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2002•Optics LettersRequires access

Cladding-mode-assisted recouplings in concatenated long-period and fiber Bragg gratings

A-Ping Zhang, Xiaoming Tao, Weng-hong Chung, Bai‐Ou Guan, Hwa‐Yaw Tam

Open publisher page 44 citations

Abstract

We investigate new types of mode recouplings in a concatenated grating structure comprising a long-period grating and a fiber Bragg grating. It is demonstrated that the light coupled out to the cladding mode by one of these gratings can be recoupled back to the guided mode by the other grating. Theoretical analysis based on the coupled-mode theory is presented, together with experimental results.

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What this paper is about

We investigate new types of mode recouplings in a concatenated grating structure comprising a long-period grating and a fiber Bragg grating. It is demonstrated that the light coupled out to the cladding mode by one of these gratings can be recoupled back to the guided mode by the other grating. Theoretical analysis based on the coupled-mode theory is presented, together with experimental results.

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Available abstract

We investigate new types of mode recouplings in a concatenated grating structure comprising a long-period grating and a fiber Bragg grating. It is demonstrated that the light coupled out to the cladding mode by one of these gratings can be recoupled back to the guided mode by the other grating. Theoretical analysis based on the coupled-mode theory is presented, together with experimental results.

Key concepts: Fiber Bragg grating, Cladding mode, Optics, Long-period fiber grating, PHOSFOS, Materials science, Grating, Coupled mode theory

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