High sensitivity optical fiber microring sensor based on Whispering-Gallery mode for water analysis

2021 ◽  
Author(s):  
Nedjmeddine Ammar Merabet ◽  
Lynda A. Cherbi-Bazi ◽  
Meriem Benlacheheb
Keyword(s):  
Optical Fiber ◽  
Water Analysis ◽  
High Sensitivity ◽  
Whispering Gallery Mode ◽  
Whispering Gallery

scholarly journals Whispering Gallery Mode Based Optical Fiber Sensor for Measuring Concentration of Salt Solution

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Chia-Chin Chiang ◽  
Jian-Cin Chao
Keyword(s):  
Optical Fiber ◽  
Mass Production ◽  
Low Cost ◽  
Optical Fiber Sensor ◽  
Whispering Gallery Mode ◽  
Solution Concentration ◽  
Fiber Sensor ◽  
Average Sensitivity ◽  
Whispering Gallery ◽  
The Right

An optical fiber solution-concentration sensor based on whispering gallery mode (WGM) is proposed in this paper. The WGM solution-concentration sensors were used to measure salt solutions, in which the concentrations ranged from 1% to 25% and the wavelength drifted from the left to the right. The experimental results showed an average sensitivity of approximately 0.372 nm/% and anR2linearity of 0.8835. The proposed WGM sensors are of low cost, feasible for mass production, and durable for solution-concentration sensing.

Fabrication, Characterization and Microsensing of Whispering-Gallery Mode Micro-Coupling Systems

2008 ◽  
Author(s):  
Qiulin Ma ◽  
Tobias Rossmann ◽  
Zhixiong Guo
Keyword(s):  
Transmission Loss ◽  
Coupling Efficiency ◽  
High Sensitivity ◽  
Single Mode ◽  
Whispering Gallery Mode ◽  
Single Mode Fiber ◽  
Whispering Gallery ◽  
Coupling System ◽  
Wide Range ◽  
Micro Sensor

An optical micro-coupling system of whispering-gallery mode usually consists of a resonator (e.g. a sphere) and a coupler (e.g. a taper). In this report, silica microspheres of 50–500 μm in diameter are fabricated by hydrogen flame fusing of an end of a single mode fiber or fiber taper. Fiber tapers are fabricated by the method of heating and pulling that meets an adiabatic condition. Taper’s waist diameter can routinely be made less than 1 μm and almost zero transmission loss in a taper is achieved which allows an effective and phase-matched coupling for a wide range sizes of microspheres. Both resonators and couplers’ surface microstructure and shapes are examined by scanning electronic microscopy. Three regimes of coupling are achieved, enabling a good flexibility to control Q value and coupling efficiency of a micro-coupling system. Whispering gallery mode shift is used to demonstrate a novel temperature micro-sensor. Its sensitivity determined from actual experimental results agrees well with the theoretical value. A concept of using the photon’s cavity ring down (CRD) in the microsphere to make a novel high-sensitivity trace gas micro-sensor is proposed. The CRD time constant when ammonia is chosen as the analyte gas is predicted using the simulated absorption lines.

scholarly journals Polymer Based Whispering Gallery Mode Humidity Sensor

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2383 ◽  
Author(s):  
Ann Petermann ◽  
Thomas Hildebrandt ◽  
Uwe Morgner ◽  
Bernhard Roth ◽  
Merve Meinhardt-Wollweber
Keyword(s):  
Relative Humidity ◽  
Humidity Sensor ◽  
Real Life ◽  
High Sensitivity ◽  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Humidity Measurements ◽  
Wgm Resonators

Whispering gallery mode (WGM) resonators are versatile high sensitivity sensors, but applications regularly suffer from elaborate and expensive manufacturing and read-out. We have realized a simple and inexpensive concept for an all-polymer WGM sensor. Here, we evaluate its performance for relative humidity measurements demonstrating a sensitivity of 47 pm/% RH. Our results show the sensor concepts’ promising potential for use in real-life applications and environments.

scholarly journals Microwave-assisted in situ laser dye incorporation into high sensitivity whispering gallery mode microresonators

2021 ◽  
Author(s):  
Jesús S. Mondragón-Ochoa ◽  
José González-Rivera ◽  
Cigdem Toparli ◽  
Rizwana Khanum ◽  
Rakesh Singh Moirangthem ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Whispering Gallery Mode ◽  
Laser Dye ◽  
Whispering Gallery ◽  
Microwave Assisted

scholarly journals Highly sensitive nano-aerosol detection based on the whispering-gallery-mode in cylindrical optical fiber resonators

2016 ◽  
Vol 50 (12) ◽  
pp. 1366-1374 ◽  
Author(s):  
Dong Wang ◽  
Zihan Wang ◽  
Aram Lee ◽  
Linsey C. Marr ◽  
James R. Heflin ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Highly Sensitive

scholarly journals In-Fiber BaTiO3 Microsphere Resonator for High-Sensitivity Temperature Measurement

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 318
Author(s):  
Chi Li ◽  
Meng Zhu ◽  
Peng Ji ◽  
Cong Xiong ◽  
Changrui Liao
Keyword(s):  
Fiber Optic ◽  
Temperature Response ◽  
High Sensitivity ◽  
Single Mode ◽  
Whispering Gallery Mode ◽  
Transmission Spectra ◽  
Hollow Core ◽  
Polymer Waveguide ◽  
Whispering Gallery ◽  
Core Fiber

A fiber optic whispering gallery mode (WGM) resonator was proposed and realized by integrating an inline polymer waveguide with a microsphere mounted on it. The polymer waveguide with a diameter of 1 μm was printed with femtosecond laser-assisted multiphoton polymerization in a section of a grooved hollow-core fiber, which was sandwiched between two single-mode fibers. Two WGW resonators assembled with microspheres of different sizes were prepared. The transmission spectra of those stimulated WGMs were investigated both in simulation and experimentally. The temperature response of the resonators was particularly studied, and a linear sensitivity of −593 pm/°C was achieved from 20 °C to 100 °C.

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