covers GPON (1490 nm / 1310 nm), EPON, and RF video overlay. Optical splitters play a crucial role in Fiber to the Home (FTTH) Passive Optical Network (PON) systems, efficiently distributing a single optical signal to multiple destinations. How to well understand performance of a FBT fiber splitter and PLC optic splitters? The first important thing is to discover. Total Fiber Loss = Fiber Length × Attenuation Coefficient Total Connector Loss = Number of Connectors × Loss per Connector Total Splice Loss = Number of Splices × Loss per Splice Total Link Loss = Fiber Loss + Connector Loss + Splice Loss + Splitter Loss + Safety Margin + Extra System Reserve. dB is the ratio of two powers. For example, for the loss (attenuation) in a segment of optical fiber we have the value at the input of the segment and at its output. Every time you double the ports, you double the signal paths — and the theoretical loss grows by about 3 dB.
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