Optical refractometer based on large-core air-clad photonic crystal fibers

Silva, Susana; Santos, J. L.; Malcata, F. Xavier; Kobelke, Jens; Schuster, Kay; Frazão, Orlando

doi:10.1364/ol.36.000852

Cited by 35 publications

(17 citation statements)

References 11 publications

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“…In this line of research, at INESC Porto, in 2011 Silva et al reported the first MMI fiber-based refractometer which consisted in a SMS fiber structure relying on a large-core, air-clad photonic crystal fiber (PCF) [34]. This configuration is shown in Figure 5.…”

Section: Multimodal Interferencementioning

confidence: 99%

Fiber Optic-Based Refractive Index Sensing at INESC Porto

Jorge

Silva

Gouveia

et al. 2012

Sensors

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A review of refractive index measurement based on different types of optical fiber sensor configurations and techniques is presented. It addresses the main developments in the area, with particular focus on results obtained at INESC Porto, Portugal. The optical fiber sensing structures studied include those based on Bragg and long period gratings, on micro-interferometers, on plasmonic effects in fibers and on multimode interference in a large spectrum of standard and microstructured optical fibers.

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Section: Multimodal Interferencementioning

confidence: 99%

Fiber Optic-Based Refractive Index Sensing at INESC Porto

Jorge

Silva

Gouveia

et al. 2012

Sensors

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“…However, the addition of the reference arm increased the complexity and unstability of sensing system. Silva et al demonstrated a sensor based on in series SMF-PCF(photonic crystal fiber)-SMF structure for the refractive index sensing with the ability of temperature compensation [22]. In their work, two pieces of large-core air-clad PCF with a larger diameter than SMF were employed, which would complicate the fabrication and increase the cost of the sensor.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Multimode Interference Structure-Based Refractive Index and Temperature Fiber Sensor

et al. 2016

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A novel all-fiber sensor based on cascaded singlemode-no-core-singlemode (SNS) and siglemode-multimodesinglemode (SMS) fiber structure is proposed and investigated. Simulation results show that for the given fibers, by appropriately choosing the lengths of no-core fiber (NCF) and multimode fiber (MMF), the transmission spectrum will exhibit two distinguishable dips corresponding to SNS and SMS, respectively. The simultaneous measurement of liquids' refractive index and temperature can be realized by monitoring the two dips' central wavelength shifts. According to simulations, a corresponding sensor is fabricated and tested. The experimental results demonstrate the feasibility of the sensor and show that the sensor has the RI and temperature sensitivities of 113.66 nm/RIU and 9.2 pm/ o C, respectively.Index Terms-Optical fiber sensors, refractive index, temperature, multimode interference.

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“…In other work, a solid core PCF coated by SiNx nano film in same configuration of SMF-PCF-SMF that gave a maximum sensitivity 874 nm/RIU [10]. Also, a RI based sensor contains two large core and air clad of PCF is demonstrated that gave maximum sensitivity is 800 nm/RIU at resolution of about 3.4×10 -3 [11]. While, a hollow core based PCF was butt-coupled to SMF to achieve high sensitivity of about 5000 nm/RIU that showed interaction of measure with light [12].…”

Section: Related Workmentioning

confidence: 87%

Concentration Sensor Design Using Wavelength Shift Based Photonic Crystal Fibre

Alawsi

2017

ijs

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The proposed sensor is designed to measure the concentration of liquids using the photonic crystal fibre (PCF) principles. The sensor has been implemented by splicing the two ends of the PCF piece to a single mode fibre (SMF). The air holes found in the splicing points are fully collapsed by the arc discharge. The wavelength shift occurs at the collapsed regions due to the excitation of combined core besides the cladding modes. The PCF was infiltrated by diluted olive oil to be tested in terms of the variation of sensing response with the wavelength shift in the transmission spectra. The sensitivity is 875 nanometre per refractive index unit (nm/RIU) that estimated in refractive index range between 1.43 and 1.47. Result also shows that the sensor has a small temperature sensitivity of 0.863dBm/°C in the range of 20°C to 70°C. The proposed concentration sensor potentially can be applied in biomedical, biological and chemical applications. ‫الكيميائية.‬ ‫المقاييس‬ ‫و‬ ‫االحيائية،‬ ‫المقاييس‬ ‫االحيائي،‬ ‫الطب‬ ‫مجاالت‬ ‫في‬ ‫موثوقية‬ IntroductionThe fibre optic sensors (FOS) has been rapidly growing and developing in the last few years due to the many desirable advantages of such sensors in comparison with conventional electrical sensor. The most interesting advantages of FOS are: compactness, lightweight structure and robust, absolute

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Optical refractometer based on large-core air-clad photonic crystal fibers

Cited by 35 publications

References 11 publications

Fiber Optic-Based Refractive Index Sensing at INESC Porto

Fiber Optic-Based Refractive Index Sensing at INESC Porto

A Hybrid Multimode Interference Structure-Based Refractive Index and Temperature Fiber Sensor

Concentration Sensor Design Using Wavelength Shift Based Photonic Crystal Fibre

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