Lim, Sun Do Park, Kyung Jun Eom, Sunghoon Jeong, Je-Myung Kim, Byoung Yoon Lee, Sang Bae 2024-01-20T17:04:45Z 2024-01-20T17:04:45Z 2021-09-02 2011-04-01 0146-9592 https://pubs.kist.re.kr/handle/201004/130455 A single-mode fiber (SMF) acousto-optic tunable filter (AOTF) with a tuning range of more than 300nm is demonstrated. The SMF used in the experiment has a ring of symmetric holes within the cladding, which causes a larger mode-index difference between the first and the second higher-order antisymmetric modes than those of a conventional SMF. As a result, the difference in beatlengths between the core mode and the higher-order modes is highly increased, which makes it possible for the SMF AOTF to exhibit a single resonance peak in the transmission spectrum over the wavelength range of 1: 3-1:6 mu m for given acoustic frequencies of 3: 1-3:8 MHz. (C) 2011 Optical Society of America English OPTICAL SOC AMER PHOTONIC CRYSTAL FIBER GRATINGS Ultrawidely tunable single-mode fiber acousto-optic filter Article 10.1364/OL.36.001101 1 OPTICS LETTERS, v.36, no.7, pp.1101 - 1103 OPTICS LETTERS 36 7 1101 1103 scie scopus 000289251000025 2-s2.0-79956083986 Optics Optics Article PHOTONIC CRYSTAL FIBER GRATINGS fiber acousto-optic