Channel optical waveguide directional couplers
Abstract
We report the first demonstration of channel optical waveguide directional couplers. The closely spaced channel waveguides were fabricated in GaAs by proton implantation. Optical coupling was observed at 1.15 μ with complete light transfer out of the initial channel into adjacent channels in lengths of typically 2 mm.
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The sites are coupled with rate κ1, which one can expect to be much larger than κ for physical realisations, due to the exponential dependence of coupling on separation.
“The sites are coupled with rate κ 1 , which one can expect to be much larger than κ for physical realisations of such a system, due to the exponential dependence of the coupling on the separation between the sites [26].”
From Universal Sign Control of Coupling in Tight-Binding Lattices (2016) · cites this paper as [26]
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- Authors
- Somekh, S., Garmire, E., Yariv, A., Garvin, H. L., & Hunsperger, R. G.
- Affiliations
- California Institute of Technology (US)
- HRL Laboratories (United States) (US)
- ORCID
- Garmire, E.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 1973-01-01
- Volume
- 22
- Issue
- 1
- Pages
- 46-47
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W1975310781
- Cited by
- 275
- References
- 3
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 5 · 2019: 4 · 2018: 6 · 2017: 5 · 2016: 12 · 2015: 10 · 2014: 5 · 2013: 7 · 2012: 6
- FWCI
- 24.27
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Applied Physics Letters (publishedVersion)
- CaltechAUTHORS (California Institute of Technology) (submittedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Photonic and Optical Devices
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photorefractive and Nonlinear Optics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Semiconductor Lasers and Optical Devices
- Keywords
- channel waveguides, directional coupler, optical waveguides, GaAs, proton implantation, optical coupling, light transfer, integrated photonics
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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