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Showing 1 to 13 of 13 for “"Multimode Fibers"”.
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Optical Coherence Sensors in Multimode Fibers
… and utilized broadly in optical sensing systems. Multimode fibers (MMFs) offer low coupling loss, high compatibility with various light sources, and insensitivity to ambient fluctuations, which are preferred for reliable and low-cost sensing systems. Therefore, the combination of optical coherence …
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Adaptive Mode Control in Few-Mode and Highly Multimode Fibers
Few-mode fibers (FMFs) and multimode fibers (MMFs) can provide much higher data-carrying capacities compared with single-mode fibers. But in order to achieve this goal, one must address the challenge of intermodal coupling and dispersion. Therefore the ability to accurately control the optical …
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Optical Propagation of Self-sustaining Wavefronts and Nonlinear Dynamics in Parabolic Multimode Fibers
… topic of supercontinuum generation in parabolic multimode fibers which, in the upcoming years, has great potential of becoming important in optics.
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Optical fiber modal domain sensors for dynamic strain measurement
… for the intensity distribution emerging from a multimode fiber is formulated, covering both few mode and highly multimode fibers, and new expressions for their sensitivity to both radial and axial strain are derived. Optimized multimode fibers are seen to show an intrinsic phase sensitivity …
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Axial strain effects on optical fiber mode patterns
Axial strain effects in multimode fibers are studied. A few-mode fiber is mounted on a tensile testing machine and strained at various speeds. The output of a monochromatic light source passing through it is monitored and recorded. Relations are noted between the light output the magnitude of …
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Micro-optical fiber devices used with modal domain sensing
… A third device, the air-gap splice used with multimode fibers, can examine the modal content of an optical fiber. A basic theoretical understanding on how these devices operate is reviewed. A splice loss calculation for few-moded optical fibers is presented. Applications of the asymmetrical …
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High resolution optical time domain reflectometry and its applications
… acceptable performance < 0.2 dB losses) for multimode fibers.
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Adaptive Fiber Source for Label-free Nonlinear Microscopy
… nonlinear microscopy generation efficiency. Multimode fibers (MMFs) are regaining interest as light sources due to their high-dimensional spatiotemporal nonlinear dynamics and scalability for high power. MMF sources with effective control of nonlinear processes would enable new possibilities …
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Devitrification Kinetics and Optical Stability of Optical Fibers at High Temperatures
… sensing and monitoring systems based on optical fibers operating at high temperatures and in harsh environments are of high demand. One of the limitations of such systems is the devitrification of the fused silica based core and cladding glass at elevated temperatures. Crystallites can nucleate …
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Modeling, Analysis, and Design of Subcarrier Multiplexing on Multimode Fiber
… on the use of subcarrier multiplexing (SCM) in multimode fibers, utilizing carrier frequencies above what is generally utilized for multimode fiber transmission, to achieve high bit rates. In the high frequency region (i.e., frequencies larger than the intermodal bandwidth), the magnitude …
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Investigation of Bragg Gratings in Few-Mode Fibers with a Femtosecond Laser Point-by-Point Technique
… (FBGs) written in the step-index two-mode fibers. We also develop a numerical model for the PbP gratings which has the potential for inverse design problem. Chapter 2 begins with a general framework of MDM with adaptive wavefront shaping in few-mode fibers (FMFs) and multimode fibers …
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Adaptive Control of Waveguide Modes in Two-Mode Fibers
Few mode fibers and multimode fibers (MMFs) are traditionally regarded as unsuitable for important applications such as communications and sensing. A major challenge in using MMFs for aforementioned applications is how to precisely control the waveguide modes propagating within MMFs. In this …
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Development of a Fiberoptic Microneedle Device for Simultaneous Co-Delivery of Fluid Agents and Laser Light with Specific Applications in the Treatment of Brain and Bladder Cancers
… mechanical penetration and optical delivery of multimode fiberoptics and capillary tubes modified through a custom, CO2 laser melt-drawing technique. Additional work with multimode fibers investigated using an elastomeric lateral support medium to ensure robust penetration of small diameter …