Evolution of transmission spectra of double cladding fiber during etching

OPTICS COMMUNICATIONS

卷:402

Article

Ivanov, Oleg V.^1,2  Tian, Fei³  Du, Henry³ 

[1] Russian Acad Sci, Kotelnikov Inst Radio Engn & Elect, Ulyanovsk Branch, Ulitsa Goncharova 48, Ulyanovsk 432011, Russia

[2] Ulyanovsk State Univ, Ulitsa L Tolstogo 42, Ulyanovsk 432017, Russia

[3] Stevens Inst Technol, Dept Chem Engn & Mat Sci, 1 Castle Point Terrace, Hoboken, NJ 07030 USA

关键词: Fiber optics sensor;    Cladding mode;    Fiber etching;    Double cladding fiber;   

DOI  :  10.1016/j.optcom.2017.06.022

来源: Elsevier

【 摘 要 】

We investigate the evolution of optical transmission through a double cladding fiber-optic structure during etching. The structure is formed by a section of SM630 fiber with inner depressed cladding between standard SMF28 fibers. Its transmission spectrum exhibits two resonance dips at wavelengths where two cladding modes have almost equal propagation constants. We measure transmission spectra with decreasing thickness of the cladding and show that the resonance dips shift to shorter wavelengths, while new dips of lower order modes appear from long wavelength side. We calculate propagation constants of cladding modes and resonance wavelengths, which we compare with the experiment. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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