Results 31 to 40 of about 1,583,518 (339)
Gain-distributed feedback filters [PDF]
Journal of Lightwave Technology, 1995 Equivalent circuits are developed for gain-distributed feedback filters. The filters can be tuned by endloading. Side-coupling of the filters to a signal waveguide results in channel-dropping filters. These active filters suppress undesired resonances more effectively than passive filters. >
H.A. Haus, M.J. Khan
openaire +1 more source
MAPbBr3 First‐Order Distributed Feedback Laser with High Stability
Advanced Photonics Research, 2023 A green‐emitting perovskite first‐order distributed feedback (DFB) laser based on the methylammonium lead bromide (MAPbBr3) with high stability is demonstrated for the first time.
Cheng Chang +3 more
doaj +1 more source
Accumulation of Distributed Phase Shift in Distributed-Feedback Resonators
IEEE Photonics Journal, 2019 Distributed-feedback waveguide lasers based on Bragg-grating resonators generate ultranarrow-linewidth emission. Oscillation at the center of the reflection band ensures maximum reflectivity, hence minimum linewidth. The required $\pi / 2$ phase shift is
Cristine Calil Kores +4 more
doaj +1 more source
Random distributed feedback fibre lasers
Physics Reports, 2014 The concept of random lasers making use of multiple scattering in amplifying disordered media to generate coherent light has attracted a great deal of attention in recent years. Here, we demonstrate a fibre laser with a mirrorless open cavity that operates via Rayleigh scattering, amplified through the Raman effect.
Sergei K. Turitsyn +5 more
openaire +2 more sources
Limited-Feedback-Based Channel-Aware Power Allocation for Linear Distributed Estimation [PDF]
, 2013 This paper investigates the problem of distributed best linear unbiased estimation (BLUE) of a random parameter at the fusion center (FC) of a wireless sensor network (WSN).
Fanaei, Mohammad +2 more
core +1 more source
Plasmonic near field transducer of nanocomposite with distributed feedback
AIP Advances, 2023 In this paper, we present a novel near field transducer (NFT) design concept for heat assisted recording. In this design, metal bars separated by thin dielectric are used to form a resonance plasmonic grating with distributed feedback (DFB).
Tianxiang Du +4 more
doaj +1 more source
Distributed Channel Quantization for Two-User Interference Networks
, 2014 We introduce conferencing-based distributed channel quantizers for two-user interference networks where interference signals are treated as noise.
Jafarkhani, Hamid +2 more
core +2 more sources
Monolithic quantum-dot distributed feedback laser array on silicon [PDF]
, 2018 Electrically-pumped lasers directly grown on silicon are key devices interfacing silicon microelectronics and photonics. We report here, for the first time, an electrically-pumped, room-temperature, continuous-wave (CW) and single-mode distributed ...
Chen, Siming +14 more
core +4 more sources
Dispersive-grating distributed feedback lasers
Optics Express, 2008 This paper proposed a novel distributed feedback (DFB) laser by incorporating a dispersive grating, whose coupling strength is dependent on the operating wavelength. Analysis of the laser threshold conditions shows that the proposed structure guarantees single-mode operation due to the inherent threshold gain discrimination on the two otherwise ...
Yanping, Xi +3 more
openaire +2 more sources
Delayed Feedback Control near Hopf Bifurcation
, 2007 The stability of functional differential equations under delayed feedback is investigated near a Hopf bifurcation. Necessary and sufficient conditions are derived for the stability of the equilibrium solution using averaging theory.
Atay, F.M. +2 more
core +4 more sources