Results 271 to 280 of about 889,937 (338)
Some of the next articles are maybe not open access.
Chromatic dispersion of the ocular media
Vision Research, 1982Measurements of chromatic dispersion of aqueous and vitreous humors, cornea and lens of the eye are sparse and incomplete. The wavelength variation in refractive index of the ocular media of cow, pig, frog (Rana pipiens), chicken, rock bass (Ambloplites rupestris), albino rat and cat as well as human lenses was determined by means of Abbe and Pulfrich ...
J G, Sivak, T, Mandelman
openaire +2 more sources
Chromostereopsis and Chromatic Dispersion
Optometry and Vision Science, 1986Slits placed before the eyes measured the chromatic dispersion of the eyes as a function of the separation of the slits. Prisms in front of the eyes determined the separation of the visual and null axes. The product of these separate measurements predicted the apparent depth expected with full-pupil stereoscopy.
openaire +2 more sources
Chromatically dispersed interferometry with wavelet analysis
Optics Letters, 2006A new white-light interferometry point sensor utilizing a chromatically dispersed depth detection field is addressed. Monitoring the interference in the optical frequency domain allows for microscopic height detection without the necessity of a mechanical axial scan.
Evangelos, Papastathopoulos +2 more
openaire +2 more sources
Chromatic dispersion in nonlinear optical waveguides
Microwave and Optical Technology Letters, 1989AbstractCompound chromatic dispersion has been calculated for waveguides with nonlinear substrate made of heavy metal oxide and fluoride glasses. Negative dispersion was found in a single‐mode regime for those guides. Crossover value of wavelength is waveguide power‐dependent.
Wartak, M.S., Chrostowski, J.
openaire +2 more sources
Transmission gratings for chromatic dispersion compensation
Optics Letters, 1996It is theoretically demonstrated that a succession of four unchirped gratings, ~20 mm long, induces a negative chromatic dispersion in transmission of -100 ps/nm over a 0.2-nm bandwidth, with a power loss below 1 dB. The stability of the proposed arrangement is also considered and found to be within today's technology.
B, Gisin, N, Gisin, F, Cochet
openaire +2 more sources
The chromatic dispersion module with large chromatic focal shift
2012 7th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), 2012This paper integrates micro-lenses to develop a miniature chromatic dispersion module with 1.89 mm (400–800 nm) chromatic focal shift for the application of the profile and roughness detection of roll to roll process. The dimension of the designed and fabricated lens module is about 6 mm (long) × 2 mm (diameter) which is far smaller to the commercial ...
M. C. Wei +3 more
openaire +1 more source
Frequency Domain Chromatic Dispersion Estimation
National Fiber Optic Engineers Conference, 2010The low complexity, robust, and precise algorithm solely employs a simplified autocorrelation function of the signal spectrum for blind chromatic dispersion estimation to adapt frequency domain compensation functions in digital coherent receivers.
F.N. Hauske +5 more
openaire +1 more source
Chromatic dispersion measurement in optical fibers using optoelectronic oscillations
Optics and Laser Technology, 2019In this paper, a novel technique is introduced that enables the measurement of chromatic dispersion (CD) in optical fibers. This technique is based on a relatively low-frequency optoelectronic oscillation (OEO) to provide a fast, precise and a relatively
O. Terra
semanticscholar +1 more source
Optics Letters, 2019
A photonic approach to realizing anti-chromatic dispersion transmission for a frequency and bandwidth-doubling dual-chirp microwave waveform is proposed and experimentally demonstrated.
Kun Zhang +6 more
semanticscholar +1 more source
A photonic approach to realizing anti-chromatic dispersion transmission for a frequency and bandwidth-doubling dual-chirp microwave waveform is proposed and experimentally demonstrated.
Kun Zhang +6 more
semanticscholar +1 more source
Improved chromatic dispersion monitoring technique
Optics Communications, 2006We consider and investigate an improved chromatic dispersion monitoring method using two RF tones with an inserted dispersion offset. This improved technique can be used to monitor both the positive and negative accumulated dispersion caused by optical fibers as well as other optical components in optical networks.
Ning Liu +4 more
openaire +1 more source