Nonvolatile waveguide transmission tuning with electrically-driven ultra-small GST phase-change material
- Submitting institution
-
City, University of London
- Unit of assessment
- 12 - Engineering
- Output identifier
- 1380
- Type
- D - Journal article
- DOI
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10.1016/j.scib.2019.04.035
- Title of journal
- Science Bulletin
- Article number
- -
- First page
- 782
- Volume
- 64
- Issue
- 11
- ISSN
- 2095-9273
- Open access status
- Compliant
- Month of publication
- May
- Year of publication
- 2019
- URL
-
-
- Supplementary information
-
-
- Request cross-referral to
- -
- Output has been delayed by COVID-19
- No
- COVID-19 affected output statement
- -
- Forensic science
- No
- Criminology
- No
- Interdisciplinary
- No
- Number of additional authors
-
7
- Research group(s)
-
-
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- This paper reports innovation in electrically-controlled non-volatile ultra-small reconfigurable optical switches, used for cost-efficient signal processing for cloud and data intensive computing. Current lithium niobate Mach-Zhender switches are very long – or the silicon ring resonator design has very narrow bandwidth and both need continuous power. Here, a sub-micron, electrically driven multilevel switch with more than 100 nm bandwidth is reported, exhibiting good self-holding features with potential application to reconfigurable photonic chips with various logic functions. Advantageously GeSbTe, a low-loss phase change material used here is non-volatile, so does not need continuous power and thus consumes very small average power.
- Author contribution statement
- -
- Non-English
- No
- English abstract
- -