Nano-displacement sensor based on photonic crystal fiber modal interferometer

Dash, Jitendra Narayan; Jha, Rajan; Villatoro, Joel; Dass, Sumit

doi:10.1364/ol.40.000467

Cited by 75 publications

(22 citation statements)

References 23 publications

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“…There is a growing demand for displacement measurement with nanometer-and subnanometer-scale resolution in nanoscience, material science, and biotechnology. Some typical micro-or nanometer-scale displacement sensors have been reported by many research groups [1][2][3][4][5][6]. Among these displacement sensors, capacitive sensors [7], piezoresistive sensors [8], eddy-current sensors [9], laser interferometers, and optical encoders [10,11] are considered to be most promising to address the issue.…”

Section: Introductionmentioning

confidence: 99%

Subnanometer resolution displacement sensor based on a grating interferometric cavity with intensity compensation and phase modulation

Wang

Bai

et al. 2015

Appl. Opt.

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A subnanometer resolution displacement sensor based on a grating interferometric cavity with intensity compensation and phase modulation is proposed and experimentally demonstrated in this paper. The grating interferometric cavity is composed of a frequency-stabilized laser source, a diffraction grating, and a mirror. To realize a subnanometer resolution, the intensity compensation and phase modulation technique are introduced, which are achieved by an intensity compensation light path, three closed placed photodetectors, a processing circuit and a piezoelectric ceramic transducer, and a lock-in amplifier. The intensity compensation technique can improve the stability of the output intensity signal greatly while the phase modulation technique can increase the signal-tonoise ratio dramatically. The detected signal is intensity modulated and processed by a particular arithmetic circuit. Experimental results indicate that the sensitivity of this displacement sensor is 44.75 mV/nm and the highest resolution can reach 0.017 nm, which is 27 times better than the one without intensity compensation and phase modulation. As a high-performance sensor with immunity to electromagnetic interference, this displacement sensor has potential to be used in nanoscience and technology.

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Section: Introductionmentioning

confidence: 99%

Subnanometer resolution displacement sensor based on a grating interferometric cavity with intensity compensation and phase modulation

Wang

Bai

et al. 2015

Appl. Opt.

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“…The sensitivity curve (Figure 2d) with respect to cavity length shows an exponential nature which agrees with the previously reported interferometers. [ 41 ] Further decrease in the cavity length below 20 µm, results in a spectrum with broad FSR and low interference visibility factor which can be compensated by using a light source of wider bandwidth. Thus, by altering the cavity length of the interferometer the sensitivity and operational range of the magnetometer in static field can be reconfigured extensively.…”

Section: Figurementioning

confidence: 99%

Reconfigurable Optical Magnetometer for Static and Dynamic Fields

Chatterjee

Pal

Jha

2020

Advanced Optical Materials

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Optical magnetometers with high resolution, integrability, and reconfigurability have been central to the development of advance photonic devices for remote and efficient magnetic field sensing. These magnetometers have mostly been based on ferromagnetic materials that detect only static magnetic fields. Here, the limitation is overcome by utilizing an interferometric technique to demonstrate a reconfigurable fiber‐based magnetometer that is highly sensitive to both static and dynamic magnetic fields. The proposed sensor shows an unprecedented sensitivity of 37.07 nm/mT for static magnetic field that could enable detection of few nanotesla fields with a high‐resolution optical spectrometer. Furthermore, the proposed magnetometer has wide dynamic range extending over a frequency band of 0–1700 Hz with significant signal to noise ratio (16.04 dBm at 615 Hz) that enables precise frequency determination of the signal. The large reconfigurability, dynamic operation frequency, and portability of the demonstrated magnetometer ascertain practical applications in broad range of technologies including cardiovascular health monitoring, underground mineral exploration, and marine surveillance.

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“…Many kinds of sensors based on PCFs have been thoroughly investigated in monitoring various physical parameters including bend [1], strain [2], humidity [3], displacement [4], magnetic field [5], pressure [6], [7], refractive index (RI) [8] and temperature [9], etc. Nowadays, PCFs with selectively filled liquids have been a prominent research focus in the field of fiber optic sensing since the selectively infiltrated PCFs exhibited excellent properties of high spectral sensitivity [10]- [12], optical tunability [13] and flexible operation capability [14], [15].…”

Section: Introductionmentioning

confidence: 99%

Multi-Components Interferometer Based on Partially Filled Dual-Core Photonic Crystal Fiber for Temperature and Strain Sensing

et al. 2016

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A multi-components interferometer based on partially filling dual-core photonic crystal fiber (D-C PCF) was fabricated for measuring temperature and strain. The partially filled D-C PCF was prepared by manual glue method, and the cladding air holes surrounding one core were selective filled with refractive index liquid while remaining other air holes unfilled. A multi-components interference with a large spectrum envelope and fine interference fringes was observed in the transmission spectrum. Theoretical and experimental investigations revealed that the large spectrum envelope was originated by the interference of the fundamental modes of two cores of the PCF while the fine interference fringes were generated by the interference between the fundamental mode and higher order modes in one core that surrounded by unfilled air holes. The proposed device can be used to monitor temperature and strain simultaneously through matrix demodulation, with a high temperature sensitivity of 5.43 nm/ • C.

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Nano-displacement sensor based on photonic crystal fiber modal interferometer

Cited by 75 publications

References 23 publications

Subnanometer resolution displacement sensor based on a grating interferometric cavity with intensity compensation and phase modulation

Subnanometer resolution displacement sensor based on a grating interferometric cavity with intensity compensation and phase modulation

Reconfigurable Optical Magnetometer for Static and Dynamic Fields

Multi-Components Interferometer Based on Partially Filled Dual-Core Photonic Crystal Fiber for Temperature and Strain Sensing

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