PLC planar optical waveguide for light
Planar Lightwave Circuit (PLC) utilizes semiconductor processes such as photolithography, etching, and deposition to create optical paths on substrates, enabling the propagation of optical signals. A typical optical waveguide structure consists of three parts: a high-refractive-index core, a. This paper reviews the recent progress and future prospects of PLC technologies including arrayed-waveguide grating multiplexers, optical add/drop multiplexers, programmable. These channels are typically less than 10 microns across and are patterned using microlithography techniques.
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