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Subwavelength adiab...
Subwavelength adiabatic multimode Y-junctions
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- Lu, Longhui (author)
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, China
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- Liu, Deming (author)
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, China
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- Yan, Max (author)
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, Sweden
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- Zhang, Minming (author)
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, China; Wuhan National Laboratory for Optoelectronics, Wuhan, Hubei, China
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(creator_code:org_t)
- 2019-09-20
- 2019
- English.
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In: Optics Letters. - : Optical Society of America. - 0146-9592 .- 1539-4794. ; 44:19, s. 4729-4732
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Adiabatic multimode Y-junctions are extensively used for the design of multimode silicon photonics devices due to their straightforward principle in achieving mode splitting and manipulation. However, experimentally, the limited feature size achievable by lithography can greatly deteriorate the adiabatic branching property and result in large excess loss and crosstalk. Here, we propose a branch structure consisting of a circular-hole-based chirped subwavelength slot. By optimizing the holes’ radii and positions under our fabrication constraint, we designed and experimentally demonstrated both symmetric and asymmetric approximately adiabatic four-mode Y-junctions with excellent performance close to ideal Y-junctions over a broad wavelength span. Such junctions are compact, CMOS-compatible, exhibit a relatively large fabrication tolerance, and could be extended for more modes; hence they can be potentially deployed for mode-division multiplexing silicon-photonic systems.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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