Showing papers on "Fiber Bragg grating published in 1974"
Patent•
19 Aug 1974
TL;DR: In this paper, the optical fiber is positioned carefully with respect to some predetermined external surface on a stationary holder such that the optical fibre may be later precisely located through use of that surface.
Abstract: A method is described for positioning an optical fiber. The method takes two general forms: (1) The optical fiber is positioned carefully with respect to some predetermined external surface on a stationary holder such that the optical fiber may be later precisely located through use of that surface; and (2) Precisely orienting one or more optical fibers which have been prepositioned with respect to an article such that that article may be similarly precisely oriented. Generally, the methods involve the passing of light through the optical fiber, detecting the output therefrom through the use of a position-sensitive photodetector, and moving the optical fiber so as to achieve a desired relationship to the position-sensitive photodetector.
59 citations
TL;DR: In this article, an active microwave system for continuous and contactless measurement of the diameter or basic weight of a low-loss continuous dielectric fiber is described, where the frequency of oscillation of a Gunn-diode oscillator is a measure of diameter passing through the oscillator cavity.
Abstract: An active microwave system for continuous and contactless measurement of the diameter or basic weight of a low-loss continuous dielectric fiber is described The frequency of oscillation of a Gunn-diode oscillator is a measure of the diameter of the dielectric fiber passing through the oscillator cavity Some experimental results are presented and limitations of the method discussed
4 citations
TL;DR: In this paper, the optimal parameters of the optical fiber, corresponding to the maximum narrowing of the pulse, are determined, and the distortion of a pulse generated by such a laser and traveling in an optical fiber characterized by frequency dispersion is calculated.
Abstract: Frequency modulation of the optical carrier, due to heating a p-n junction, is a characteristic feature of the injection laser radiation. This feature is allowed for in a calculation of the distortion of a pulse generated by such a laser and traveling in an optical fiber characterized by frequency dispersion. The optimal parameters of the fiber, corresponding to the maximum narrowing of the pulse, are determined.