TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Gaso, Peter A1 - Pudis, Dusan A1 - Seyringer, Dana A1 - Kuzma, Anton A1 - Gajdosova, Lenka A1 - Mizera, Tomas A1 - Goraus, Matej T1 - 3D polymer based 1x4 beam splitter JF - Journal of Lightwave Technology N2 - We present a new concept of 3D polymer-based 1 × 4 beam splitter for wavelength splitting around 1550 nm. The beam splitter consists of IP-Dip polymer as a core and polydimethylsiloxane (PDMS) Sylgard 184 as a cladding. The splitter was designed and simulated with two different photonics tools and the results show high splitting ratio for single-mode and multi-mode operation with low losses. Based on the simulations, a 3D beam splitter was designed and realized using direct laser writing (DLW) process with adaptation to coupling to standard single-mode fiber. With respect to the technological limits, the multi-mode splitter having core of (4 × 4) μm 2 was designed and fabricated together with supporting stable mechanical construction. Splitting properties were investigated by intensity monitoring of splitter outputs using optical microscopy and near-field scanning optical microscopy. In the development phase, the optical performance of fabricated beam splitter was examined by splitting of short visible wavelengths using red light emitting diode. Finally, the splitting of 1550 nm laser light was studied in detail by near-field measurements and compared with the simulated results. The nearly single-mode operation was observed and the shape of propagating mode and mode field diameter was well recognized. KW - Optical splitter KW - 3D splitter KW - Polymer KW - Y-branch splitter Y1 - 2021 SN - 0733-8724 SS - 0733-8724 SN - 1558-2213 SS - 1558-2213 U6 - https://doi.org/10.1109/JLT.2020.3026170 DO - https://doi.org/10.1109/JLT.2020.3026170 N1 - Veröffentlichungsdatum Web: 23. September 2020 VL - 39. Jg. IS - H. 1 SP - 154 EP - 161 ER -