Results 31 to 40 of about 3,322,116 (291)

Linearization techniques to suppress optical nonlinearity [PDF]

open access: yes, 2009
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis is shown the implementation of the linearization techniques such as feedforward and pre-distortion feedback linearization to suppress the ...
Tabatabai, Farbod
core   +7 more sources

OPTICAL TRANSISTORS WITH NEGATIVE FEEDBACK

open access: yesLe Journal de Physique Colloques, 1988
We consider a Fabry-Perot filled with a nonlinear medium. The transmitted (It) and reflected (Ir) intensities are related to the holding or input beam intensity Ih by the Airy formulae: It is assumed that the angle of incidence is sufficiently small (i.e., near normal incidence) to neglect the angular dependence in the Airy function.
Mandel, Paul, Smith, S. D.
openaire   +3 more sources

Experimental and Numerical Study of Locking of Low-Frequency Fluctuations of a Semiconductor Laser with Optical Feedback

open access: yesPhotonics, 2022
We study the output of a semiconductor laser with optical feedback operated in the low-frequency fluctuations (LFFs) regime and subject to weak sinusoidal current modulation.
Jordi Tiana-Alsina, Cristina Masoller
doaj   +1 more source

Regulating the Single-Mode Lasing Intensity of Semiconductor Lasers Without Wavelength Shift

open access: yesIEEE Photonics Journal, 2020
A simple method to regulate the single-mode lasing intensity of semiconductor lasers without wavelength shift is demonstrated in this paper. The basic component is a digital micro-mirror device (DMD), which can be taken as an adjustable two-dimensional ...
Yang Wang, Xiaoyan Wu
doaj   +1 more source

Longitudinal spatial characterisation of optical fibre erbium distributed feedback laser under the motion of steady magnetic field [PDF]

open access: yes, 2014
The spatial sensitivity of an erbium doped optical fibre distributed feedback (DFB) laser to an external magnetic field is reported. Intrinsic birefringence of the laser cavity allows lasing in two orthogonal modes.
Yao, Yuan, Flockhart, Gordon M. H.
core   +4 more sources

Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) [PDF]

open access: yes, 2006
A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus   +9 more
core   +1 more source

Using a GPS-Aided Inertial System for Coarse-Pointing of Free-Space Optical Communication Terminals [PDF]

open access: yes, 2006
In the Capanina project, it has been shown that it is possible to use solely GPS positions for coarse-pointing of a stratospheric free-space optical communication terminal.
Bernhard Epple, Epple, Bernhard
core   +1 more source

Theory of backward distributed-feedback optical parametric amplifiers and oscillators [PDF]

open access: yes, 2012
[[abstract]]We derive a coupled-wave theory for backward phase-matched optical parametric amplifiers and oscillators in a dielectric modulated nonlinear optical material.
Huang YC
core   +1 more source

A high-speed optical star network using TDMA and all-optical demultiplexing techniques [PDF]

open access: yes, 1996
The authors demonstrate the use of time-division multiplexing (TDM) to realize a high capacity optical star network. The fundamental element of the demonstration network is a 10 ps, wavelength tunable, low jitter, pulse source. Electrical data is encoded
Remi Boittin   +8 more
core   +2 more sources

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays [PDF]

open access: yes, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll   +13 more
core   +1 more source

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