Results 221 to 230 of about 4,434,198 (281)

Achieving a Mode-Selective Optical Waveguide in a PIN-PMN-PT Single Crystal via a Nickel In-Diffusion Method. [PDF]

Nanomaterials (Basel)
Zhang Y, Hu Q, Liu X, Zhuang Y, Zhang B, Yang W, Gao L, Liu Z, Zhang Y, Huang W, Feng Y, An L, Xu Z, Wei X.   +13 more
europepmc   +1 more source

Intrinsically Disordered Polypeptides-Based Stealth Materials Enable Enhanced Photothermal Cancer Therapy Using an In Situ Fiber-Based Penetrating Laser System. [PDF]

Small Sci
Nishida K, Yamashita H, Takahashi A, Miyako E.   +3 more
europepmc   +1 more source

Dietary American Cockroach (<i>Periplaneta americana</i>) Residue in Juvenile Black Carp (<i>Mylopharyngodon piceus</i>): Effects on Growth, Antioxidant Status, Metabolism, and Whole-Body Amino Acid Profile. [PDF]

Animals (Basel)
Pu W, Wu Y, Zhang C, Hu T, Shao Z, Gao J, Pu L, Chu W, Long X.   +8 more
europepmc   +1 more source

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Light propagation in graded-index optical fibers

Applied Optics, 1978
An accurate numerical method is described for solving the Helmholtz equation for a general class of optical fibers. The method yields detailed information about the spatial and angular properties of the propagating beam as well as the modal propagation constants for the fiber.
J A Fleck, M D Feit
exaly   +3 more sources

Pulse broadening in graded-index optical fibers

Applied Optics, 1976
This paper reports on some theoretical and experimental investigations of the radial refractive index gradient that maximizes the information-carrying capacity of a multimode optical waveguide. The primary difference between this work and previous studies is that the dispersive nature of core and cladding materials is taken into consideration.
R Olshansky
exaly   +3 more sources

Leaky modes in graded index optical fibers

Applied Optics, 1976
Leaky mode attenuation coefficients for graded index optical fibers are derived using the WKB approximation. For the case of a parabolic index profile, the attenuation coefficients for explicitly evaluated and used to calculate the leaky mode contribution to near field and attenuation measurements.
R Olshansky
exaly   +3 more sources

Mode Coupling Effects in Graded-Index Optical Fibers

Applied Optics, 1975
Mode coupling theory is applied to the study of multimode optical fibers with graded-index cores. For coupling caused by random bends in the waveguide axis, the results predict the dependence of the induced losses on the fiber's characteristics. The impulse response is determined for fibers with random bends having several different power spectra.
R Olshansky
exaly   +3 more sources

Selective mode excitation of graded index optical fibers

Applied Optics, 1978
A method is described permitting excitation of a small number of modes in graded index fibers, the order of the launched mode being easily varied and determined. Using this launching technique, it is possible to determine the index profile and index difference of graded core fibers; results are compared with those obtained by other techniques.
L Jeunhomme
exaly   +3 more sources

Frequency characteristics of graded-index fibers

Applied Optics, 1980
Frequency response of graded-index multimode fibers, whose index profile parameter alpha deviates from the optimum value, is investigated both theoretically and experimentally. The frequency response of the fiber with optimum alpha diverges periodically.
M, Tateda, S, Seikai, N, Uchida
openaire   +2 more sources

Baseband frequency response of a graded-index fiber excited by a step-index fiber

Applied Optics, 1980
Input modal power distribution and baseband frequency response of a graded-index fiber have been investigated theoretically and experimentally, when the fiber was excited by a step-index fiber. It is found that the bandwidth of the graded-index fiber is measured with good reproducibility and accuracy by using the step-index fiber as an exciter.
T, Horiguchi, T, Tanifuji, M, Tokuda
openaire   +2 more sources