Mach-Zehnder crossbar switching and tunable filtering using N-coupled waveguide Bragg resonators Article Swipe
Richard Soref
,
Francesco De Leonardis
,
Vittorio M. N. Passaro
·
YOU?
·
· 2018
· Open Access
·
· DOI: https://doi.org/10.1364/oe.26.014959
YOU?
·
· 2018
· Open Access
·
· DOI: https://doi.org/10.1364/oe.26.014959
This theoretical modeling-and-simulation paper presents designs and projected performance of ~1500-nm silicon-on-insulator 2 x 2 Mach-Zehnder interferometer (MZI) optical crossbar switches and tunable filters that are actuated by thermo-optical (TO) means. A TO heater stripe is assumed to be on the top of each waveguided arm in the interferometer. Each strip-waveguide arm contains an inline set of N-fold coupled, phase-shifted Bragg-grating resonators. To implement accurate and realistic designs, a mixed full-vectorial mathematical model based upon the finite-element, coupled-mode, and transfer-matrix approaches was employed. The Butterworth-filter technique for grating length and weighting was used. The resulting narrowband waveguide-transmission spectral shape was better-than-Lorentzian because of its steeper sidewalls (faster rolloff). The metrics of crossbar switching, insertion loss (IL) and crosstalk (CT), were evaluated for choices of grating strength and TO-induced change in the grating-waveguide refractive index. The predicted ILs and CTs were quite superior to those cited in the literature for experimental and theoretical MZI devices based upon silicon nanobeam resonators. This was true for the Type-I and Type-II resonator addressing discussed here. Finally, we examined the TO-tunable composite filter profiles that are feasible by connecting two or more Type-I MZIs in an optical series arrangement. A variety of narrow filter shapes, tunable over ~2 nm, was found.
Related Topics
Concepts
Crossbar switch
Optics
Resonator
Coupled mode theory
Fiber Bragg grating
Mach–Zehnder interferometer
Waveguide
Insertion loss
Materials science
Grating
Optical switch
Optical filter
Interferometry
Free spectral range
Physics
Refractive index
Optoelectronics
Wavelength
Computer science
Telecommunications
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1364/oe.26.014959
- OA Status
- gold
- Cited By
- 13
- References
- 21
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W2806049560
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W2806049560Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1364/oe.26.014959Digital Object Identifier
- Title
-
Mach-Zehnder crossbar switching and tunable filtering using N-coupled waveguide Bragg resonatorsWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2018Year of publication
- Publication date
-
2018-05-29Full publication date if available
- Authors
-
Richard Soref, Francesco De Leonardis, Vittorio M. N. PassaroList of authors in order
- Landing page
-
https://doi.org/10.1364/oe.26.014959Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.1364/oe.26.014959Direct OA link when available
- Concepts
-
Crossbar switch, Optics, Resonator, Coupled mode theory, Fiber Bragg grating, Mach–Zehnder interferometer, Waveguide, Insertion loss, Materials science, Grating, Optical switch, Optical filter, Interferometry, Free spectral range, Physics, Refractive index, Optoelectronics, Wavelength, Computer science, TelecommunicationsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
13Total citation count in OpenAlex
- Citations by year (recent)
-
2024: 3, 2020: 4, 2019: 4, 2018: 2Per-year citation counts (last 5 years)
- References (count)
-
21Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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