Referenced Items are not available for this document.
We analyze transitions from low-loss “magic” width to strongly radiating “anti-magic” width thin, shallow-ridge silicon-on-insulator waveguides operating in the transverse magnetic mode, using a vector eigenmode expansion method. It is shown that the transition produces a beam of transverse electric (TE) radiation with a pattern, which is strongly dependent on the geometry of the transition. It is shown that controlled, highly coherent, and low-divergence TE beam can be emitted from a relatively compact linear taper. Methods for side lobe suppression are also analyzed and avenues for more sophisticated beam shaping are identified drawing inspiration from leaky wave antennas.
Published in:
Photonics Technology Letters, IEEE
(Volume:25
,
Issue:
2
)
Date of Publication: Jan.15, 2013
- Page(s):
- 163 - 166
- ISSN :
- 1041-1135
- INSPEC Accession Number:
- 13219004
- Digital Object Identifier :
- 10.1109/LPT.2012.2230620
- Product Type:
- Journals & Magazines
- Date of Publication :
- 29 November 2012
- Date of Current Version :
- 09 January 2013
- Issue Date :
- Jan.15, 2013
- Sponsored by :
- IEEE Photonics Society
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