High optical coupling efficiency of polymer microlens and pillar on single mode fiber for silicon photonics
High optical coupling efficiency of polymer microlens and pillar on single mode fiber for silicon photonics
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DOI：
10.35848/1347-4065/ac6386
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发表时间：
2022-04
影响因子：
1.5
通讯作者：
Yoshiki Kamiura;Taiga Kurisawa;C. Fujikawa;O. Mikami
中科院分区：
文献类型：
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作者：
Yoshiki Kamiura;Taiga Kurisawa;C. Fujikawa;O. Mikami
硅光子学技术最近引起了相当大的关注。然而，由于硅光子（SiPh）芯片和单模光纤（SMF）之间的光斑尺寸差异导致的低耦合效率仍然是一个具有挑战性的问题。我们已经提出了一个独特的组合，一个微透镜和一个支柱的小面的SMF。然而，支柱可能难以保持信号光束为1的单一模式。55 μm波长，由于空气包层。在这项研究中，我们明确了支柱的长度，可以支持单模通过模拟和实验。通过优化设计，获得了与SiPh芯片相同水平的光斑尺寸。通过对SiPh芯片的测试表明，该耦合器件具有很高的耦合效率，并可应用于多芯光纤。
Silicon photonics technology has attracted considerable attention these days. However, the low coupling efficiency due to the difference in spot size between silicon photonic (SiPh) chips and single-mode fibers (SMFs) remains a challenging issue. We have already proposed a unique combination of a microlens and a pillar on the facet of SMF. However, the pillar may have difficulty in keeping a single mode for a signal beam of 1. 55 μm wavelength due to air cladding. In this study, we clarified the length of the pillar that can support the single mode through simulations and experiments. By the optimum designing, the spot size as the same level as the SiPh chip was obtained. We could show that our coupling device provides high coupling efficiency with a test sample of SiPh chip, and this device also can be applied to multi-core fibers.