Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 24 March 2021Accepted: 30 June 2021Published online: 25 October 2021Keywordsinverse source problem, static current density, hybrid inverse ultrasound modulated EEG, partial dataAMS Subject Headings35R30, 35Q60, 78A46Publication DataISSN (online): 1936-4954Publisher: Socie...

In this paper, we describe optical component and device technologies we have developed for next-generation photonic networks that achieve high tunability, high-speed transmission, and low power consumption. These include three-dimensional optical MEMS switches, acousto-opic tunable filters (AOTFs), lithium niobate optical modula-tors, and semiconductor lasers and optical amplifiers.

Design/methodology/approach – Two tests were performed, one on Acoustic Emission artificial signals generated on a CFRP plate and one on an Acousto Ultrasonic setup used for actively detecting impact damage. The waveforms were represented using a data reduction technique based on the Daubechies wavelet and an image processing technique using Chebyshev moments approximation, to get 32 descriptor...

This Letter presents a measurement of the spectral content of frequency shifted pulses generated by a lightwave synthesized frequency sweeper. We found that each pulse is shifted in frequency with very high accuracy. We also discovered that noise originating from light leaking through the acousto- optical modulators and forward propagating Brillouin scattering appear in the spectrum.

In this paper we described a structure of an original multiwavelength optical fiber source for DWDM systems. In order to obtain a several dozen of optical carriers with highly stable channel spacing of 4.5GHz a single laser source and acousto optic frequency shifter were used. Results of the analysis of the structure properties were presented. Key-Words: DWDM, EDFA, multiwavelength