Critical Wavelength in the Transmission Spectrum of SMS Fiber Structure Employing GeO2-Doped Multimode Fiber

被引：30

作者：

Tripathi, Saurabh Mani ^{[1
]}

Kumar, Arun ^{[1
]}

Marin, Emmanuel ^{[2
,3
]}

Meunier, Jean-Pierre ^{[2
,3
]}

机构：

[1] Indian Inst Technol Delhi, Dept Phys, New Delhi 110016, India

[2] Univ Lyon, F-42023 St Etienne, France

[3] Univ St Etienne, CNRS, UMR 5516, Lab Hubert Curien, F-42000 St Etienne, France

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2010年 / 22卷 / 11期

关键词：

Intermodal dispersion; multimode interference effects; optical fiber sensor; STRAIN; MODES;

D O I：

10.1109/LPT.2010.2046155

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We demonstrate and explain the existence of a critical wavelength in the transmission spectrum of single-multi-single-mode fiber structures, employing GeO2-doped multimode fibers (MMFs), such that the spectrum shows opposite spectral shift on either side of this wavelength with increasing temperature. Further, the shift is maximum for peaks/dips nearest to this wavelength. The variation of critical wavelength with temperature is also measured. A theoretical account of the observed behavior has been presented and the results are found to be in excellent agreement with the experiments. It is shown theoretically that for a given MMF there should be two critical wavelengths of the opposite nature separated by a large wavelength difference.

引用

页码：799 / 801

页数：3

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