Angled Flip-Chip Integration of VCSELs on Silicon Photonic Integrated Circuits
| العنوان: | Angled Flip-Chip Integration of VCSELs on Silicon Photonic Integrated Circuits |
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| المؤلفون: | Mehdi Jahed, Alexander Caut, Jeroen Goyvaerts, Marc Rensing, Magnus Karlsson, Anders Larsson, Gunther Roelkens, Roel Baets, Peter O'Brien |
| المصدر: | Journal of Lightwave Technology. 40:5190-5200 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Optical waveguides, Silicon-nitride photonic integrated circuit, Vertical cavity surface emitting lasers, Couplings, Diffraction gratings, Physics::Optics, Optical feedback, Diffraction, Gratings, Atomic and Molecular Physics, and Optics, Coupling efficiency, Flip-chip integration |
| الوصف: | An investigation of angled flip-chip integration of a singlemode 850 nm vertical-cavity surface-emitting laser (VCSEL) on a silicon nitride photonic integrated circuit (PIC) is presented. Using numerical FDTD simulations, we consider the conditions under which the VCSEL can be integrated at an angle over a grating coupler with high coupling efficiency and low optical feedback. With both coupling efficiency and feedback decreasing with increasing angle, there is a trade-off. With co-directional coupling, first-order diffraction loss sets in at a critical angle, which further reduces the coupling efficiency. No such critical angle exists for contra-directional coupling. We also experimentally demonstrate angled flip-chip integration of GaAs-based 850 nm single transverse and polarization mode VCSELs over grating couplers on a silicon-nitride PIC. At the output grating coupler, light is either collected by an optical fiber or converted to a photocurrent using a flip-chip integrated GaAs-based photodetector. The latter forms an on-PIC optical link. We measured an insertion loss of 21.9, 17.6 and 20.1 dB with a singlemode fiber, multimode fiber and photodetector over the output grating coupler, respectively. |
| وصف الملف: | application/pdf |
| تدمد: | 1558-2213 0733-8724 |
| DOI: | 10.1109/jlt.2022.3172781 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1f90cab2d032144243b2eca4354794a https://doi.org/10.1109/jlt.2022.3172781 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f1f90cab2d032144243b2eca4354794a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15582213 07338724 |
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| DOI: | 10.1109/jlt.2022.3172781 |