Technical study of visible light wavelength division multiplexing using polymer optical fiber

Visible light wavelength division multiplexing (VWDM) experiment was performed using polymer opticalfiber (POF). Lights of two different wavelengths (650 and 530 nm) were sent to a single POF. Red light(650 nm) was used for 100-Mb/s full duplex IP data transmission and green light (530 nm) was used forvoice signal transmission. Light sources are light-emitting diodes (LEDs). A POF coupler (splitter) andthe prisms were employed as multiplexer and demultiplexer, respectively. The channel isolation and insertloss were measured, which are 20.5 and 17.65 dB for 650-nm channel respectively, and 19.16 and 20.55 dBfor 530 nm one respectively.