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   Articles with "multimode fiber" as a keyword



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Quadruple-Wavelength EDF Laser Based on Chirped Fiber Grating and 62.5 μm Multimode Fiber

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recommendations! Published in 2021 at "Journal of Russian Laser Research"

DOI: 10.1007/s10946-021-09949-2

Abstract: We propose and experimentally demonstrate a novel switchable quadruple-wavelength CW erbium-doped fiber laser, using a linear cavity structure. It is composed of two Sagnac loops that act as cavity mirrors in the resonant cavity. The… read more here.

Keywords: chirped fiber; quadruple wavelength; multimode fiber; laser ... See more keywords

Modulation transfer function of the imaging probe using an 8.8 mm-long and 125 µm-thick graded- index short multimode fiber

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recommendations! Published in 2017 at "Optics Communications"

DOI: 10.1016/j.optcom.2016.10.007

Abstract: Abstract We measured the modulation transfer function (MTF) of a short multimode fiber (SMMF) probe and proposed the optical model including the thin random phase screen (TRPS) to explain degradations of imaging characteristics. SMMF is… read more here.

Keywords: multimode fiber; modulation transfer; transfer function; short multimode ... See more keywords
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Global and local speckle variation in tensioned multimode fiber

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recommendations! Published in 2020 at "Optical Fiber Technology"

DOI: 10.1016/j.yofte.2020.102284

Abstract: Abstract We experimentally demonstrate strain-induced speckle variation. When we take the whole speckle into consideration, the correlation function under different strain decreases dramatically at the beginning, and then it saturates as strain increasing. This tendency… read more here.

Keywords: multimode fiber; speckle; speckle variation; global local ... See more keywords

Deep Learning for Estimating Deflection Direction of a Multimode Fiber From Specklegram

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recommendations! Published in 2021 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2020.3039961

Abstract: This study presents a novel approach and proof-of-concept for measuring the deflection direction of a multimode fiber's tip through analysis of the shape and structure of speckle patterns. First, we utilize a pendulum-based apparatus to… read more here.

Keywords: deflection direction; deflection; direction; multimode fiber ... See more keywords
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Modelling of ATR-FTIR MEMS Spectrometer under Partially-Coherent Multimode-Fiber Illumination

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recommendations! Published in 2021 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2021.3110810

Abstract: Miniaturization of attenuated total reflectance (ATR) spectrometers has been an emerging field applying such powerful surface sensing method for in-situ spectroscopic analysis. In this work, we present a model for field propagation through ATR element… read more here.

Keywords: multimode fiber; illumination; fiber; output ... See more keywords

Retrieving the Complex Transmission Matrix of a Multimode Fiber by Machine Learning for 3D Beam Shaping

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recommendations! Published in 2024 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2024.3373689

Abstract: There is an upward trend in using multimode fiber for an increasing number of applications such as optical telecommunication, endoscopic imaging or laser beam shaping, which require knowledge of the fiber characteristics. In this paper,… read more here.

Keywords: complex transmission; beam; fiber; transmission matrix ... See more keywords

A Thermodynamic Approach to Linear and Quantum Cross-Talk in Multimode Fiber Systems

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recommendations! Published in 2025 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2025.3531966

Abstract: Optical thermodynamic theory is extended to low-power multimode fiber systems to characterize with simple thermodynamic models the complex scenario of power exchange induced by random mode coupling between propagating modes. It is theoretically and experimentally… read more here.

Keywords: thermodynamic approach; fiber systems; quantum; power ... See more keywords

Spatial Beam Self-Cleaning in Tapered Yb-Doped GRIN Multimode Fiber With Decelerating Nonlinearity

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recommendations! Published in 2020 at "IEEE Photonics Journal"

DOI: 10.1109/jphot.2020.2979938

Abstract: We experimentally demonstrate spatial beam self-cleaning in an Yb-doped graded-index multimode fiber taper, both in passive and active configurations. The input laser beam at 1064 nm was injected for propagation from the small to the large… read more here.

Keywords: self cleaning; multimode fiber; spatial beam; beam ... See more keywords

Mode Dependence of Refractive Index Sensitivity of Long-Period Fiber Gratings Induced by Periodically Embedded Multimode Fiber

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recommendations! Published in 2023 at "IEEE Sensors Journal"

DOI: 10.1109/jsen.2023.3263733

Abstract: In this article, we present and verify the mode dependence of refractive index (RI) sensitivity of long-period fiber grating induced by periodically embedded multimode fiber (PEM-LPFG). The PEM-LPFG is first fabricated by periodically embedding multimode… read more here.

Keywords: multimode fiber; pem lpfg; sensitivity; dependence ... See more keywords

Polarization Transmission Matrix for Completely Polarization Control of Focal Spots in Speckle Field of Multimode Fiber

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recommendations! Published in 2020 at "IEEE Journal of Selected Topics in Quantum Electronics"

DOI: 10.1109/jstqe.2020.2964397

Abstract: The propagation of light transmitting through a scattering medium generates random speckle. Transmission matrix (TM) is introduced to describe this transmission process. In general, only scalar TM is considered. Meanwhile, for a non-polarization maintaining multimode… read more here.

Keywords: transmission matrix; multimode fiber; polarization; transmission ... See more keywords

Self restorable intra data center interconnect based on multimode fiber and free-space optics

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recommendations! Published in 2021 at "Optical Engineering"

DOI: 10.1117/1.oe.60.3.036113

Abstract: Abstract. We demonstrate a high data rate and low-cost OM4 multimode fiber (MMF) and free-space optics (FSO)-based self-restorable 2  ×  100  Gbps per wavelength intra data center interconnect between two pairs of servers. This transmission system is based… read more here.

Keywords: intra data; free space; multimode fiber; self restorable ... See more keywords