Fano lines in the reflection spectrum of directly coupled systems of waveguides and cavities: Measurements, modeling, and manipulation of the Fano asymmetry

Jin Lian; Sergei Sokolov; Emre Yüce; Sylvain Combrié; Alfredo De Rossi; Allard P. Mosk

doi:10.1103/PhysRevA.96.033812

Fano lines in the reflection spectrum of directly coupled systems of waveguides and cavities: Measurements, modeling, and manipulation of the Fano asymmetry

Jin Lian^*, Sergei Sokolov, Emre Yüce, Sylvain Combrié, Alfredo De Rossi, Allard P. Mosk

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

We measured and analyzed reflection spectra of directly coupled systems of waveguides and cavities. The observed Fano lines offer insight on the reflection and coupling processes. Very different from side-coupled systems, the observed Fano line shape is not caused by the termini of the waveguide but by the coupling process between the measurement device fiber and the waveguide. Our experimental results and analytical model show that the Fano parameter that describes the Fano line shape is very sensitive to the coupling condition. A movement of the fiber well below the Rayleigh range can lead to a drastic change of the Fano line shape.

Original language	English
Article number	033812
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	96
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.96.033812
Publication status	Published - 8 Sept 2017

Funding

The authors thank Sanli Faez, Pritam Pai, and Willem L. Vos for helpful discussions and Cornelis Harteveld for technical support. This paper is supported by the European Research Council Project No. 279248. A.P.M. acknowledges a Vici grant from the Nederlandse Organisatie voor Wetenschappelijk Onderzoek. APPENDIX:

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title = "Fano lines in the reflection spectrum of directly coupled systems of waveguides and cavities: Measurements, modeling, and manipulation of the Fano asymmetry",

abstract = "We measured and analyzed reflection spectra of directly coupled systems of waveguides and cavities. The observed Fano lines offer insight on the reflection and coupling processes. Very different from side-coupled systems, the observed Fano line shape is not caused by the termini of the waveguide but by the coupling process between the measurement device fiber and the waveguide. Our experimental results and analytical model show that the Fano parameter that describes the Fano line shape is very sensitive to the coupling condition. A movement of the fiber well below the Rayleigh range can lead to a drastic change of the Fano line shape.",

author = "Jin Lian and Sergei Sokolov and Emre Y{\"u}ce and Sylvain Combri{\'e} and Rossi, {Alfredo De} and Mosk, {Allard P.}",

year = "2017",

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doi = "10.1103/PhysRevA.96.033812",

language = "English",

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journal = "Physical Review A - Atomic, Molecular, and Optical Physics",

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Fano lines in the reflection spectrum of directly coupled systems of waveguides and cavities: Measurements, modeling, and manipulation of the Fano asymmetry. / Lian, Jin; Sokolov, Sergei; Yüce, Emre et al.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 96, No. 3, 033812, 08.09.2017.

Research output: Contribution to journal › Article › Academic › peer-review

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T1 - Fano lines in the reflection spectrum of directly coupled systems of waveguides and cavities

T2 - Measurements, modeling, and manipulation of the Fano asymmetry

AU - Lian, Jin

AU - Sokolov, Sergei

AU - Yüce, Emre

AU - Combrié, Sylvain

AU - Rossi, Alfredo De

AU - Mosk, Allard P.

PY - 2017/9/8

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AB - We measured and analyzed reflection spectra of directly coupled systems of waveguides and cavities. The observed Fano lines offer insight on the reflection and coupling processes. Very different from side-coupled systems, the observed Fano line shape is not caused by the termini of the waveguide but by the coupling process between the measurement device fiber and the waveguide. Our experimental results and analytical model show that the Fano parameter that describes the Fano line shape is very sensitive to the coupling condition. A movement of the fiber well below the Rayleigh range can lead to a drastic change of the Fano line shape.

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Fano lines in the reflection spectrum of directly coupled systems of waveguides and cavities: Measurements, modeling, and manipulation of the Fano asymmetry

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