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24 January 2020 Manufacturing a 1 × 16 air-cladding polymeric optical splitter for electro-optical printed circuit boards by femtosecond laser
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Abstract

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.

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2020/$28.00 © 2020 SPIE
Qing Tao, Bowen Lu, Zhongsheng Zhai, Jian Cheng, and Dun Liu "Manufacturing a 1 × 16 air-cladding polymeric optical splitter for electro-optical printed circuit boards by femtosecond laser," Optical Engineering 59(1), 017105 (24 January 2020). https://doi.org/10.1117/1.OE.59.1.017105
Received: 4 November 2019; Accepted: 24 December 2019; Published: 24 January 2020
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