Results 11 to 20 of about 7,939 (303)

Multi-format transmitters for coherent optical M-PSK and M-QAM transmission [PDF]

open access: yes, 2022
S.225-229Coherent optical transmission returns into the focus of research. One significant advantage is the preservation of all the information of the optical field during detection, leading to enhanced possibilities for optical multi-level modulation ...
Seimetz, M.
core   +1 more source

Recent Advances in Optical Sideband Transmitters [PDF]

open access: yes, 2021
Optical single sideband (SSB) technique has recently attracted considerable attentions as an alternative transmitter for metro-haul applications. The optical SSB technique can double the spectral efficiency and is free from dispersion-induced power ...
Kim, Hoon   +7 more
core   +1 more source

Characterization of wavelength tunable lasers for future optical communication systems [PDF]

open access: yes, 2010
The use of tunable lasers (TL) in dense wavelength division multiplexed (DWDM) networks for optical switching, routing and networking has gained a lot of interest in recent years.
Anandarajah, Prince M.   +4 more
core   +1 more source

Optical wireless communications utilizing a dicode PPM PIN-BJT receiver [PDF]

open access: yes, 2005
Original results are presented for an optical wireless system employing dicode pulse position modulation (DiPPM) and a PIN-BJT receiver. When operating at and a bit rate of 10 Mb/s a sensitivity of –51 dBm (Pe=10-9) is achieved and this represents a ...
Cryan, R.A., Menon, M.
core   +1 more source

Quantitative analysis of optical network unit sleep technique with maintained latency for asymmetric usage by residential users

open access: yesThe Journal of Engineering, 2013
This study provides an insight into the effectiveness of an optical network unit (ONU) sleep technique, where a subcomponent of the ONU is powered down during the absence of input traffic.
Susumu Nishihara   +5 more
doaj   +1 more source

Bandwidth-Efficient WDM-CAP-PON Using Digital Hilbert Single-Sideband Modulation

open access: yesIEEE Photonics Journal, 2015
We propose a wavelength division multiplexing-carrier-less amplitude/phase modulation-passive optical network (WDM-CAP-PON) downstream with enhanced bandwidth efficiency using low-cost digital Hilbert single-sideband modulation.
Z. Dong, J. Yu, J. Lu
doaj   +1 more source

Dynamic Optical Wireless Power Transfer for Electric Vehicles

open access: yesIEEE Access, 2023
This research proposes and analyzes a dynamic optical wireless power transfer (OWPT) system for wireless charging of aerial and ground electric vehicles (EVs).
Dinh Hoa Nguyen
doaj   +1 more source

Measurement Based Reconfigurations in Optical Ring Metro Networks [PDF]

open access: yes, 2005
Single-hop wavelength division multiplexing (WDM) optical ring networks operating in packet mode are one of themost promising architectures for the design of innovative metropolitan network (metro) architectures. They permit a cost-effective design, with
J. M. FINOCHIETTO   +7 more
core   +1 more source

Optical Transmitters without Driver Amplifiers—Optimal Operation Conditions

open access: yesApplied Sciences, 2018
An important challenge in optical communications is the generation of highest-quality waveforms with a Mach–Zehnder modulator with a limited electrical swing (Vpp).
Arne Josten   +4 more
doaj   +1 more source

Laser-induced ultrasound transmitters for large-volume ultrasound tomography

open access: yesPhotoacoustics, 2022
We present a protocol for the design, fabrication and characterisation of laser-induced ultrasound transmitters with a specific, user-defined frequency response for the purpose of ultrasound tomography of large-volume biomedical samples.
D. Thompson   +3 more
doaj   +1 more source

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