Low-loss 7-channel visible WDM scheme for implementing efficient data transmission systems over SI-POF

Abstract

In this work, the design of a visible wavelength division multiplexing (WDM) scheme of 7 channels is presented, The multiplexing is performed using a fiber bundle based multiplexer with insertion losses (ILs) lower than 2.2 dB, including the lossesb y LDs' coupling. The channelss eparationi s performed by using a compact demultiplexer based on a reflective diffraction grating. This demultiplexer is optimized to accommodate up to 8 channels in the range from 430 to 655 nm, with ILs lower than 4.5 dB per channel. The analysis done on the proposed WDM scheme shows that the total ILs included by multiplexing and demultiplexing are lower than 7 dB. This is enough to obtain a real improvement in the performance of commercial and experimental transmission systems based on visible WDM over SI-POF.