Results 31 to 40 of about 4,276 (223)

Security‐Enhanced Differential Binary‐Phase‐Shift‐Keying Quantum Key Distribution With a Wavelength‐Switchable Single‐Photon Carrier

open access: yesAdvanced Photonics Research, Volume 7, Issue 6, June 2026.
A single‐chip dual‐wavelength coherent photon source is proposed to add parametric uncertainty and improve the security of single‐photon differential binary‐phase‐shift‐keying quantum key distribution. This wavelength‐uncertain coding or decoying operation enables flexible and secure D‐BPSK‐QKD transmission over a wavelength‐division‐multiplexed ...
Sze‐En Lai   +4 more
wiley   +1 more source

IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks [PDF]

open access: yes, 2013
Wavelength Switched Optical Networks (WSON) were designed with the premise that all channels in a network have the same spectrum needs, based on the ITU-T DWDM grid.
Munoz, Raul   +8 more
core  

Magnetically Tunable Micro-Ring Resonators for Massive Magneto-Optical Modulation in Dense Wavelength Division Multiplexing Systems

open access: yesSensors, 2022
We demonstrate, numerically, a new concept for on-chip magneto-optical (MO) modulation in dense wavelength division multiplexing (DWDM) applications. Our idea uses materials and mechanisms that are compatible with current silicon-on-insulator fabrication
Josino Villela S. Neto   +2 more
doaj   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

open access: yesAdvanced Science, Volume 13, Issue 36, 29 June 2026.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Performance Enhancement of DWDM-FSO Optical Fiber Communication Systems Based on Hybrid Modulation Techniques under Atmospheric Turbulence Channel

open access: yesPhotonics, 2021
In this paper, we enhance the performance efficiency of the free-space optical (FSO) communication link using the hybrid on-off keying (OOK) modulation, M-ary digital pulse position modulation (M-ary DPPM), and M-pulse amplitude and position modulation ...
Mohammed R. Hayal   +2 more
doaj   +1 more source

Lithium Niobate Quadratic Integrated Nonlinear Photonics: Enabling Ultra‐Wide Bandwidth and Ultrafast Photonic Engines

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
This perspective surveys emerging quantum and classical photonic applications across operating wavelengths and timescales, highlighting persistent technological gaps in integrated light sources. We examine the unique advantages of quadratic nonlinear photonics on the thin‐film lithium niobate (TFLN) platform and discuss strategies for realizing ...
Meng Tian   +7 more
wiley   +1 more source

DWDM Channel Spacing Effects on the Signal Quality for DWDM/CWDM FTTx Network

open access: yesJournal of Optical Communications, 2019
Abstract In this paper, two models of fiber-to-the-x (FTTx) networks are provided, one of hybrid dense wavelength division multiplexing/coarse wavelength division multiplexing (DWDM/CWDM) with high subscriber’s allocated bandwidth, and the other of hybrid ultra-dense wavelength division multiplexing/coarse wavelength division ...
K. Vinoth Kumar   +5 more
openaire   +2 more sources

Optical Fiber Sensors for Safety and Maintenance Monitoring of Linear Infrastructure

open access: yesAdvanced Sensor Research, Volume 5, Issue 5, May 2026.
This review rigorously provides a thorough and detailed overview of the most recent innovations and advancements in the field of railway and pipeline infrastructure monitoring, accomplished through the implementation of cutting‐edge fiber sensing technologies, with a specific emphasis on its two principal technical branches, namely multipoint sensing ...
Shengnan Wu   +10 more
wiley   +1 more source

Photonic Hybrid Integration: Strategies and Promises of Advanced Additive Manufacturing

open access: yesAdvanced Optical Materials, Volume 14, Issue 10, 13 March 2026.
Heterogeneous photonic integration combines wafer bonding, transfer printing, and advanced multi‐photon lithography to realize compact, adaptable photonic systems. This review highlights breakthroughs in hybrid materials, metrology, and 4D printing, revealing how the convergence of traditional and emerging fabrication unlocks scalable, high‐performance
Zhitian Shi   +3 more
wiley   +1 more source

Experimental Comparison of Optical Phase Conjugation and DCF Aided [PDF]

open access: yes, 2005
The performance of DWDM 2x10.7Gbit/s-DQPSK is assessed comparing mid-link optical phase conjugation (OPC) and DCF for dispersion compensation. We report a 44%-increase in transmission distance resulting from nonlinear phase noise reduction by using mid ...
Dwdm Gbit Dqpsk
core  

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