S
Samir Ghalmi
Publications - 53
Citations - 1810
Samir Ghalmi is an academic researcher. The author has contributed to research in topics: Optical fiber & Photonic-crystal fiber. The author has an hindex of 18, co-authored 53 publications receiving 1690 citations.
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Journal ArticleDOI
Spatially and spectrally resolved imaging of modal content in large-mode-area fibers
TL;DR: A new measurement technique, capable of quantifying the number and type of modes propagating in large-mode-area fibers is both proposed and demonstrated, based on both spatially and spectrally resolving the image of the output of the fiber under test.
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Light propagation with ultralarge modal areas in optical fibers.
Siddharth Ramachandran,Jeffrey W. Nicholson,Samir Ghalmi,Man Yan,Patrick W. Wisk,Eric M. Monberg,F. V. Dimarcello +6 more
TL;DR: In this article, the authors demonstrate robust single-transverse-mode light propagation in higher-order modes of a fiber, with effective area Aeff ranging from 2100 to 3200 μm2.
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Ultra‐large effective‐area, higher‐order mode fibers: a new strategy for high‐power lasers
Siddharth Ramachandran,John M. Fini,Marc D. Mermelstein,Jeffrey W. Nicholson,Samir Ghalmi,Man F. Yan +5 more
TL;DR: In this paper, the authors describe the physics and properties of a novel optical fiber that would be attractive for building high-power fiber lasers and amplifiers, and demonstrate that for applications requiring meter-length fibers, signal stability actually increases with mode order.
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Anomalous dispersion in a solid, silica-based fiber.
Siddharth Ramachandran,Samir Ghalmi,Jeffrey W. Nicholson,Man Yan,Patrick W. Wisk,Eric M. Monberg,F. V. Dimarcello +6 more
TL;DR: An all-solid (nonholey), silica-based fiber with anomalous dispersion at wavelengths where silica material dispersion is negative is demonstrated, achieved by exploiting the enhanced dispersion engineering capabilities of higher-order modes in a fiber.
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Biosensors employing ionic self-assembled multilayers adsorbed on long-period fiber gratings
Zhiyong Wang,James R. Heflin,Kevin E. Van Cott,Rogers H. Stolen,Siddharth Ramachandran,Samir Ghalmi +5 more
TL;DR: In this paper, an ionic self-assembled multilayers (ISAM) adsorbed on long period gratings (LPGs) function effectively as biosensors using biotin-streptavidin as a demonstration bioconjugate pair.