Results 11 to 20 of about 3,023 (218)
Tilted fiber Bragg gratings in multicore optical fibers for optical sensing [PDF]
Optics Letters, 2017 We have inscribed a tilted fiber Bragg grating (TFBG) in selected cores of a multicore optical fiber. The presence of the TFBG permits to couple light from the incident-guided mode to the cladding modes and to the neighbor cores, and this interaction can be used for optical sensing.
Barrera Vilar, David +2 more
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Linking Distributed and Integrated Fiber‐Optic Sensing
Geophysical Research Letters, 2022 AbstractDistributed Acoustic Sensing (DAS) has become a popular method of observing seismic wavefields: backscattered pulses of light reveal strains or strain rates at any location along a fiber‐optic cable. In contrast, a few newer systems transmit light through a cable and collect integrated phase delays over the entire cable, such as the Microwave ...
Daniel C. Bowden +9 more
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Design and Fabrication of Fiber-Optic Nanoprobes for Optical Sensing [PDF]
Nanoscale Research Letters, 2010 AbstractThis paper describes the design and fabrication of fiber-optic nanoprobes developed for optical detection in single living cells. It is critical to fabricate probes with well-controlled nanoapertures for optimized spatial resolution and optical transmission.
Zhang Yan, Dhawan Anuj, Vo-Dinh Tuan
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Magnetic Sensing with Ferrofluid and Fiber Optic Connectors [PDF]
Sensors, 2014 A simple, cost effective and sensitive fiber optic magnetic sensor fabricated with ferrofluid and commercially available fiber optic components is described in this paper. The system uses a ferrofluid infiltrated extrinsic Fabry-Perot interferometer (EFPI) interrogated with an infrared wavelength spectrometer to measure magnetic flux density.
Daniel Homa, Gary Pickrell
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Optical Fiber Sensing Using Quantum Dots [PDF]
Sensors, 2007 Recent advances in the application of semiconductor nanocrystals, or quantumdots, as biochemical sensors are reviewed. Quantum dots have unique optical properties thatmake them promising alternatives to traditional dyes in many luminescence basedbioanalytical techniques.
Pedro Jorge +4 more
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Nature Communications, 2023 Ultra-high extinction ratio (ER) optical modulation is crucial for achieving high-performance fiber-optic distributed acoustic sensing (DAS) for various applications.
Zhuo Cheng +10 more
doaj +1 more source
Versatile Tunning of Compact Microring Waveguide Resonator Based on Lithium Niobate Thin Films
Photonics, 2023 With the advancement of modulation technology and the requirement for device miniaturization and integration, lithium niobate on insulator (LNOI) can be a versatile platform for this pursuit, as it can confine the transmitted light at the nanoscale ...
Qijing Lin +9 more
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“Fiber-Optic Cavities for Physical and Chemical Sensing” [PDF]
The Open Optics Journal, 2013 Fiber-optic resonators can be used as ideal mechanical probes and chemical sensors owing to their unique sensitivity to static and dynamic strain applied to the fiber as well as to optical absorption or refractive index changes in the surrounding medium when the evanescent or the internal light field is exposed. The intrinsic properties of high-finesse
Saverio Avino +2 more
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Short cavity DFB fiber laser based vector hydrophone for low frequency signal detection
Photonic Sensors, 2017 A short cavity distributed feedback (DFB) fiber laser is used for low frequency acoustic signal detection. Three DFB fiber lasers with different central wavelengths are chained together to make three-element vector hydrophone with proper sensitivity ...
Xiaolei Zhang +7 more
doaj +1 more source
IEEE Photonics Journal, 2021 We demonstrate a microfiber Bragg grating as the reflective refractometer with the function of self-photoheating. The rare earth-doped fiber provides not only the photosensitivity to the UV modulation but also the effective pump laser absorption and ...
Yongkang Zhang +6 more
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