This letter presents a new collective and passive thin-film 3D vertical optical coupling structure which is fabricated based-on SU-8 polymer. This technology compensates for the alignment errors of the present passive optical coupling solutions. The structure is collectively manufactured on a matrix of small sized photodiodes on wafer level to vertically couple with a single mode optical fiber. The proposed structure shows a coupling efficiency between the 10μm active area diameter photodetector and single mode fiber (SMF) of 94 % and a 1dB alignment tolerance of ± 9 μm at 1550 nm. Its wafer-level mass-production capability and manufacturing process simplicity make this novel coupling approach a potential solution for short and long-range optical communication applications.
Viana, C., Tegegne, Z.G., Nanni, J., Tartarini, G., Algani, C., Marty, F., et al. (2018). Vertical Optical Coupling Structure Based on Polymer for Small Size and High-Speed Photodetectors. IEEE PHOTONICS TECHNOLOGY LETTERS, 30(21), 1886-1889 [10.1109/LPT.2018.2871268].
Vertical Optical Coupling Structure Based on Polymer for Small Size and High-Speed Photodetectors
Nanni, Jacopo
;Tartarini, Giovanni;
2018
Abstract
This letter presents a new collective and passive thin-film 3D vertical optical coupling structure which is fabricated based-on SU-8 polymer. This technology compensates for the alignment errors of the present passive optical coupling solutions. The structure is collectively manufactured on a matrix of small sized photodiodes on wafer level to vertically couple with a single mode optical fiber. The proposed structure shows a coupling efficiency between the 10μm active area diameter photodetector and single mode fiber (SMF) of 94 % and a 1dB alignment tolerance of ± 9 μm at 1550 nm. Its wafer-level mass-production capability and manufacturing process simplicity make this novel coupling approach a potential solution for short and long-range optical communication applications.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
