| Download | - View final version: Polarization and wavelength agnostic nanophotonic beam splitter (PDF, 909 KiB)
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| Link | https://arxiv.org/abs/1807.05952 |
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| Author | Search for: González-Andrade, David; Search for: Lafforgue, Christian; Search for: Durán-Valdeiglesias, Elena; Search for: Le Roux, Xavier; Search for: Berciano, Mathias; Search for: Cassan, Eric; Search for: Marris-Morini, Delphine; Search for: Velasco, Aitor V.; Search for: Cheben, Pavel1ORCID identifier: https://orcid.org/0000-0003-4232-9130; Search for: Vivien, Laurent; Search for: Alonso-Ramos, Carlos |
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| Affiliation | - National Research Council of Canada. Advanced Electronics and Photonics
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| Format | Text, Article |
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| Abstract | High-performance optical beam splitters are of fundamental importance for the development of advanced silicon photonics integrated circuits. However, due to the high refractive index contrast of the silicon-on-insulator platform, state of the art Si splitters are hampered by trade-offs in bandwidth, polarization dependence and sensitivity to fabrication errors. Here, we present a new strategy that exploits modal engineering in slotted waveguides to overcome these limitations, enabling ultra-wideband polarization-insensitive optical power splitters, with relaxed fabrication tolerances. The proposed splitter relies on a single-mode slot waveguide which is transformed into two strip waveguides by a symmetric taper, yielding equal power splitting. Based on this concept, we experimentally demonstrate -3± 0.5 dB polarization-independent transmission in an unprecedented 390 nm bandwidth (1260 - 1650 nm), even in the presence of waveguide width deviations as large as ± 25 nm. |
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| Publication date | 2018-06-25 |
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| Publisher | Cornell University Library |
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| Language | English |
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| Peer reviewed | No |
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| NPARC number | 23004249 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 25609965-9273-4eb6-a3bb-eb3011dac335 |
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| Record created | 2018-10-15 |
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| Record modified | 2020-05-30 |
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