Graded-Index Polymer Optical Waveguide for Restricted Mode Launch Device Enabling High- Bandwidth, Longer-Reach Multimode Fiber Link

Fabrication of Y-Branched GI Core Polymer Waveguide and its Application to CWDM MUX Device for Multimode Fiber

“…Applying the measured EF curves, the effective modal bandwidth (EMBc) is calculated in order to quantitively verify the RML exciter function. As reported in [15,16,19], the EMBc is calculated by multiplying the differential mode delay (DMD) of a tested MMF with the MPD. Since we investigate the possibility of longer-reach transmissions using widely deployed MMFs, the empirically measured DMD pulse waveform of a 1000-m long OM3 fiber is applied.…”

“…That means that the wide alignment tolerance between the components, which is typically an advantage in large core MMFs, is sacrificed. In order to address the problems, we have proposed to apply a GI core polymer waveguide to an inexpensive RML exciter [19]. Since GI cores work as a rod lens [5], both small S.S. and low launch NA can be achieved.…”