Stepwise graded refractive–index profiles for design of a narrow–bandpass filter

Xinrong Wang; Hiroshi Masumoto; Yoshihiro Someno; Lidong Chen; Toshio Hirai

doi:10.1364/AO.40.003746

Stepwise graded refractive–index profiles for design of a narrow–bandpass filter

Xinrong Wang, Hiroshi Masumoto, Yoshihiro Someno, Lidong Chen, Toshio Hirai

FRIS - Advanced Interdisciplinary Research Division

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

4 Citations (Scopus)

Abstract

A combination of stepwise graded refractive-index profiles and a cavity structure is used for designing narrow-bandpass filters of TiO₂/SiO₂ multilayer films upon BK7 glass substrates. Symmetrical profiles of stepwise graded refractive indices result in high transmittance of passbands for the designed filters. The bandwidth of the narrow-bandpass filter is controlled by adjustment of parameters such as the thickness and the number of layers in the multilayer stack. This design is proposed as a new and simple method for coating synthesis of optical filters.

Original language	English
Pages (from-to)	3746-3752
Number of pages	7
Journal	Applied Optics
Volume	40
Issue number	22
DOIs	https://doi.org/10.1364/AO.40.003746
Publication status	Published - 2001 Aug 1

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abstract = "A combination of stepwise graded refractive-index profiles and a cavity structure is used for designing narrow-bandpass filters of TiO2/SiO2 multilayer films upon BK7 glass substrates. Symmetrical profiles of stepwise graded refractive indices result in high transmittance of passbands for the designed filters. The bandwidth of the narrow-bandpass filter is controlled by adjustment of parameters such as the thickness and the number of layers in the multilayer stack. This design is proposed as a new and simple method for coating synthesis of optical filters.",

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AU - Masumoto, Hiroshi

AU - Someno, Yoshihiro

AU - Chen, Lidong

AU - Hirai, Toshio

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AB - A combination of stepwise graded refractive-index profiles and a cavity structure is used for designing narrow-bandpass filters of TiO2/SiO2 multilayer films upon BK7 glass substrates. Symmetrical profiles of stepwise graded refractive indices result in high transmittance of passbands for the designed filters. The bandwidth of the narrow-bandpass filter is controlled by adjustment of parameters such as the thickness and the number of layers in the multilayer stack. This design is proposed as a new and simple method for coating synthesis of optical filters.

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Stepwise graded refractive–index profiles for design of a narrow–bandpass filter

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