Fast Characterization of Dispersion and Dispersion Slope of Optical Fiber Links using Spectral Interferometry with Frequency Combs [PDF]
, 2009 We demonstrate fast characterization (~1.4 microseconds) of both the dispersion and dispersion slope of long optical fiber links (~25 km) using dual quadrature spectral interferometry with an optical frequency comb.
Leaird, Daniel E. +3 more
core +1 more source
Research on Nanometer Precision Measurement Method of High Order Even Aspheres
Applied SciencesOptical aspheres are demanded with extremely high precision to meet functional requirements in space telescopes, extreme ultraviolet lithography, and other modern large optical systems.
Hao Xu, Junfeng Liu, Shanyong Chen
doaj +1 more source
Minimizing the residual topography effect on interferograms to improve DInSAR results: estimating land subsidence in Port-Said City, Egypt [PDF]
, 2017 The accurate detection of land subsidence rates in urban areas is important to identify damage-prone areas and provide decision-makers with useful information.
Darwish, Noura +2 more
core +2 more sources
Prospect for Measuring Lunar Tidal Deformation and Displacement Love Numbers With Earth-Based Radar
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingLunar tidal deformation (LTD), characterized by the vertical (${{{\bm{h}}}_2}$) and horizontal (${{{\bm{l}}}_2}$) displacement Love numbers, is a key to deciphering the interior structure of the Moon.
Gen Li +5 more
doaj +1 more source
, 2017 Matter-wave interferometry is a direct test of the quantum superposition principle for massive systems, and of collapse models. Here we show that the bounds placed by matter-wave interferometry depend weakly on the details of the collapse mechanism ...
Bassi, Angelo +2 more
core +1 more source
Harmonically-related diffraction gratings-based interferometer for quadrature phase measurements [PDF]
, 2006 We demonstrate the use of shallow diffraction gratings for quadrature phase interferometry. A single shallow diffraction grating-based Michelson interferometer yields only trivial (0° or 180°) phase shift between different output ports.
Cui, Xiquan +4 more
core +1 more source
Portable fiber optic coupled Doppler interferometer system for detonation and shock wave diagnostics [PDF]
, 1993 Testing and analysis of shock wave characteristics such as detonators and ground shock propagation frequently require a method of measuring velocity and displacement of the surface of interest. One method of measurement is Doppler interferometry.
Fleming, Kevin J.
core +1 more source
Noise assisted Ramsey interferometry
, 2013 I analyze a metrological strategy for improving the precision of frequency estimation via Ramsey interferometry with strings of atoms in the presence of correlated dephasing.
Dorner, U.
core +1 more source
Software-Defined Optical Coherence Measurement of Seawater Refractive Index Variations
SensorsThe seawater refractive index is an important parameter in marine environments, with its variations depending on the specific environmental conditions. During practical applications, modulation parameters such as the sampling rate, bandwidth, and filters
Jiaxin Zhao +6 more
doaj +1 more source