A5030167039- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Photonic Crystal and Fiber Optics
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Laser Technologies
- Orthopedic Infections and Treatments
- Laser Material Processing Techniques
- Optical Coatings and Gratings
- Orthopaedic implants and arthroplasty
- Total Knee Arthroplasty Outcomes
South China University of Technology
2024
Guangzhou Medical University
2024
Guangzhou First People's Hospital
2024
Communications Research Centre Canada
2003-2012
Femtosecond laser pulses at 800 nm and 120 fs were used to fabricate high-quality retroreflecting fiber Bragg gratings in standard Ge-doped telecom (Corning SMF-28) all-silica-core Fluorine doped cladding single-mode using a deep-etch silica zero-order nulled phase mask. Induced index modulations of 1.9/spl times/10/sup -3/ achieved with peak power intensities 2.9/spl 12/ W/cm/sup 2/ without any sensitization such as hydrogen loading. The have annealing characteristics similar type II damage...
ABSTRACT Objectives Although total hip arthroplasty (THA) effectively alleviates pain and restores joint function in the end‐stage disease, challenges remain achieving precise osteotomy minimizing subjective dependency on prosthesis positioning. This study aims to evaluate efficacy safety of preoperative virtual planning navigation templates compared conventional techniques, providing new methods enhance precision personalization THA. Methods During period from 2022 2023, we conducted a...
Multimode sapphire fiber Bragg gratings (SFBG) made with an IR femtosecond laser and a phase mask were probed using tapered single mode fibers of different taper diameters producing low order reflection/transmission responses. A configuration input multimode silica used for output coupling was also tested has delivered filtered transmission spectrum. The improved the spectral resolution SFBG as compared to its responses previously reported. Such improvements facilitate utilization high...
Fiber Bragg Gratings were written in hydrogen loaded fiber with ultrafast 800nm radiation. Improvements photosensitivity the IR observed H2 SMF-28 while no improvement SiO2 core fibre observed.
Retro-reflective Bragg gratings were made with femtosecond radiation from a Ti: sapphire IR laser in the cladding region of tapered single mode fiber. The evanescent field taper interacts ambient environment and intensity reflected signal is used to evaluate refractive index changes as low 2.5×10-
The dispersion curves of tapered fibers at various geometries are characterized by using white-light interferometry. In this presentation, the interference patterns frequencies near taper's second zero-dispersion frequency measured and discussed in detail. A more convenient formula is proposed to fit experimental data these frequencies. As a result, small values can be calculated efficiently.
The polymer polydimethylsiloxane (PDMS) whose refractive index and shape vary with absorbed organic compounds pressure is used as the cladding layer in tapered region of an optical fiber. light propagation influenced by changes PDMS due to evanescent field. By monitoring fiber transmission power variations, compound/ sensor developed.
Traditionally in the process of writing fiber Bragg gratings with a phase mask is placed near or close contact mask. With low coherence excimer sources this necessary because fringe visibility greatly reduced beyond 500 μm. As result these limitations there has been increased interest understanding interference phenomena associated During past year we studied beam ultrafast gratings. We observed that coherent it was possible to write remotely (Phase Mask-Fiber distance ≈1 cm). In addition...