Gas sensing properties of index-guided PCF with air-core

The in-line chemical sensing device with novel C-type fiber and photonic crystal fiber was successfully fabricated. We further improved the sensitivity or light coupling efficiency of our in-line chemical sensing device with optimized the Ctype fiber length. The results show that sensitivity and response time of device are significantly enhanced with optimization of cleaving and splicing process. The gas sensing experiments with the optimized conditions are demonstrated for detecting partial pressure of acetylene. We also numerically analyzed the sensitivity of ring-core defect photonic crystal fiber which was used in this experiment, through full-vectorial finite element method.

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“…Here E x, y and H x, y are the transverse electric and magnetic field of the propagating mode [5]. As Eq.…”

Section: Sensitivity Of the Proposed Photonic Crystal Fibermentioning

confidence: 99%

“…If we use the photonic crystal fiber as a sensing device, the interaction length between light and sensing measurands effectively increases. Therefore, photonic crystal fibers are suitable candidates for sensing applications and can significantly improve the sensitivity of a sensor [5].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity enhancement of in-line chemical sensing device with C-type fiber and photonic crystal fiber

Kassani

Park

et al. 2012

SPIE Proceedings

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“…However, those methods still have raised significant difficulties: requirement of elaborated alignment processes for each measurement, broken symmetry in the periodic structure of the PCF, too small holes for efficient measurand entry, as well as sophisticated fabrication processes. Improving the sensing sensitivity in PCF is still an on-going critical issue [14,15].…”

Section: Introductionmentioning

confidence: 99%

Fast response in-line gas sensor using C-type fiber and Ge-doped ring defect photonic crystal fiber

Kassani¹,

Park²,

Jung³

et al. 2013

Opt. Express

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An in-line chemical gas sensor was proposed and experimentally demonstrated using a new C-type fiber and a Ge-doped ring defect photonic crystal fiber (PCF). The C-type fiber segment served as a compact gas inlet/outlet directly spliced to PCF, which overcame previous limitations in packaging and dynamic responses. C-type fiber was prepared by optimizing drawing process for a silica tube with an open slot. Splicing conditions for SMF/C-type fiber and PCF/C-type fiber were experimentally established to provide an all-fiber sensor unit. To enhance the sensitivity and light coupling efficiency we used a special PCF with Ge-doped ring defect to further enhance the sensitivity and gas flow rate. Sensing capability of the proposed sensor was investigated experimentally by detecting acetylene absorption lines.

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“…Refractive index fiber optic sensors involving cladding modes of photonics crystal fiber (PCF) can attain very high sensitivity compared with those using conventional optical fiber [1,2]. Investigating modal characteristics of cladding modes of PCF is therefore of interest for such fiber optic devices.…”

Section: Introductionmentioning

confidence: 99%

Cladding Modes Analysis of Photonics Crystal Fiber for Refractive Index Sensors Using Finite Element Method

Naeem

Nguyen

Alameh

et al. 2010

Conference on Lasers and Electro-Optics 2010

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Gas sensing properties of index-guided PCF with air-core

Cited by 49 publications

References 14 publications

Sensitivity enhancement of in-line chemical sensing device with C-type fiber and photonic crystal fiber

Sensitivity enhancement of in-line chemical sensing device with C-type fiber and photonic crystal fiber

Fast response in-line gas sensor using C-type fiber and Ge-doped ring defect photonic crystal fiber

Cladding Modes Analysis of Photonics Crystal Fiber for Refractive Index Sensors Using Finite Element Method

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