Quadruple-Wavelength EDF Laser Based on Chirped Fiber Grating and 62.5 μm Multimode Fiber
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Global and local speckle variation in tensioned multimode fiber
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Modelling of ATR-FTIR MEMS Spectrometer under Partially-Coherent Multimode-Fiber Illumination
Sign Up to like & getrecommendations! 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
Spatial Beam Self-Cleaning in Tapered Yb-Doped GRIN Multimode Fiber With Decelerating Nonlinearity
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Focus quality in raster-scan imaging via a multimode fiber.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.458146
Abstract: A multimode fiber (MMF) is a minimally invasive imaging probe. The most popular approach of MMF-based microscopy is raster-scan imaging, where the sample is illuminated by foci optimized on the fiber output facet by wavefront… read more here.
Keywords: multimode fiber; raster scan; scan imaging; imaging via ... See more keywords
Speckle classification of a multimode fiber based on Inception V3.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.463764
Abstract: Multimode optical fiber plays an important role in endoscope miniaturization. With the development of deep learning and machine learning, neural networks can be used to identify and classify speckle patterns obtained at the fiber output.… read more here.
Keywords: multimode fiber; inception; speckle classification; fiber ... See more keywords