Отправить статью по E-mail Theoretical Design of Band Pass Filter Utilizing Long Period Fiber Grating Having Cladding Refractive Index Perturbation
- Авторы: Shen J.1, Ji Q.1, Zhang Y.1,2, Ruan X.1,2, Cai Z.1, Li Z.1,2
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Учреждения:
- College of Physics and Electronic Information Engineering, Wenzhou University
- Institute of Laser and Optoelectronics, Wenzhou University
- Выпуск: Том 52, № 6 (2018)
- Страницы: 489-495
- Раздел: Article
- URL: https://journals.rcsi.science/0146-4116/article/view/175569
- DOI: https://doi.org/10.3103/S014641161806010X
- ID: 175569
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Аннотация
In this work, theoretical design of a novel band pass filter based on the turning-around-point long period fiber grating (TAP-LPFG) having cladding index modulation is proposed and demonstrated. Cladding modes are excited by introducing the incident light into the fiber cladding of the input end of the TAP-LPFG. At the grating region, only those cladding modes that satisfy the phase matching condition couple back to the fiber core to obtain the band pass transmission. It is shown that a band pass filter with –3 dB width of from ~115 to ~198 nm with the center wavelength of ~1554.4 nm can be obtained, and the suppression of more than 10 dB for the side-lobes is achieved in a wide wavelength range. This novel TAP-LPFG based device can find applications in optical communications for wide band pass filter.
Об авторах
Jie Shen
College of Physics and Electronic Information Engineering, Wenzhou University
Email: zhihong@wzu.edu.cn
Китай, Wenzhou, 325035
Qiuping Ji
College of Physics and Electronic Information Engineering, Wenzhou University
Email: zhihong@wzu.edu.cn
Китай, Wenzhou, 325035
Yaoju Zhang
College of Physics and Electronic Information Engineering, Wenzhou University; Institute of Laser and Optoelectronics, Wenzhou University
Email: zhihong@wzu.edu.cn
Китай, Wenzhou, 325035; Wenzhou, 325035
Xiukai Ruan
College of Physics and Electronic Information Engineering, Wenzhou University; Institute of Laser and Optoelectronics, Wenzhou University
Email: zhihong@wzu.edu.cn
Китай, Wenzhou, 325035; Wenzhou, 325035
Zhennao Cai
College of Physics and Electronic Information Engineering, Wenzhou University
Email: zhihong@wzu.edu.cn
Китай, Wenzhou, 325035
Zhihong Li
College of Physics and Electronic Information Engineering, Wenzhou University; Institute of Laser and Optoelectronics, Wenzhou University
Автор, ответственный за переписку.
Email: zhihong@wzu.edu.cn
Китай, Wenzhou, 325035; Wenzhou, 325035
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