Results 11 to 20 of about 3,041,315 (395)

Optimization of optical data transmitters for 40-Gb/s lightwave systems using frequency resolved optical gating [PDF]

open access: yesIEEE Photonics Technology Letters, 2002
The measurement technique of frequency resolved optical gating has been used to optimize the phase of a 40-GHz train of optical pulses generated using a continuous-wave laser gated with an external modulator. This technique will be vital for optimization
Liam P Barry   +2 more
exaly   +3 more sources

Colourless adaptively modulated optical OFDM transmitters using SOAs as intensity modulators.

open access: yesOptics Express, 2009
The wavelength dependent transmission performance of adaptively modulated optical OFDM (AMOOFDM) signals is investigated, for the first time, over optical amplification- and chromatic dispersion compensation-free IMDD SMF systems using semiconductor ...
J. L. Wei   +3 more
semanticscholar   +2 more sources

Study of Electrical and Optical Peaking of Si Ring Modulators for Tailoring Modulation Band

open access: yesIEEE Photonics Journal, 2023
An operation scheme using electrical peaking and optical peaking to engineer the modulation band of a Si microring modulator is presented. By incorporating an inductor design at the metal traces of a Si microring modulator, the driving signal can be ...
Hsiang-Chih Kao   +2 more
doaj   +1 more source

Comparison of Fabrication Methods for Fiber‐Optic Ultrasound Transmitters Using Candle‐Soot Nanoparticles

open access: yesAdvanced Materials Interfaces, 2023
Candle‐soot nanoparticles (CSNPs) have shown great promise for fabricating optical ultrasound (OpUS) transmitters. They have a facile, inexpensive synthesis whilst their unique, porous structure enables a fast heat diffusion rate which aids high ...
Semyon Bodian   +14 more
doaj   +1 more source

Real-Time Underwater Wireless Optical Communication System Based on LEDs and Estimation of Maximum Communication Distance

open access: yesSensors, 2023
This paper presents a real-time underwater wireless optical communication (UWOC) system. The transmitter of our UWOC system is equipped with four blue LEDs, and we have implemented pre-emphasis technology to extend the modulation bandwidth of these LEDs.
Minglun Zhang, Hongyu Zhou
doaj   +1 more source

Experimental Evaluation of Indoor Optical Wireless MIMO Systems With Square and Linear Array Constellations

open access: yesIEEE Photonics Journal, 2021
In this article, we investigate the performance of the newly designed 4 × 4 optical wireless multiple-input-multiple-output (MIMO-OWC) system based on a linearly-shaped arrangement of transmitters and receivers, to achieve long-distance and high ...
Tetsuya Nakamura   +4 more
doaj   +1 more source

Improved Power Budget of 112 Gb/s/$\lambda$ Intra-Datacentre Links Using a Split-Carrier Transmitter Architecture

open access: yesIEEE Photonics Journal, 2019
A split-carrier transmitter is proposed to improve loss budget for short distance 100 G-per-wavelength intra-datacentre links. By applying a low-complexity hardware modification to the transmitter, the proposed architecture reduces transmitter ...
Thomas Gerard   +6 more
doaj   +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

Classical benchmarking for microwave quantum illumination

open access: yesIET Quantum Communication, 2021
Quantum illumination theoretically promises up to a 6 dB error‐exponent advantage in target detection over the best classical protocol. The advantage is maximised by a regime that includes a very high background, which occurs naturally when one considers
Athena Karsa, Stefano Pirandola
doaj   +1 more source

Semiconductor Multimaterial Optical Fibers for Biomedical Applications

open access: yesBiosensors, 2022
Integrated sensors and transmitters of a wide variety of human physiological indicators have recently emerged in the form of multimaterial optical fibers.
Lingyu Shen   +5 more
doaj   +1 more source

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