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29 December 2022 Polymer optical waveguide vertical couplers and mode division multiplexers on optical printed circuit boards (Conference Presentation)
Xiaobei Zhang, Chuanlu Deng, Yi Huang, Tingyun Wang
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Proceedings Volume 12314, Optoelectronic Devices and Integration XI; 123140C (2022) https://doi.org/10.1117/12.2647731
Event: SPIE/COS Photonics Asia, 2022, Online Only
Abstract
Polymer optical waveguide vertical optical coupler and mode division (de)multiplexer on optical printed circuit boards have garnered considerable attention. We have studied a stepped laser-ablation method for the fabrication of concave micromirrors in rectangular optical waveguides. The vertical coupling loss can be reduced to 1.83 dB experimentally. Further, based on gray-tone optical lithography technology combined with the overlay alignment method, a spherical concave micro-mirror has been fabricated, with the vertical coupling loss of 1.39 dB. Furthermore, a polymer three-mode (de)multiplexer with two cascaded waveguide directional couplers is proposed. The device can ensure that the E11 mode of the two narrower waveguides are highly coupled into the E21 and E31 modes of the central waveguide. The fabricated device exhibits coupling ratios of 98.07% and 95.43%. Moreover, a two-mode (de)multiplexer has been studied. The coupling ratio and extinction ratio of the fabricated (de)multi
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Xiaobei Zhang, Chuanlu Deng, Yi Huang, and Tingyun Wang "Polymer optical waveguide vertical couplers and mode division multiplexers on optical printed circuit boards (Conference Presentation)", Proc. SPIE 12314, Optoelectronic Devices and Integration XI, 123140C (29 December 2022); https://doi.org/10.1117/12.2647731
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KEYWORDS
Waveguides
Polymer multimode waveguides
Polymers
Micromirrors
Optical printed circuit boards
Multiplexers
Directional couplers
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