Abstract

An ultra-short fiber Bragg grating with a grating length of 0.2 mm and constant grating period (uniform FBG) is proposed as an integrated dispersive element for spectral analysis in a single-mode glass fiber. This dispersive element is used to set up a fiber optical spectrometer that demonstrated an average spectral resolving power of 825, a pixel resolution of 0.02 nm/pixel, and a 40 nm bandwidth covering the 810–850 nm wavelength range. Furthermore, the dependence of this dispersive element on light polarization was examined, which induces a reduction in the wavelength accuracy up to ±0.05 nm. Finally, the investigated spectrometer to function well as a part of a readout device for fiber Bragg grating sensors is presented. Short uniform Bragg gratings as dispersive elements allow the manufacturing of miniaturized, compact spectrometers without additional focusing components between the FBG and detector.

Ultra-short DBR fiber laser with high-temperature resistance using tilted fiber Bragg grating output coupler

Xuantung Pham, Jinhai Si, Tao Chen, Zhen Niu, Fengqin Huang, and Xun Hou
Opt. Express 27(26) 38532-38540 (2019)

Pulsed single-photon spectrometer by frequency-to-time mapping using chirped fiber Bragg gratings

Alex O. C. Davis, Paul M. Saulnier, Michał Karpiński, and Brian J. Smith
Opt. Express 25(11) 12804-12811 (2017)

Analysis of transmission mode of a matched fiber Bragg grating interrogation scheme

Scott A. Wade, Daniel P. Attard, and Paul R. Stoddart
Appl. Opt. 49(24) 4498-4505 (2010)

Spectral shaping of fiber Bragg gratings based on non-rigid origami

Zhu-Long Xu, Yu-Han Wang, and Kuo-Chih Chuang
Opt. Lett. 46(19) 4825-4827 (2021)

Use of a single-multiple-single-mode fiber filter for interrogating fiber Bragg grating strain sensors with dynamic temperature compensation

Qiang Wu, Agus Muhammad Hatta, Yuliya Semenova, and Gerald Farrell
Appl. Opt. 48(29) 5451-5458 (2009)