Showing papers in "Optical Fiber Technology in 2017"

TL;DR: In this paper, a porous core circular photonic crystal fiber (PC-CPCF) with ultra-low material loss for efficient terahertz wave transmission is presented.

TL;DR: The current state of research into polymer optical fiber (POF) sensors linked to safety in human life is summarized in this paper, with new solutions for civil aircraft, structural health monitoring, healthcare and biomedicine fields.

TL;DR: In this article, a review of space division multiplexing (SDM) transmission experimental demonstrations and associated technologies is presented, where various types of multicore and multimode SDM fibers, amplification, and spatial multi/demultiplexers have helped achieve high-capacity DSDM transmission.

TL;DR: In this article, the fabrication and characterization of no-core fiber sensor (NCFS) using smart hydrogel coating for pH measurement is reported, which shows a high sensitivity of 1.94 nm/pH for a wide range of pH values varied from 3 to 10.

TL;DR: In this article, a three-mode 12-core fiber with low-DMD low-IC-XT achieves long-haul DSDM transmission over 500 km, and the design concept, fiber design, and characteristics of the fabricated threemode 12 core fiber are also described.

TL;DR: In this paper, an investigation of the thermal annealing effects on the strain, stress, and force sensitivities of polymer optical fiber Bragg grating sensors is performed, with the possible cause being the molecular relaxation of the polymer when fiber is raised above the β-transition temperature.

TL;DR: In this article, the authors discuss the theory and function of the photonic lantern, along with several different variants of the technology needed for their use in Space Division Multiplexing communications, focusing on the fiber-bundle photonic Lanterns type.

TL;DR: In this article, the operation principle and basic characteristics of PLC-based mode multi/demultiplexers (MUX/DEMUXs) for mode division multiplexing (MDM) transmission are reviewed.

TL;DR: In this article, a novel humidity sensor, which adopts a Mach-Zehnder interferometer (MZI) in normal single mode fiber (SMF) modified by the deposition of chitosan (a moisture-sensitive natural polymer) on the cladding, is proposed and experimentally demonstrated.

TL;DR: A novel nature-inspired heuristic paradigm called Moth-Flame optimization (MFO) algorithm is proposed for multiple optical network units’ placement in FiWi and results in faster convergence than the existing strategies of Greedy and SA and returns a lower value of overall cost function.

TL;DR: It is shown that limited spectral efficiency and power margin will inhibit scaling of direct detection-compatible formats beyond 100 Gbit/s, and presents low-power DSP-free coherent and differentially coherent alternatives that avoid high-speed ADCs and DSP and achieve similar performance to their D SP-based counterparts in intra- data center links and dispersion-compensated inter-data center links.

TL;DR: In this paper, the authors report the first extended study of the inscription of Bragg gratings in surface-core fibers and their application in refractive index and directional curvature sensing.

TL;DR: In this paper, the authors summarize how OAM enables efficient mode multiplexing for optical communications, with emphasis on the design of OAM fibers, and propose a method to exploit the spatial dimension of light to increase the capacity of optical fiber links.

TL;DR: In this paper, a novel refractive index (RI) sensor based on middle-tapered multicore fiber (TMCF) was proposed and experimentally demonstrated, which achieved a sensitivity around 171.2 nm/RIU for a refractive indices range from 1.3448 to 1.3774.

TL;DR: In this paper, a high sensitivity measurement method for temperature has been proposed and investigated based on an isopropanol-filled photonic crystal fiber long period grating (PCF-LPG).

TL;DR: In this article, the authors presented the results of experimental investigations of the fiber optic hydrophone array consisting of six sensors, placed in one thin sensitive cable, where sensors were formed by pairs of Bragg gratings spaced 1.5 meters apart and recorded in birefringent optical fiber with the elliptical stressed coating.

TL;DR: In this article, a compact coupled microfiber Mach-Zehnder interferometer (CM-MZI) is proposed and experimentally demonstrated for C-band region multi-wavelength tuning and switching in a fiber laser.

TL;DR: In this article, a Fabry-Perot pressure sensor using a corrugated diaphragm and angle polished fiber is proposed, which has high sensitivity and good linearity over the pressure range of 0.1 -1.

TL;DR: In this paper, the performance analysis of a D-type photonic crystal fiber (D-type PCF) for refractive index sensing, based on surface plasmon resonance (SPR) with a planar structure made out of a metamaterial.

TL;DR: In this article, a vibration sensing technique with frequency-multiplexed phase-sensitive optical time domain reflectometry (phase-OTDR) was proposed to locate a high-speed vibration point.

TL;DR: In this paper, a space division multiplexing (SDM) has been proposed to overcome the limitation of standard single-mode fiber (SSMF) due to fiber nonlinearity, which prevents increasing transmission power and finite amplifier bandwidth.

TL;DR: It has been conclusively established that the proposed routing and spectrum assignment strategies (LLRSA and RFARSA) outperform the existing strategies in terms of all the metrics.

TL;DR: In this article, a temporal lenticular lens is proposed to simultaneously sample and magnify an arbitrary-shaped optical signal, by applying a sinusoidal phase-modulation, the signal under test is propagated through a discrete dispersive element that samples and magnifies its initial waveform.

TL;DR: In this paper, a few-mode fiber (FMF) technology for mode-division multiplexing (MDM) transmission has been proposed for both without and with MIMO digital signal processing (DSP) to compensate for modal crosstalk.

TL;DR: The proposed SADQ is the first scheme in optical networks to employ exhaustive differentiation at the levels of routing, spectrum allocation, and survivability in a single algorithm and is compared with two existing benchmark routing and spectrum allocation schemes designed under EONs.

TL;DR: In this paper, a side-polished plastic optical fiber (POF) was proposed for liquid's refractive index (RI) measurement, and the POF was polished into an arc shape on the surface of the fiber for increasing its RI sensitivity.

TL;DR: By keeping the same code length and increasing the spatial code, the performance of the 2D-DCS system is enhanced: it provides higher data rates while using lower transmitted power and a smaller spectral width.

TL;DR: A new variable-weight code based on spectral amplitude coding for optical code-division multiple-access (OCDMA) networks to support QoS differentiation and it is shown that the proposed code provides an optimal code length with minimum cross-correlation value when compared to other codes.

TL;DR: In this article, a mixed super-channel oriented routing, spectrum and core assignment (MS-RSCA) algorithm is proposed in SDM-EONs considering inter-core crosstalk.

TL;DR: The general context of the work on Few-Mode Erbium-Doped Fiber Amplifiers is recalled and the main results reported so far on this topic are reviewed.