Highly Sensitive Sensors Based on Photonic Crystal Fiber Modal Interferometers

Villatoro, Joel; Finazzi, Vittoria; Badenes, G.; Pruneri, Valerio

doi:10.1155/2009/747803

Cited by 76 publications

(50 citation statements)

References 60 publications

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“…A few authors have reported interferometric [10] and polarimetric sensors [11] embedded in composite materials. What has not been well examined in the previous research studies is the impact of the characteristic properties of the composite materials and also the effect of the fiber buffer coating on the characteristics of the embedded fiber sensors.…”

Section: Introductionmentioning

confidence: 99%

The influence of thermal expansion of a composite material on embedded polarimetric sensors

Ramakrishnan

Rajan

Semenova

et al. 2011

Smart Mater. Struct.

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Abstract. Some of the most critical issues of the influence of the thermal expansion of composite materials on embedded polarimetric sensors for measurements of strain and temperature are studied in this paper. A composite material sample with polarimetric fiber sensors embedded in two distinct layers of a multi-layer composite structure is fabricated and characterized. The polarimetric fiber sensors used in this study are based on panda type fiber and polarization maintaining photonic crystal fiber (PM-PCF). The temperature sensitivities of polarimetric fiber sensors with acrylate buffer coated and buffer stripped polarization maintaining optical fibers are measured in free space and compared to those for embedded in the composite material. It is found that a polarimetric fiber sensor with an acrylate coating embedded in the composite material shows the same response as the one in free space while the coating-stripped fiber polarimetric sensor shows significant temperature sensitivity when embedded in the composite material. This is due to the stress-induced change in birefringence created by the thermal expansion of the composite material, while in the case of a buffer coated fiber, the effect is considerably reduced as the thermal stress is largely eliminated by the buffer coating. The results obtained in this study demonstrated that thermal expansion of the composite material are the main source of error in strain and temperature measurement using embedded polarimetric fiber sensors and that more accurate strain and temperature measurements can be obtained with buffer coated polarimetric fiber sensors.

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Section: Introductionmentioning

confidence: 99%

The influence of thermal expansion of a composite material on embedded polarimetric sensors

Ramakrishnan

Rajan

Semenova

et al. 2011

Smart Mater. Struct.

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“…More cladding modes will also be excited and when the interference spectra were Fourier transformed, multiple spatial frequencies were seen with the number increasing with increasing interferometer length [22]. Different lengths of PCF were studied and compared for sensitivity [23][24][25]. It was found that the sensitivity was not strongly dependent on length, though longer sections could require better handling and packaging.…”

Section: Mach-zehnder Interferometer (Mzi)mentioning

confidence: 99%

“…Compared with a standard single mode fiber MZI, Ju et al [47] were able to obtain a higher strain sensitivity (À2.6 pm/με compared to +0.445 pm/με) and a lower temperature sensitivity (42.4 pm/ C per m compared to 1215.56 pm/ C per m). MZIs made with LPGs can be at risk of having a high insertion loss [24] due the deformation of fiber structure from inscription or from the misaligned splice point [45]. By cascading an LPG with a PCF MZI, simultaneous temperature and RI sensing was achieved as both elements in the sensor matrix responded differently to the multiple parameters [48].…”

Section: Mach-zehnder Interferometer (Mzi)mentioning

confidence: 99%

Photonic Crystal Fiber–Based Interferometric Sensors

Hu¹,

Wong²,

Shum³

2018

Selected Topics on Optical Fiber Technologies and Applications

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Photonic crystal fibers (PCFs), also known as microstructured optical fibers, are a highlighted invention of optical fiber technology which have unveiled a new domain of manipulating light in engineered fiber waveguides with unparalleled flexibility and controllability. Since the report of the first fabricated PCF in 1996, research in PCFs has resulted in numerous explorations, development and commercialization of PCF-based technologies and applications. PCFs contain axially aligned air channels which provide a large degree of freedom in design to achieve a variety of peculiar properties; numerous PCF-based sensors have been proposed, developed and demonstrated for a broad range of sensing applications. In this chapter, we will review the field of research on design, development and experimental achievement of PCF-based interferometric sensors for physical and biomedical sensing applications.

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“…The period or fringe spacing of these interferometers is (1) being the effective refractive index difference between the modes participating in the interference [13].…”

Section: Mzi Surrounded By Lcmentioning

confidence: 99%

Photonic liquid crystal fiber intermodal interferometer

Pouderoux¹

2013

Opt. Pura Apl.

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ABSTRACT:In this work, we present a novel interferometer based on liquid crystal and photonic crystal fiber technology. The objective of this project is the development of a tunable (switchable) modal (MachZehnder) interferometer for optical communications or sensing. This interferometer has been manufactured splicing a short portion (between 15 and 30 mm) of photonic crystal fiber with two single mode fiber pigtails. The study shows a high sensitivity of the interferometer to the polarization of the launching light..

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Highly Sensitive Sensors Based on Photonic Crystal Fiber Modal Interferometers

Cited by 76 publications

References 60 publications

The influence of thermal expansion of a composite material on embedded polarimetric sensors

The influence of thermal expansion of a composite material on embedded polarimetric sensors

Photonic Crystal Fiber–Based Interferometric Sensors

Photonic liquid crystal fiber intermodal interferometer

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