Higher-order core mode resonances in a mechanically induced long-period holey fiber grating

Ceballos-Herrera, Daniel E.; Torres-Gómez, I.; Martı́nez-Rios, A.; Sanchez-Mondragon, J. J.

doi:10.1007/s10043-009-0120-6

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…Compared with other methods, mechanical pressure is a flexible technique of low cost and also no previous process to prepare the fiber is required. Furthermore, this technique benefits from being a reversible process [16], which means that once the mechanical piece is removed, the mechanical integrity of the fiber is kept. This is quite useful for research work and for field devices.…”

Section: Long Period Fiber Gratings Fabrication Methodsmentioning

confidence: 99%

Optical Fiber Torsion Sensor with Mechanically Induced Long Period Fiber Gratings in Rare-Earth Doped Fibers

Pulido-Navarro¹,

Álvarez-Chávez²,

Ceballos-Herrera³

et al. 2014

OPJ

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In this work wavelength sensitivity in mechanically induced long period fiber gratings (MLPFG) is analyzed. This analysis is first carried out both in standard single-mode fiber SMF-28 and in Er-doped fibers. The mechanical analysis for both types of fibers under different torsion conditions is presented. In order to apply the torsion one of the fiber ends is fixed while torsion is applied on the other end. A MLPFG whose period is 503 µm is used to press the fiber after torsion is applied. This allows for micro curvatures to be formed on the fiber, which in turn generates a periodical index perturbation on it. Here, it was noted that the sensitive wavelength shift of the rejection bands is bigger for Er-doped fibers. For a torsion of 6 turns applied to 10 cm of doped fiber the wavelength peaks can be moved up to 25 nm, which is longer to what was detected on standard fibers. Therefore, by using Er-doped fibers to monitor torsion on structures will give more sensitive and accurate results than using standard fibers. These results can be employed for sensing applications, especially for small to medium size structures, which can be mechanical, civil or aeronautics.

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Section: Long Period Fiber Gratings Fabrication Methodsmentioning

confidence: 99%

Optical Fiber Torsion Sensor with Mechanically Induced Long Period Fiber Gratings in Rare-Earth Doped Fibers

Pulido-Navarro¹,

Álvarez-Chávez²,

Ceballos-Herrera³

et al. 2014

OPJ

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“…Both types of the structure are widely used in the transmission as band rejectors [35][36][37][38][39][40][41][42][43]. Such band rejectors are further developed to serve as transverse load, temperature, pressure, twist, and refractive index sensors [44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59].…”

Section: Applications Of Mechanically Induced Lpfgsmentioning

confidence: 99%

“…This method shows great potential for sensing applications in vulnerable environments, serving as a low-cost device for various sensor applications, including intruder sensors and weight sensors. The mechanically induced LPFGs are widely used as twist sensors [54][55][56][57][58][59].…”

Section: Applications Of Mechanically Induced Lpfgsmentioning

confidence: 99%

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Mechanically Induced Long-Period Fiber Gratings and Applications

Ran,

Chen,

Wang

et al. 2024

Photonics

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Long-period fiber gratings (LPFGs) functioning as band-reject filters have played a pivotal role in the realm of optical communication. Since their initial documentation in 1996, LPFGs have witnessed rapid advancements in areas such as optical sensing, the equalization of optical amplification, and optical band-pass filtering, etc. The unique attributes of optical fiber-based grating, including their miniaturized size, cost-effectiveness, and immunity to electromagnetic interference, have contributed significantly to various sectors over the last two decades. This paper presents a review of the evolution of LPFGs, with a specific focus on the progression and current trends of mechanically induced long-period fiber gratings. It offers a concise overview of coupled-mode theory, the fabrication processes, the merits, and the limitations associated with mechanically induced LPFGs. Moreover, this review elucidates the application methodologies of mechanically induced LPFGs and anticipates future directions in this field.

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Torsion Sensing Characteristics of Mechanically Induced Long-Period Holey Fiber Gratings

et al. 2010

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Higher-order core mode resonances in a mechanically induced long-period holey fiber grating

Cited by 4 publications

References 19 publications

Optical Fiber Torsion Sensor with Mechanically Induced Long Period Fiber Gratings in Rare-Earth Doped Fibers

Optical Fiber Torsion Sensor with Mechanically Induced Long Period Fiber Gratings in Rare-Earth Doped Fibers

Mechanically Induced Long-Period Fiber Gratings and Applications

Torsion Sensing Characteristics of Mechanically Induced Long-Period Holey Fiber Gratings

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