This work is concerned with fiber Bragg grating (FBG) writing technique developed for graded-index multimode optical fibers applied in measurement systems based on a few-mode
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This article discusses how one can effectively couple light from the fundamental mode of a multimode fiber into a certain higher-order mode. This is surprisingly
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A new all-fiber sensor capable of simultaneous measurement of strain and temperature is presented. The sensor system is formed by a fiber Bragg grating and two sections of multimode
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It is significant to note that the grating reflectivity continued to grow even after the irradiation power was turned off . Similar phenomenon was also observed in Bragg gratings in
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Characteristics of Multimode Fiber Bragg Gratings and Their Influences on External-Cavity Semiconductor Lasers
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A short fiber Bragg grating (FBG) is successfully written in a multimode fiber (MMF) with core and cladding diameters of 50 μm and 125 μm using 800 nm femtosecond laser side-illumination
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It is based on the analysis of the reflection spectrum from the multimode fiber Bragg grating. The mode composition of radiation in the multimode fiber with 40 µm core diameter,
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We describe a novel and highly efficient multimode waveguide grating coupler which can simultaneously and selectively launch three mode channels (LP 01, LP 11 and LP 12) in a graded-index multi-mode
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Bragg gratings formed in optical fibers in multimode propagation show multiple reflection peaks or multiple transmission dips in the reflection or
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One way of implementing such a scrambler is to use a long-period multimode fiber grating (LPMFG) with grating period tuned to phase-match modes from adjacent mode groups. However, a careful design
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The demand for infection control and workflow efficiency has highlighted the need for flexible and disposable endoscopic imaging solutions. Most disposable endoscopes rely on electronic imaging
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In this work, we have demonstrated that Bragg gratings inscribed in an optical fiber with two identical coupled cores can be used to develop intensity-modulated sensors.
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A novel approach for the reconstruction of the mode composition of optical radiation in multimode fiber is presented. It is based on the analysis of the reflection spectrum from the multimode fiber Bragg grating.
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We report what is believed to the first example of graded index multimode fiber slanted grating. The gratings are realized by the same technique as the single mode fiber gratings. The
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It examines multimode fiber optic sensing techniques based on grating transducer mechanisms. The sensors discussed in the chapter intended to provide examples that illustrate
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In this paper, we describe a simulation method to analyze the spectral properties of fiber Bragg gratings written in silica-based multimode graded-index fiber, and compare the simulation
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Essentially, fiber gratings are fibers with modulated refractive index of the core and are mostly fabricated in single mode fibers . However, recently, it has been reported that fiber gratings
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Bragg gratings formed in multimode graded-index fiber showed multiple reflection spectra. The reflectivities were 96.6% for few-mode excitation and 36% for uniformly multimode
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Applications of multimode fibre Bragg gratings to optical sensing and optical communications are discussed.
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couplers working in conjunction with multimode fibers. This combination enables simpler, faster, and more reliable connections than the traditional small area grating coupler with single mode fiber. In
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At the Bragg grating position of this highly multimode fiber, any desired principal mode groups can be successfully chosen. These experimental results suggest that adaptive control of optical wavefront in
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We describe a novel and highly efficient multimode waveguide grating coupler which can simultaneously and selectively launch three mode channels (LP01,LP11 and LP12) in a graded-index multi-mode
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We report what is believed to the first example of graded index multimode fiber slanted grating. The gratings are realized by the same technique as the single mode fiber gratings. The
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Coupling characteristics of core higher-order modes LP 0m with optical fiber gratings written in step-index multimode fiber (MMF) and their application in mode-division multiplexing (MDM)
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A dual-pitch staggered long-period fiber grating (DSP-LPFG) is proposed and experimentally verified, enabling efficient mode conversion between two distinct mode pairs.
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Bragg gratings in optical fibers in multimode propagation are investigated experimentally and theoretically. Bragg gratings formed in optical fibers in multimode propagation show multiple
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