Modified All-Fiber Fabry–Perot Interferometer and Its Refractive Index, Load, and Temperature Analyses

Abstract We experimentally and theoretically investigate Fano-like resonance in large-area Au/SiO2/Au nano-patches meta-structure, which is originating from the coupling between Fabry Perot resonance and magnetic dipole resonance modes. A highly sensitive refractive index sensor based on the lineshape analysis is obtained. The extracted wavelength shift with the amount of substance of Hg2+ changing from 10-3 pmol to 1 nmol has a linear dependence, and the sensitivity can reach to ultra-low limit of detection (LOD) as 10-3 pmol. This study may provide an approach for the development and modification in sensing.

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Significant photoinduced refractive index change observed in porous silicon Fabry–Pérot resonators

Applied Physics Letters ◽

10.1063/1.126279 ◽

2000 ◽

Vol 76 (15) ◽

pp. 1990-1992 ◽

Cited By ~ 23

Author(s):

Morio Takahashi ◽

Yuichi Toriumi ◽

Takahiro Matsumoto ◽

Yasuaki Masumoto ◽

Nobuyoshi Koshida

Keyword(s):

Refractive Index ◽

Porous Silicon ◽

Refractive Index Change ◽

Index Change ◽

Fabry Perot

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Wavelength-Interrogation Fabry–Perot Refractive Index Sensor Based on a Sealed In-Fiber Cavity

IEEE Photonics Technology Letters ◽

10.1109/lpt.2015.2478797 ◽

2016 ◽

Vol 28 (1) ◽

pp. 3-6 ◽

Cited By ~ 9

Author(s):

Tingting Wang ◽

Yixian Ge ◽

Jianhua Chang ◽

Ming Wang

Keyword(s):

Refractive Index ◽

Refractive Index Sensor ◽

Fabry Perot

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Optical fiber Fabry-Perot interferometer refractive index sensor based on Vernier effect for silica colloidal sol aging monitoring

Optical Fiber Technology ◽

10.1016/j.yofte.2020.102338 ◽

2020 ◽

Vol 60 ◽

pp. 102338 ◽

Cited By ~ 1

Author(s):

Lin Huang ◽

Guorui Zhou ◽

Lianghong Yan ◽

Hongwei Yan ◽

Xiaodong Jiang

Keyword(s):

Refractive Index ◽

Optical Fiber ◽

Refractive Index Sensor ◽

Fabry Perot ◽

Vernier Effect

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Thermo-Optic Tunable Optical Filter Based on Fabry-Perot Microcavities in SOI

Advanced Engineering Forum ◽

10.4028/www.scientific.net/aef.6-7.194 ◽

2012 ◽

Vol 6-7 ◽

pp. 194-199

Author(s):

Zhe Li ◽

Hua Juan Qi ◽

Yong Chuan Xiao ◽

Feng Li Gao

Keyword(s):

Refractive Index ◽

Wavelength Division Multiplexing ◽

Optical Filter ◽

Silicon On Insulator ◽

Central Wavelength ◽

Wavelength Division ◽

Tunable Optical Filter ◽

Compact Size ◽

Fabry Perot ◽

Output Characteristics

An integrated TOF (Tunable Optical Filter) based on thermo-optic effect in Silicon on insulator (SOI) rib waveguide is designed and simulated. The device is comprised of two high refractivity contrast Si/Air stacks, functioning as high reflectivity of DBRs and separated by a variable refractive index Si F-P cavity. The output characteristics are calculated and simulated based on Transfer Matrix Method (TMM). Wavelength tuning is achieved through thermal modulation of refractive variation of the cavity.As the cavity Si is heated,the refractive index of the cavity increases.When the temperature of cavity Si changes within100°C，the central wavelength gets a continuous 8nm shift from 1550nm to 1558nm, which is right located in the WDM (Wavelength division multiplexing) networks operating at C-band. Moreover, by calculating, the tuning sensitivity is about 0.08nm/°C. Owing to the compact size and excellent characteristics of integration, the proposed component has a promising utilization in spectroscopy and optical communication.

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A Sensing Peak Identification Method for Fiber Extrinsic Fabry–Perot Interferometric Refractive Index Sensing

Sensors ◽

10.3390/s19010096 ◽

2018 ◽

Vol 19 (1) ◽

pp. 96 ◽

Cited By ~ 3

Author(s):

Bowen Yang ◽

Biyao Yang ◽

Ji Zhang ◽

Yiheng Yin ◽

Yanxiong Niu ◽

...

Keyword(s):

Refractive Index ◽

Measurement Accuracy ◽

Measurement Range ◽

Superior Performance ◽

Refractive Index Sensing ◽

Identification Method ◽

Peak Identification ◽

Fabry Perot ◽

High Measurement ◽

Lateral Offset

A novel sensing peak identification method for high accuracy refractive index (RI) sensing is proposed. The implementation takes the intensity of interference maximum as the characteristic to distinguish interference peaks, tracking the sensing peak continually during a RI changes, with high measurement accuracy and simple computation. To verify the effect of the method, the extrinsic Fabry–Perot interferometer (EFPI) sensor has been fabricated using the large lateral offset splicing technique. In the RI range from 1.346 to 1.388, the measurement range of the EFPI with the proposed method reaches at least 6 times larger than that of EFPI with the wavelength tracking method and the largest measurement error is −4.47 × 10−4. The EFPI refractive index (RI) sensor identified the sensing peak is believed to play an important role in RI, concentration and density sensing, etc., for superior performance.

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Preparation and Characterization of Microsphere ZnO ALD Coating Dedicated for the Fiber-Optic Refractive Index Sensor

Nanomaterials ◽

10.3390/nano9020306 ◽

2019 ◽

Vol 9 (2) ◽

pp. 306 ◽

Cited By ~ 7

Author(s):

Paulina Listewnik ◽

Marzena Hirsch ◽

Przemysław Struk ◽

Matthieu Weber ◽

Mikhael Bechelany ◽

...

Keyword(s):

Refractive Index ◽

Optical Fiber ◽

Fiber Optic ◽

Single Mode ◽

Atomic Layer ◽

Fiber Optic Sensor ◽

Refractive Index Sensor ◽

Layer Deposition ◽

Fabry Perot

We report the fabrication of a novel fiber-optic sensor device, based on the use of a microsphere conformally coated with a thin layer of zinc oxide (ZnO) by atomic layer deposition (ALD), and its use as a refractive index sensor. The microsphere was prepared on the tip of a single-mode optical fiber, on which a conformal ZnO thin film of 200 nm was deposited using an ALD process based on diethyl zinc (DEZ) and water at 100 °C. The modified fiber-optic microsphere was examined using scanning electron microscopy and Raman spectroscopy. Theoretical modeling has been carried out to assess the structure performance, and the performed experimental measurements carried out confirmed the enhanced sensing abilities when the microsphere was coated with a ZnO layer. The fabricated refractive index sensor was operating in a reflective mode of a Fabry–Pérot configuration, using a low coherent measurement system. The application of the ALD ZnO coating enabled for a better measurement of the refractive index of samples in the range of the refractive index allowed by the optical fiber. The proof-of-concept results presented in this work open prospects for the sensing community and will promote the use of fiber-optic sensing technologies.

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