Critical coupling in dissipative surface-plasmon resonators with multiple ports

Jaewoong Yoon, Kang Hee Seol, Seok Ho Song, Robert Magnusson

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

We theoretically investigate resonant absorption in a multiple-port surface-plasmon polaritons (SPP) resonator near the condition of critical coupling at which internal loss is comparable to radiation coupling. We show that total absorption is obtainablein a multiple-port system by properly configuring multiple coherent lightwaves at the condition of critical coupling. We further derive analytic expressions for the partial absorbance at each port, the total absorbance, and their sum rule, which provide a non-perturbing method to probe coupling characteristics of highly localized optical modes. Rigorous simulation results modeling a surface-plasmon resonance grating in the multiple-order diffraction regime show excellent agreements with the analytic expressions.

Original languageEnglish
Pages (from-to)25702-25711
Number of pages10
JournalOptics Express
Volume18
Issue number25
DOIs
StatePublished - 2010 Dec 6

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resonators
surface plasmon resonance
polaritons
sum rules
gratings
probes
radiation
diffraction
simulation

Cite this

Yoon, Jaewoong ; Seol, Kang Hee ; Song, Seok Ho ; Magnusson, Robert. / Critical coupling in dissipative surface-plasmon resonators with multiple ports. In: Optics Express. 2010 ; Vol. 18, No. 25. pp. 25702-25711.
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Critical coupling in dissipative surface-plasmon resonators with multiple ports. / Yoon, Jaewoong; Seol, Kang Hee; Song, Seok Ho; Magnusson, Robert.

In: Optics Express, Vol. 18, No. 25, 06.12.2010, p. 25702-25711.

Research output: Contribution to journalArticle

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