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Optical fiber coupler and PLC splitter structures

Optical fiber coupler (ex. 1x4 splits.)

Optical fiber coupler has bundles of optical fibers fused together, as shown above.

The input light is equally split into two or four parts at the fused region and output via ports.

Optical fiber couplers are most suitable for 1x2 or 1x4 splits since those with few splits are relatively simple to fabricate.

PLC splitter

PLC splitter is waveguide joined with optical fibers, as shown above.

The waveguide made of sheet glass has optical channels in the form of tree-like branches. While being guided through the channels, light is equally divided into Multiple ports (up to 64) and output via ports.

PLC splitters are optimal for 1x2 to 1x64 split applications since they facilitate the construction of many optical circuits in a compact size.

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