{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,1,8]],"date-time":"2025-01-08T05:23:40Z","timestamp":1736313820816,"version":"3.32.0"},"reference-count":50,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2021,4,27]],"date-time":"2021-04-27T00:00:00Z","timestamp":1619481600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"crossref","award":["NRF-2019R1A2C1084933"],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea (NRF)","doi-asserted-by":"crossref","award":["NRF-2020R1A6A1A03047771"],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Korea Government (MOTIE)","award":["P000845"]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"We demonstrated a 1.1-\u00b5m band extended wideband wavelength-swept laser (WSL) that combined two semiconductor optical amplifiers (SOAs) based on a polygonal scanning wavelength filter. The center wavelengths of the two SOAs were 1020 nm and 1140 nm, respectively. Two SOAs were connected in parallel in the form of a Mach-Zehnder interferometer. At a scanning speed of 1.8 kHz, the 10-dB bandwidth of the spectral output and the average power were approximately 228 nm and 16.88 mW, respectively. Owing to the nonlinear effect of the SOA, a decrease was observed in the bandwidth according to the scanning speed. Moreover, the intensity of the WSL decreased because the oscillation time was smaller than the buildup time. In addition, a cholesteric liquid crystal (CLC) cell was fabricated as an application of WSL, and the dynamic change of the first-order reflection of the CLC cell in the 1-\u00b5m band was observed using the WSL. The pitch jumps of the reflection band occurred according to the electric field applied to the CLC cell, and instantaneous changes were observed.<\/jats:p>","DOI":"10.3390\/s21093053","type":"journal-article","created":{"date-parts":[[2021,4,28]],"date-time":"2021-04-28T01:18:20Z","timestamp":1619572700000},"page":"3053","source":"Crossref","is-referenced-by-count":7,"title":["1.1-\u00b5m Band Extended Wide-Bandwidth Wavelength-Swept Laser Based on Polygonal Scanning Wavelength Filter"],"prefix":"10.3390","volume":"21","author":[{"given":"Gi Hyen","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Physics, College of Natural Sciences, Chungnam National University, 99 Daehak-ro Yuseong-gu, Daejeon 34134, Korea"}]},{"given":"Soyeon","family":"Ahn","sequence":"additional","affiliation":[{"name":"Department of Physics, College of Natural Sciences, Chungnam National University, 99 Daehak-ro Yuseong-gu, Daejeon 34134, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4867-543X","authenticated-orcid":false,"given":"Jinhwa","family":"Gene","sequence":"additional","affiliation":[{"name":"Institute of Quantum Systems (IQS), Chungnam National University, 99 Daehak-ro Yuseong-gu, Daejeon 34134, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9944-8993","authenticated-orcid":false,"given":"Min Yong","family":"Jeon","sequence":"additional","affiliation":[{"name":"Department of Physics, College of Natural Sciences, Chungnam National University, 99 Daehak-ro Yuseong-gu, Daejeon 34134, Korea"},{"name":"Institute of Quantum Systems (IQS), Chungnam National University, 99 Daehak-ro Yuseong-gu, Daejeon 34134, Korea"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"843","DOI":"10.1364\/OL.23.000843","article-title":"Interrogation of fiber grating sensor arrays with a wavelength-swept fiber laser","volume":"23","author":"Yun","year":"1998","journal-title":"Opt. 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