Based on the beam propagation method, a compact 1 × 16 polymeric optical splitter with center wavelength ∼1550 nm is designed for electro-optical printed circuit board (EOPCB). The length of the optical splitter is 20,000 μm. Spacing between each output port is 127 μm. The cross section of the optical splitter is 10 μm × 10 μm. The silicon glass is chosen as a substrate material of the optical splitter, the cladding material of the optical splitter is air, and the core material of the optical splitter is SU8 polymer. It is fabricated for a 1 × 16 chip-to-chips optical interconnect by femtosecond laser. The testing results show that average insertion loss per channel for the optical splitter is IL ≤ 20 dB and the uniformity for the optical splitter is Cu ≈ 1.42 dB. It is very suitable for the optical interconnection of EOPCB.
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