Phase-matched multi-layer based polarisation-independent spot-size converter for silicon nanowire
- Submitting institution
-
City, University of London
- Unit of assessment
- 12 - Engineering
- Output identifier
- 476
- Type
- D - Journal article
- DOI
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10.1038/s41598-019-48848-0
- Title of journal
- Scientific Reports
- Article number
- 12362
- First page
- -
- Volume
- 9
- Issue
- 1
- ISSN
- 2045-2322
- Open access status
- Compliant
- Month of publication
- August
- 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
-
1
- Research group(s)
-
-
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- This paper reports a novel polarization-independent spot-size converter (SSC) approach to expand the mode area to reduce coupling loss, being applicable to low-cost mass-produced, large-scale photonic integrated circuits (PICs), offering increased functionality and reliability. Normally, the small mode area causes 14 dB loss when coupled to optical fibre with the >200 times larger mode area, a problem for industrial applications. This paper proposes a novel idea to expand the spot-size laterally by using wider but thinner guides and vertically operating close to cut-off, followed up by evanescently coupling 11 guides, showing an important reduced coupling loss to <3 dB
- Author contribution statement
- -
- Non-English
- No
- English abstract
- -