FBG-referenced interrogating system using a double-ring erbium-doped fiber laser for high power and broadband

Kyumin Kang, Minsu Jang, Byung Kook Kim, Jun Sik Kim, Myo Taeg Lim, Jinseok Kim

Research output: Contribution to journalArticle

Abstract

In this study, a double-ring erbium-doped fiber (EDF) laser with an optical switch and a fiber Bragg grating (FBG)-referenced interrogating system was developed and demonstrated. This double-ring configuration can achieve high power amplified spontaneous emission, enabling laser oscillation even within the L-band. The output range and signal-to-noise ratio (SNR) of the double-ring EDF laser were measured to be 1512-1610 nm and 55 dB. In addition, the interrogating system using FBGs for reference resulted in precision improvement of ∼25 pm over those achieved in previous studies, reaching a precision of about 7 pm. The high power, broad tuning range, and sufficiently high precision of the proposed interrogating system make it promising for use in FBG-based sensing applications.

Original languageEnglish
Pages (from-to)26870-26881
Number of pages12
JournalOptics Express
Volume28
Issue number18
DOIs
Publication statusPublished - 2020 Aug 31

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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