Open AccessPhase-shifted type-IIa fiber Bragg gratings for high-temperature laser applications
Author(s) -
Yihan Zha,
Zhiyuan Xu,
Peng Xiao,
Fu-Rong Feng,
Yang Ran,
BaiOu Guan
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.004346
Subject(s) - fiber bragg grating , optics , materials science , phosfos , stopband , laser , distributed bragg reflector , fiber laser , polarization (electrochemistry) , long period fiber grating , wavelength , optoelectronics , polarization maintaining optical fiber , optical fiber , fiber optic sensor , physics , resonator , chemistry
Phase-shifted Bragg gratings have been extensively implemented in superior in-fiber bandpass filters or wavelength selectors, although high-temperature operation remains a challenge. We propose a phase-shifted type-IIa fiber Bragg grating (PSBG-IIa), which can conduct a notch signal as narrow as 4.8 pm within the stopband. The notch's spectrum and wavelength can be adjusted according to the flexible design of the phase-mask translation. Using the thermal resistance as well as the narrow band notch, the PSBG-IIa is implemented in a distributed Bragg reflector laser structure to demonstrate a single longitudinal mode and single polarization laser output that can stabilize robustly at 500 °C. The results demonstrate that the proposed device qualifies as a high-quality optical regulator, without compromise, in the high-temperature region.