https://scholars.lib.ntu.edu.tw/handle/123456789/294528
標題: | Transfer-Matrix Approach Based on Modal Analysis for Modeling Corrugated Long-Period Fiber Gratings | 作者: | Chern, Gia-Wei LON A. WANG Lin, Chunn-Yenn |
公開日期: | 九月-2001 | 卷: | 40 | 期: | 25 | 起(迄)頁: | 4476-4486 | 來源出版物: | Applied Optics | 摘要: | A transfer-matrix method is developed for modeling a corrugated long-period fiber grating. Claddingmode resonance in such a corrugated structure can be controlled by the applied tensile stress based on the photoelastic effect. A first-order vectorial perturbation expansion is used to derive the mode fields of the two basic regions under the strain-induced index perturbation. Because the etched cladding radius is much smaller than the unetched radius, the effect of the corrugated structure on cladding modes cannot be treated as a small perturbation. Thus the conventional coupled-mode theory is inadequate for the modeling of such a structure. Based on a self-consistent mode-matching technique, mode coupling within the corrugated structure can be described by a set of transfer matrices. We apply the formulation to the calculation of the transmission spectra of a corrugated long-period grating and compare the calculated with the experimental results. The transfer-matrix approach is found to account well for the features of the transmission spectra of the corrugated long-period gratings. © 2001 Optical Society of America. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/294528 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0012335374&doi=10.1364%2fAO.40.004476&partnerID=40&md5=738f0e97263e6edc04cbf4981b4a1037 |
ISSN: | 1559128X | DOI: | 10.1364/AO.40.004476 | SDG/關鍵字: | Cladding (coating); Light transmission; Matrix algebra; Maxwell equations; Modal analysis; Photoelasticity; Tensile stress; Long-period fiber gratings (LPFG); Fiber Bragg gratings |
顯示於: | 光電工程學研究所 |
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