Strain and Temperature Sensing Characteristics of Single-Mode–Multimode–Single-Mode Structures

Tripathi, Saurabh Mani; Kumar, Arun; Varshney, R. K.; Kumar, Yogesh; Marin, Emmanuel; Meunier, Jean-Pierre

doi:10.1109/jlt.2008.2008820

Cited by 259 publications

(148 citation statements)

References 17 publications

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“…The underlying operating principle of sensors based on SMS fiber structures is multimode interference excited between modes in the multimode fiber (MMF) section, which can be influenced by external perturbation [10][11][12]. Thus SMS fiber structures can be used as sensors for measurands such as temperature and strain [13][14][15][16][17]. Recently Antonio-Lopez etc proposed to use an SMS fiber structure to realize a stable optofluidically tunable fiber laser with wide tunable wavelength range of 40 nm [18].…”

Section: Introductionmentioning

confidence: 99%

High sensitivity SMS fiber structure based refractometer – analysis and experiment

Wu¹,

et al. 2011

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we have investigated the influence of multimode fiber core (MMFC) diameters and lengths on the sensitivity of an SMS fiber based refractometer. We show that the MMFC diameter has significant influence on the refractive index (RI) sensitivity but the length does not. A refractometer with a lower MMFC diameter has a higher sensitivity. Experimental investigations achieved a maximum sensitivity of 1815 nm/ RIU (refractive index unit) for a refractive index range from 1.342 to 1.437 for a refractometer with a core diameter of 80 µm. The experimental results fit well with the numerical simulation results. fiber Bragg grating and multimode fibers using an intensity-based interrogation method", 2008 Optical Society of America

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Section: Introductionmentioning

confidence: 99%

High sensitivity SMS fiber structure based refractometer – analysis and experiment

Wu¹,

et al. 2011

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“…The field amplitude is determined by the modal overlap between the fundamental mode of the SMF and the th mode of the MMF, so if we define as the normalized fundamental mode field of the SMF, may be written as (1) Different guided modes have different propagation constants, so they will develop a phase difference while propagating along the MMF length. At the lead-out splice these fields are then coupled back to fundamental mode of the SMF, and the power in the lead-out fiber can be written as [18] ( 2) where, is the propagation constant of th mode and is the length of the MMF section.…”

Section: Theoretical Analysismentioning

confidence: 99%

Single-Multi-Single Mode Structure Based Band Pass/Stop Fiber Optic Filter With Tunable Bandwidth

Tripathi

Kumar

Marin

et al. 2010

J. Lightwave Technol.

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Abstract-We present a simple, efficient and easy to fabricate single-multi-single mode (SMS) fiber-based tunable bandwidth optical bandpass/bandstop filter. The device exploits the transmission characteristics of an SMS structure near its critical wavelength. Using both temperature and strain tuning, we show that the device can be switched between band pass to band stop modes and that the filter bandwidth in each mode can be dynamically tuned. We present a theoretical analysis of the observed behavior and obtain excellent agreement with the experimental observations. Index Terms-Band pass filter, modal interference, optical fiber components, wavelength filter.

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“…Instead of applying Eq. (1) to obtain the sensor spectrum, a more accurate model employs analysis of modal coupling and propagation in the multimode waveguide [18][19][20][21]. Light in the SMF is carried by the LP 01 mode of the SMF with normalized mode profile Φ 0 .…”

Section: A Exact Field Expressionmentioning

confidence: 99%

Multimode excitation-induced phase shifts in intrinsic Fabry–Perot interferometric fiber sensor spectra

Wang

2010

Appl. Opt.

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We report the modal analysis of optical fiber single-mode-multimode-single-mode intrinsic Fabry-Perot interferometer sensors. The multimode nature of the Fabry-Perot cavity gives rise to an additional phase term in the spectrogram due to intermodal dispersion-induced wavefront distortion, which could significantly affect the cavity length demodulation accuracy. By using an exact model to analyze the modal behavior, this phase term is explained by employing a rotating vector approach. Comparison of the theoretical analysis with experimental results is presented.

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Strain and Temperature Sensing Characteristics of Single-Mode–Multimode–Single-Mode Structures

Cited by 259 publications

References 17 publications

High sensitivity SMS fiber structure based refractometer – analysis and experiment

High sensitivity SMS fiber structure based refractometer – analysis and experiment

Single-Multi-Single Mode Structure Based Band Pass/Stop Fiber Optic Filter With Tunable Bandwidth

Multimode excitation-induced phase shifts in intrinsic Fabry–Perot interferometric fiber sensor spectra

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