Phase-shifted type-IIa fiber Bragg gratings for high-temperature laser applications

Phase-shifted type-IIa fiber Bragg gratings for high-temperature laser applications

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...

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Veröffentlicht in:Optics express 2019-02, Vol.27 (4), p.4346-4353
Hauptverfasser: Zha, Yihan, Xu, Zhiyuan, Xiao, Peng, Feng, Furong, Ran, Yang, Guan, Baiou
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container_issue 4
container_start_page 4346
container_title Optics express
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creator Zha, Yihan
Xu, Zhiyuan
Xiao, Peng
Feng, Furong
Ran, Yang
Guan, Baiou
description 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.
doi_str_mv 10.1364/OE.27.004346
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title Phase-shifted type-IIa fiber Bragg gratings for high-temperature laser applications
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