Noise reduction in resonator-based ultrasound sensors by using a CW laser and phase detection

Riobó, Lucas Matías; Hazan, Yoav; Veiras, Francisco E.; Garea, María Teresa; Sorichetti, P.A.; Rosenthal, Amir

doi:10.1364/ol.44.002677

Cited by 26 publications

(14 citation statements)

References 20 publications

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“…The MZI is locked to quadrature, hence the differential output signal is linear to the acoustic modulation. This scheme 4 involves two mechanisms for sensitivity enhancement. First, the optical path difference between the two arms of the MZI is set to approximately zero to enable cancellation of phase noise from the laser.…”

Section: Methods and Resultsmentioning

confidence: 99%

Silicon photonics ultrahigh-resolution in vivo optoacoustic tomography

Hazan,

Levi,

Nagli

et al. 2023

Opto-Acoustic Methods and Applications in Biophotonics VI

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A new ultrasound-detection technology is developed for ultrahigh-resolution optoacoustic tomography and is experimentally demonstrated with bandwidths exceeding 200 MHz and lateral resolutions beyond 20 µm. Our technology is based on an optical resonator fabricated in a silicon-photonics platform, which is coated by a sensitivity-enhancing polymer, which also eliminates the parasitic effect of surface acoustic waves. Further improvement in sensitivity is achieved by a low-noise interferometric setup, which eliminates the effect of laser frequency noise on the measurement. In optoacoustic tomography is performed on a mouse ear, revealing its vasculature at detail that has been previously reserved to optoacoustic microscopy.

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Section: Methods and Resultsmentioning

confidence: 99%

Silicon photonics ultrahigh-resolution in vivo optoacoustic tomography

Hazan,

Levi,

Nagli

et al. 2023

Opto-Acoustic Methods and Applications in Biophotonics VI

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“…For optical detection of ultrasound, sensors based on sensing acoustic perturbation of optical resonator mode are the most widely adopted solution for optical ultrasound detection (47,48), including the Fabry-Pérot interferometer for forward detection (28)(29)(30), a microring resonator for out-of-plane detection (31)(32)(33), and π-FBG for lateral detection (see table S4) (34)(35)(36). Since the π-FBG sensor is suitable for detecting laterally incident ultrasound, while fully compatible with the fiber-optic transcerving configuration of intravascular imaging, it is ideal for implementing AO-IVUS catheters.…”

Section: Discussionmentioning

confidence: 99%

“…This is achieved through substantial improvement of frequency response bandwidth in both the excitation and detection of ultrasound using optical techniques. The past decade has seen great advances in both optical excitation of ultrasound (20)(21)(22)(23)(24)(25)(26)(27) and optical detection of ultrasound (28)(29)(30)(31)(32)(33)(34)(35)(36), demonstrating a wide variety of technical solutions. Nevertheless, previous efforts on AO-IVUS have not fully exploited the potential of optical ultrasound excitation and detection, yielding limited ultrasound frequency response bandwidth and resolution.…”

Section: Introductionmentioning

confidence: 99%

Ultrawide-bandwidth high-resolution all-optical intravascular ultrasound using miniaturized photoacoustic transducer

et al. 2023

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Conventional intravascular ultrasound (IVUS) uses piezoelectric transducers to electrically generate and receive ultrasound. However, it remains a challenge to achieve large bandwidth for high resolution without compromising imaging depth. We report an all-optical IVUS (AO-IVUS) imaging system using picosecond laser pulse–pumped carbon composite for ultrasound excitation and π-phase–shifted fiber Bragg gratings for ultrasound detection. Using this all-optical technique, we achieved ultrawide-bandwidth (147%) and high-resolution (18.6 micrometers) IVUS imaging, which is unattainable by conventional technique. Imaging performance has been characterized in phantoms, presenting 18.6-micrometer axial resolution, 124-micrometer lateral resolution, and 7-millimeter imaging depth. Rotational pullback imaging scans are performed in rabbit iliac artery, porcine coronary artery, and rabbit arteries with drug-eluting metal stents, in parallel with commercial intravenous ultrasound scans as reference. Results demonstrated the advantages of high-resolution AO-IVUS in delineating details in vascular structures, showing great potential in clinical applications.

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“…It can be minimized through good design. Noise negatively affects the precision of measurements and, for any single measurement, may introduce errors inaccuracy as well [10,11].…”

Section: Methodsmentioning

confidence: 99%

Slit Width Effect on Signal-to-noise Ratio in Spectrophotometric Measurements

2020

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IGNAL-to-noise (S/N) ratio theory has proven to be useful in understanding, designing, and optimizing spectrophotometric measurement systems. Although a narrower spectral bandwidth does improve the resolution of closely spaced peaks, it also decreases the Signalto-noise ratio. The narrowest slit width should be used that will yield an acceptable Signalto-noise ratio. In this research, the wavelengths of peak absorbance of the holmium glass filter were determined to attain the optimum Signal-to-noise ratio accompanied with spectral bandwidths of 0.1 nm, 0.2 nm, 0.5 nm, 0.8 nm, 1 nm, 2 nm, 3 nm and 5 nm. The influence of spectral bandwidth on the Signal-to-noise ratio was by far the most important parameter affecting the location of the measured wavelengths of absorbance or transmittance of the sample.

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Noise reduction in resonator-based ultrasound sensors by using a CW laser and phase detection

Cited by 26 publications

References 20 publications

Silicon photonics ultrahigh-resolution in vivo optoacoustic tomography

Silicon photonics ultrahigh-resolution in vivo optoacoustic tomography

Ultrawide-bandwidth high-resolution all-optical intravascular ultrasound using miniaturized photoacoustic transducer

Slit Width Effect on Signal-to-noise Ratio in Spectrophotometric Measurements

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