Dependence of Fiber Bragg Grating Characteristics on its Length

A fiber Bragg grating (FBG) is normally made with a length of 10 to 30 mm. Depending on the application, however, a short length may be desired, especially in sensor applications for local detection. Under the most common fabrication conditions using the phase mask method, we have fabricated FBGs wi...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 43; no. 7R; p. 4234
Main Authors Ando, Maki, Yamauchi, Makoto, Nakayama, Keisuke, Moriyama, Kenji, Fujita, Keio, Masuda, Yuji, Kimura, Masanori, Mizutani, Yasuo, Kimura, Susumu, Yokouchi, Takashi, Suzaki, Yoshifumi, Nakagawa, Kiyoshi, Ejima, Seiki
Format Journal Article
LanguageEnglish
Published 01.07.2004
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Summary:A fiber Bragg grating (FBG) is normally made with a length of 10 to 30 mm. Depending on the application, however, a short length may be desired, especially in sensor applications for local detection. Under the most common fabrication conditions using the phase mask method, we have fabricated FBGs with lengths ranging from 0.35 to 15 mm using different excimer laser irradiation times. Although 0.35-mm-long FBGs can be made with laser exposure times exceeding 1 h, the practical minimum FBG length appears to be around 3 mm with exposure times in the range of 3 to 5 min.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.43.4234