Minimization of Fresnel reflection by antireflection fiber Bragg grating inscribed at the fiber ends

Tzong-Yow Tsai, Zhi Cheng Lee, Hong Xi Tsao, Shih Ting Lin

Research output: Contribution to journalArticle

Abstract

In this paper, we proposed and numerically demonstrated a novel method to effectively minimize Fresnel reflection from a perpendicularly cleaved fiber using a uniform fiber Bragg grating (FBG) inscribed at the fiber end. By matching the reflectivity of an in-line FBG with the reflectivity caused by the glass-air boundary, the FBG acts as a virtual boundary, which provides destructive interference and suppresses Fresnel reflection. We achieved an anti-reflection FBG with a return loss of more than 80 dB by ensuring that the product of the index contrast and grating period number is almost constant, with a value of 0.2695.

Original languageEnglish
Pages (from-to)11510-11515
Number of pages6
JournalOptics Express
Volume27
Issue number8
DOIs
Publication statusPublished - 2019 Apr 15

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Bragg gratings
optimization
fibers
reflectance
gratings
interference
glass
air
products

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Tsai, Tzong-Yow ; Lee, Zhi Cheng ; Tsao, Hong Xi ; Lin, Shih Ting. / Minimization of Fresnel reflection by antireflection fiber Bragg grating inscribed at the fiber ends. In: Optics Express. 2019 ; Vol. 27, No. 8. pp. 11510-11515.
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Minimization of Fresnel reflection by antireflection fiber Bragg grating inscribed at the fiber ends. / Tsai, Tzong-Yow; Lee, Zhi Cheng; Tsao, Hong Xi; Lin, Shih Ting.

In: Optics Express, Vol. 27, No. 8, 15.04.2019, p. 11510-11515.

Research output: Contribution to journalArticle

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