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Active asymmetric plasmonic Bragg gratings
- Karami, Keshmarzi E.;
- Hahn, C.;
- Song, S.H.;
- Oh, C.H.;
- Tait, R.N.;
- 외 1명
Citations
SCOPUS
1초록
We discuss asymmetric reflectance in surface plasmon Bragg gratings incorporating optical gain, referred to as active asymmetric surface plasmon Bragg gratings. It is shown that balanced modulation of index and gain/loss with quarter pitch spatial shift causes unidirectional coupling between contra-propagating modes in long-range surface plasmon polariton Bragg gratings. Such gratings operate at the breaking threshold of parity-time symmetry (exceptional point). Two active asymmetric surface plasmon Bragg gratings designs are proposed and their performance is examined through modal and transfer matrix method computations. ? 2016 SPIE.
키워드
Bragg gratings; Electromagnetic wave polarization; Surface plasmon resonance; Transfer matrix method; Exceptional points; Long-range surface plasmons; Parity-time symmetries; Propagating mode; Surface plasmons; Unidirectional coupling; Plasmons
- 제목
- Active asymmetric plasmonic Bragg gratings
- 저자
- Karami, Keshmarzi E.; Hahn, C.; Song, S.H.; Oh, C.H.; Tait, R.N.; Berini, P.
- 발행일
- 2016-00
- 유형
- Conference Paper
- 저널명
- Proceedings of SPIE - The International Society for Optical Engineering
- 권
- 9920
- 언어
- ENG
- 출판사
- SPIE
- 발행국가
- 미국
- ISSN
- P 0277-786X