Results 11 to 20 of about 35,064 (267)

Design and Fabrication of Fiber-Optic Nanoprobes for Optical Sensing [PDF]

open access: yesNanoscale 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
openaire   +3 more sources

Optical Fiber Sensing Using Quantum Dots [PDF]

open access: yesSensors, 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
openaire   +4 more sources

LD-Pumped Random Fiber Laser Based on Erbium-Ytterbium Co-Doped Fiber

open access: yesPhotonic Sensors, 2019
In this paper, a cladding-pumped erbium-ytterbium co-doped random fiber laser (EYRFL) operating at 1550 nm with high power laser diode (LD) is proposed and experimentally demonstrated for the first time.
Qingyang Meng   +4 more
doaj   +1 more source

All-fiber optical nonreciprocity based on parity-time-symmetric Fabry-Perot resonators

open access: yesCommunications Physics, 2022
Optical nonreciprocity is of fundamental importance for signal processing in modern optical communication systems but is still facing issues on either high energy consumption, complicated design or on-chip integration.
Zheng Li   +5 more
doaj   +1 more source

Magnetic Sensing with Ferrofluid and Fiber Optic Connectors [PDF]

open access: yesSensors, 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
openaire   +5 more sources

On-chip silicon electro-optical modulator with ultra-high extinction ratio for fiber-optic distributed acoustic sensing

open access: yesNature 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

open access: yesPhotonics, 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
doaj   +1 more source

“Fiber-Optic Cavities for Physical and Chemical Sensing” [PDF]

open access: yesThe 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
openaire   +1 more source

Computational distributed fiber-optic sensing

open access: yesOptics Express, 2019
Ghost imaging allows image reconstruction by correlation measurements between a light beam that interacts with the object without spatial resolution and a spatially resolved light beam that never interacts with the object. The two light beams are copies of each other.
Zhou, Da-Peng   +3 more
openaire   +3 more sources

Rare Earth-Doped Microfiber Bragg Grating Refractive Index Sensor With Self-Photothermal Manipulation

open access: yesIEEE 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
doaj   +1 more source

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