Results 21 to 30 of about 3,786 (224)

Quantum key distribution integration with optical dense wavelength division multiplexing: a review

open access: yesIET Quantum Communication, Volume 1, Issue 1, Page 9-15, July 2020., 2020
Quantum key distribution (QKD) can ensure information security between two remote parties. To commercialise QKD technology successfully, it should be integrated with dense wavelength division multiplexing optical transport. However, various challenges limit the QKD's performance in terms of the quantum key rate, quantum bit error rates, and maximum ...
Arash Bahrami   +2 more
wiley   +1 more source

Tunable Multiwavelength Optical Comb Enabled WDM-OFDM-PON With Source-Free ONUs

open access: yesIEEE Photonics Journal, 2018
In this paper, we propose and experimentally demonstrate a multiuser wavelength-division-multiplexing passive optical network (WDM-PON) system combining with orthogonal frequency division multiple (OFDM) technique. A tunable multiwavelength optical comb (
Xuwei Xue   +4 more
doaj   +1 more source

REAM intensity modulator-enabled 10Gb/s colorless upstream transmission of real-time optical OFDM signals in a single-fiber-based bidirectional PON architecture [PDF]

open access: yes, 2012
Reflective electro-absorption modulation-intensity modulators (REAM-IMs) are utilized, for the first time, to experimentally demonstrate colorless ONUs in single-fiber-based, bidirectional, intensity-modulation and direct-detection (IMDD), optical OFDM ...
Chow   +21 more
core   +1 more source

Time Domain Equalization and Digital Back‐Propagation Method‐Based Receiver for Fiber Optic Communication Systems

open access: yesInternational Journal of Optics, Volume 2020, Issue 1, 2020., 2020
Fiber optic communication systems (FOCSs) have attained a lot of attention by revolutionizing the telecommunication industry and offering new possibilities with the technical advancements in state‐of‐the‐art high speed digital electronics. Advanced modulation formats make use of the phase, amplitude, and polarization of the optical signals at the same ...
Fazal Muhammad   +6 more
wiley   +1 more source

Hybrid Self-Protected Fiber-FSO WDM-PON System with Fiber Breakage Prevention

open access: yesPhotonics, 2022
In this research, we present and design a blended wavelength-division-multiplexing passive optical network (WDM-PON) architecture to deliver both baseband and free-space optical (FSO) signals by using two wavelength bands over an available bandwidth to ...
Ching-Hsuan Hsu   +7 more
doaj   +1 more source

Simultaneous Provision of UWB and Wired Services in a WDM-PON Network Using a Centralized Light Source

open access: yesIEEE Photonics Journal, 2010
Simultaneous provision of multiple services using a centralized light source can greatly reduce the complexity and cost of a wavelength-division multiplexing passive optical network (WDM-PON).
Shilong Pan, Jianping Yao
doaj   +1 more source

Optical Power Budget Analysis of WDM-PON Traffic Protection Schemes

open access: yesPhotonics
To ensure high-quality and reliable service provision for customers, advanced optical networks without active elements have been developed to increase operating reliability, network scalability, and resource efficiency.
Filip Fuňák, Rastislav Róka
doaj   +1 more source

Transmission transparency and potential convergence of optical network solutions at the physical layer for bit rates from 2.5 Gb·s-1 to 256 Gb·s-1 [PDF]

open access: yes, 2017
In this paper, we investigate optical network recommendations GPON and XG-PON with triple-play services in terms of physical reach, number of subscribers, transceiver design, modulation format and implementation cost.
Agalliu, Rajdi, Lucki, Michal
core   +2 more sources

Using Downstream DPSK and Upstream Wavelength-Shifted ASK for Rayleigh Backscattering Mitigation in TDM-PON to WDM-PON Migration Scheme

open access: yesIEEE Photonics Journal, 2013
A migration scheme from time-division-multiplex passive optical network (TDM-PON) to wavelength-division-multiplex PON (WDM-PON) using differential phase-shift keying (DPSK) for the downstream signal and wavelength-shifted amplitude-shift keying (WS-ASK)
C. W. Chow, C. H. Yeh
doaj   +1 more source

Full-Asynchronous Gigabit-Symmetric DPSK Downstream and OOK Upstream OCDMA-PON with Source-Free ONUs Employing All-Optical Self-Clocked Time Gate [PDF]

open access: yes, 2012
We propose an asynchronous gigabit-symmetric optical code division multiplexing access passive optical network (OCDMA-PON) in which optical network units (ONUs) are source-free. In the experiment, we demonstrate a duplex OCDMA system with a 50 km 10 Gbit/
Dai, Bo   +3 more
core   +1 more source

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