Results 231 to 240 of about 51,329 (266)
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Experimental investigation of single-mode single-polarization optical fiber
Optics Letters, 1992An experimental study of the polarization properties of single-mode optical fibers of differential polarization-mode attenuation is presented. The output state of polarization was measured at various input polarization orientations and wavelengths. The transition from a two-polarization to a single-polarization regime of operation was investigated ...
T A, Eftimov, W J, Bock
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Phase delay of coupled modes in single-mode optical fibers
Optics Letters, 1987The phase delay of the fundamental LP(01) mode in a single-mode optical fiber is studied using periodic perturbation of the fiber axis. A large phase shift may be obtained through distortion-induced birefringence, with less than 1.5- dB coupling loss to the radiative modes.
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Mode birefringence in a single-mode elliptic optical fiber
Soviet Journal of Quantum Electronics, 1983Mode birefringence of an elliptic fiber is described by a formula valid in the case of a small ellipticity of the core and an arbitrary difference between the refractive indices of the core and cladding. This formula is derived using approximate vector solutions of the Maxwell equations for two dominant orthogonally polarized modes.
V P Kalosha, A P Khapalyuk
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Interferometry with Rayleigh backscattering in a single-mode optical fiber
Optics Letters, 1994A novel distributed sensing technique based on reflectometry is proposed. The technique uses the interference of the light waves backscattered within the resolution range of a reflectometer to detect the optical path changes in a single-mode fiber. Experimental results are presented, and practical realization of an intrusion detector that employs this ...
R, Juskaitis +3 more
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Single-Mode Fiber Optical Sensors
1987Single-mode optical fibers can be used to carry coherent light in any kind of interferometric arrangement. External action on the fiber may change the phase of the light propagating through the fiber. Fiber optical sensors employ this type of interferometry, together with sophisticated opto-electronic detection, to measure different kinds of physical ...
R. Dändliker, A. Bertholds
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Single-mode fiber-optic isolator
Integrated Optics and Optical Fiber Communication, 1981Optical isolation between the forward and back-scattered waves is essential in many optical circuits. The use of fibers as optical isolators in a fiber-optics circuit is advantageous. The present work reports on the use of single-mode fibers for optical isolation through the magnetooptic Faraday rotation of the polarization. The new method is practical
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Single-mode optical fiber antennas
SPIE Proceedings, 1990The purpose of this paper is to calculate the radiation from bent single-code optical fibers along arbitrarily oriented curved shape, which we call 'single-mode optical fiber antennas' (SMOFA). A generalized voluie current cethod (VCM) is used in order to determine the radiated power of a N-iultiturn optical fiber antenna in the fore of circular ...
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Optical fiber modulation techniques for single mode fiber sensors
1995In order to be able to implement the signal processing techniques discussed in Chapter 5 a means is required of measuring changes in one or more of the parameters describing the optical beam: amplitude, phase, direction and frequency of the light wave.
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Fluorescence profiling of single-mode optical fiber preforms
Applied Optics, 1981A new nondestructive and noncontacting method to measure accurately the refractive-index profile of single-mode optical fiber preforms is presented. The method is based on the fact that a Ge-doped preform core fluoresces strongly when excited by UV radiation.
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