Ultra Sensitive Fiber-Optic Hydrogen Sensor Based on High Order Cladding Mode

Kim, Young Ho; Kim, Myoung Jin; Rho, Byung Sup; Park, Minsu; Jang, Jae‐Hyung; Lee, Byeong Ha

doi:10.1109/jsen.2010.2092423

Cited by 41 publications

(16 citation statements)

References 12 publications

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“…In this simulation, the surrounding liquid has RI of 1.32 and the wavelength is 1500 nm, the SCSMF has core and cladding diameters of 2.2 and 125 µm respectively and the refractive indices of the core and cladding are 1.451 and 1.445 respectively. Figure 2(b) shows that the general cladding mode has a ring like structure across the whole cross section of the cladding region, which agrees with the previous report in [28]. With those parameters, if the wavelength is longer than 1500 nm, the V value will be less than 0.61, which means that there is no guided core mode in the SCSMF [24][25].…”

Section: Theoretical Analysissupporting

confidence: 88%

A comprehensive analysis verified by experiment of a refractometer based on an SMF28–small-core singlemode fiber (SCSMF)–SMF28 fiber structure

Semenova

Wang

et al. 2011

J. Opt.

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A comprehensive theoretical model for an SMF28-Small-Core SMF (SCSMF) -SMF28 structure based refractometer is developed based on modal propagation analysis (MPA) method. Simulation result shows that the wavelength shift of this refractometer obeys changes exponentially as the surrounding refractive index (SRI) varies. The core diameter of SCSMF does not have a significant influence on the sensitivity of the refractometer but cladding diameter does have. The simulation results are verified experimentally and it is also experimentally demonstrated that a maximum sensitivity of 1808 nm/RIU (refractive index unit) for an SRI range from 1.324 to 1.431 and that as expected the wavelength shift response is an exponential function of SRI.

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Section: Theoretical Analysissupporting

confidence: 88%

A comprehensive analysis verified by experiment of a refractometer based on an SMF28–small-core singlemode fiber (SCSMF)–SMF28 fiber structure

Semenova

Wang

et al. 2011

J. Opt.

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“…Some complex metal oxides have been shown to exhibit refractive index responses and can be combined with fiber Bragg gratings [16,17]. When metallic coatings such as palladium or palladium and metal oxide composites are introduced with Bragg gratings, these act as strain transducers also exerting modifications on the grating peak [18,30]. When long period gratings are introduced, these can act to increase the light interaction with functional coatings not in close proximity with the fiber core [16,23].…”

Section: Background and Simulationsmentioning

confidence: 99%

Engineering metal oxide nanostructures for the fiber optic sensor platform

Poole¹,

Ohodnicki²,

Chen³

et al. 2014

Opt. Express

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This paper presents an effective integration scheme of nanostructured SnO 2 with the fiber optic platform for chemical sensing applications based on evanescent optical interactions. By using a triblock copolymer as a structure directing agent as the means of nano-structuring, the refractive index of SnO 2 is reduced from >2.0 to 1.46, in accordance with effective medium theory for optimal on-fiber integration. Hightemperature stable fiber Bragg gratings inscribed in D-shaped fibers were used to perform real-time characterization of optical absorption and refractive index modulation of metal oxides in response to NH 3 from the room temperature to 500°C. Measurement results reveals that the redox reaction of the nanostructured metal oxides exposed to a reactive gas NH 3 induces much stronger changes in optical absorption as opposed to changes in the refractive index. Results presented in this paper provide important guidance for fiber optic chemical sensing designs based on metal oxide nanomaterials. ©2014 Optical Society of America References and links1. S. Akbar, P. Dutta, and C. Lee, "High-temperature ceramic gas sensors: a review," Int. J. Appl. Ceram. Tec.3(4), 302-311 (2006). 2. G. Korotcenkov, "Gas response control through structural and chemical modification of metal oxide films: state of the art and approaches," Sens. Actuators B Chem. 107, 209-232 (2005). 3. G. Korotcenkov, "Metal oxides for solid-state gas sensors: What determines our choice?" Mat. Sci. Eng. B Solid.139(1), 1-23 (2007). 4. N. Yamazoe, "Toward innovations of gas sensor technology," Sens. Actuators B Chem. 108, 2-14 (2005). 5. N. Yamazoe, "New approaches for improving semiconductor gas sensors," Sens. Actuators B Chem. 5, 7-19 (1991). 6. A. Ponzoni, E. Comini, I. Concina, M. Ferroni, M. Falasconi, E. Gobbi, V. Sberveglieri, and G. Sberveglieri, "Nanostructured metal oxide gas sensors, a survey of applications carried out at SENSOR Lab, Brescia (Italy) in the security and food quality fields," Sensors 12(12), 17023-17045 (2012). 2813-2826 (1999). 37. S. Shao, M. Dimitrov, N. Guan, and R. Köhn, "Crystalline nanoporous metal oxide thin films by post-synthetic hydrothermal transformation: SnO2 and TiO2," Nanoscale 2(10), 2054-2057 (2010

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“…So they neither generate sparks nor rely on heat exchange and have no risk of gas ignition. With the development of optoelectronic technology and micromachining technology, more and more new work such as sensors based on fiber grating [6], [7], evanescent field [8], [9], metallic photonic crystal structures [10] and surface plasmon Manuscript resonance [11]- [13] are springing up. However, some of them have an all-fiber sensing system but a low sensitivity, while some others own a high sensitivity but introducing bulk-optic components which may introduce instability to optical system.…”

Section: Introductionmentioning

confidence: 99%

An All-Fiber Reflective Hydrogen Sensor Based on a Photonic Crystal Fiber In-Line Interferometer

et al. 2014

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A new method based on introducing a photonic crystal fiber (PCF) in-line interferometer for hydrogen sensing is demonstrated. One end-face of the PCF and part of the outer-face of the fiber are plated with a thin palladium film by magnetron sputtering, while the other end is connected to the optical path. Therefore, a set of reflection-type all-fiber hydrogen sensor system is accomplished. Hydrogen concentration from 0% to 5% was detected in the experiment and the related interferometric resonant wavelength-shift was recorded. The maximum wavelength shift is over 1.2 nm. The whole system has an all-fiber optical path without any bulk-optic components, and this design obtains a high level of integration, a high stability, and low production costs.Index Terms-Photonic crystal fiber in-line interferometer, reflective, wavelength-shift, hydrogen sensor.

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Ultra Sensitive Fiber-Optic Hydrogen Sensor Based on High Order Cladding Mode

Cited by 41 publications

References 12 publications

A comprehensive analysis verified by experiment of a refractometer based on an SMF28–small-core singlemode fiber (SCSMF)–SMF28 fiber structure

A comprehensive analysis verified by experiment of a refractometer based on an SMF28–small-core singlemode fiber (SCSMF)–SMF28 fiber structure

Engineering metal oxide nanostructures for the fiber optic sensor platform

An All-Fiber Reflective Hydrogen Sensor Based on a Photonic Crystal Fiber In-Line Interferometer

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