Loss-Modulation-Based Wavelength-Range Shifting of Tunable EDF Ring Laser with Cascaded-Chirped Long-Period Fiber Grating for Temperature Measurement.

Koken Fukushima, Manuel Guterres Soares, Atsushi Wada, Satoshi Tanaka, Fumihiko Ito

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Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 authors.

Koken FukushimaDepartment of Communications Engineering, National Defense Academy, 1-10-20 Hashirimizu, Kanagawa, Yokosuka 239-8686, Japan.ORCID 0000-0002-6364-5696

Manuel Guterres SoaresDepartment of Communications Engineering, National Defense Academy, 1-10-20 Hashirimizu, Kanagawa, Yokosuka 239-8686, Japan.

Atsushi WadaDepartment of Communications Engineering, National Defense Academy, 1-10-20 Hashirimizu, Kanagawa, Yokosuka 239-8686, Japan.ORCID 0000-0002-6556-4398

Satoshi TanakaDepartment of Communications Engineering, National Defense Academy, 1-10-20 Hashirimizu, Kanagawa, Yokosuka 239-8686, Japan.

Fumihiko ItoGraduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu-cho, Shimane, Matsue 690-8504, Japan.

Funding

Japan Society for the Promotion of Science JP18H01451

6 · The paper itself

Abstract

A novel tunable Erbium-doped fiber ring laser (EDFRL) with a cascaded-chirped long-period fiber grating (C-CLPG) as a wavelength selection filter is proposed from the viewpoint of the sensor use, in which a variable optical attenuator (VOA) is employed as an intracavity loss modulator to change the oscillation wavelength region so that the resultant tuning wavelength range is widened. In the demonstrative experiment for temperature measurements, oscillation over the wavelength range of 12.85 nm (1557.62~1570.47 nm), which is more than three times range of the previously presented laser and is equivalent to 64 °C in terms of temperature change, was achieved, while a single-wavelength oscillation was maintained. In addition, a practical technique for realizing a temperature measurement by combining with the VOA control is also discussed.

Indexed as

cascaded-chirped long-period fiber gratings (C-CLPG)Erbium-doped fiber ring lasers (EDFRL)intracavity loss modulationlong-period fiber gratings (LPG)optical fiber sensorstemperature sensingtunable lasersvariable optical attenuator (VOA)

Identifiers

PMID33801722

DOI10.3390/s21072342

PMCPMC8036910

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