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3D polymer based 1x4 beam splitter

  • 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.

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Author:Peter Gaso, Dusan Pudis, Dana SeyringerORCiD, Anton Kuzma, Lenka Gajdosova, Tomas Mizera, Matej Goraus
Parent Title (English):Journal of Lightwave Technology
Document Type:Article
Year of publication:2021
Release Date:2020/12/22
Tag:3D splitter; Optical splitter; Polymer; Y-branch splitter
Volume:39. Jg.
Issue:H. 1
First Page:154
Last Page:161
Veröffentlichungsdatum Web: 23. September 2020
Organisationseinheit:Forschung / Forschungszentrum Mikrotechnik
DDC classes:600 Technik, Medizin, angewandte Wissenschaften / 600 Technik
Open Access?:nein
Publicationlist:Seyringer, Dana