Characterization of single-mode fiber with fiber Bragg gratings for the design of long-period gratings

Qing Liu; Kin Seng Chiang; Yunqi Liu

doi:10.1109/JLT.2007.900890

Author(s)

Qing Liu
Kin Seng Chiang
Yunqi Liu

Related Research Unit(s)

Department of Electrical Engineering

Detail(s)

Original language	English
Pages (from-to)	2129-2134
Journal / Publication	Journal of Lightwave Technology
Volume	25
Issue number	8
Publication status	Published - Aug 2007

Link(s)

DOI	DOI https://doi.org/10.1109/JLT.2007.900890 Final Published version
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Attachment(s)	Documents 5555414.pdf Post-print, 393 KB, PDF Publisher's Copyright Statement © 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Liu, Q., Chiang, K. S., & Liu, Y. (2007). Characterization of single-mode fiber with fiber Bragg gratings for the design of long-period gratings. Journal of Lightwave Technology, 25(8), 2129-2134. https://doi.org/10.1109/JLT.2007.900890.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-34548190280&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(049a2947-a315-49c9-bc5b-f3d0aad16585).html

Abstract

We propose a simple method to determine the dispersion characteristics of the core mode and the cladding modes of a single-mode fiber for the design of long-period gratings (LPGs). The method is based on measuring the effective indexes of the core mode and the cladding modes from the transmission spectra of a number of slightly tilted fiber Bragg gratings (FBGs) that are composed of properly separated Bragg wavelengths. By using four FBGs written in a photosensitive fiber, we obtained 19 phase-matching curves for the design of LPGs over the (S + C + L)-band, which correspond, respectively, to the couplings between the core mode and the first 19 symmetric cladding modes of the fiber. The accuracy of the phase-matching curves is verified with a number of LPGs fabricated in the same fiber using various grating pitches. © 2007 IEEE.

Research Area(s)

Fiber Bragg gratings (FBG's), Fiber characterization, Gratings, Long-period fiber gratings, Optical fiber dispersion, Optical fiber filters, Optical fibers