Efficient Multiplexer/Demultiplexer for Visible WDM Transmission over SI-POF Technology

摘要

A five channel step index plastic optical fiber proposal for a multiplexer/demultiplexer having insertion losses () of 2.9–4 dB, pass bandwidths at −3 dB > 30 nm, crosstalk attenuation >30 dB and size of ∼65 mm × 55 mm, is demonstrated. It is based on a reflective diffraction grating with blazed profile and an aspheric lens. The theoretical analysis presented is used to further reduce the system size to ∼37 mm × 30 mm and to increase the number of channels to 8 keeping < 4.5 dB. Experimental results have good agreement with theoretical expectations.