Zobrazeno 1 - 10
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pro vyhledávání: '"James N. Blake"'
Autor:
James N Blake
Publikováno v:
International Journal of E-Politics. 10:49-60
Immigration is a highly politicised and emotive area of public discourse. During the peak of the so-called ‘Refugee Crisis' in Europe, a number of EU politicians and mass media outlets manipulated the abstract idea of ‘the migrant' as a scapegoat
Publikováno v:
Fiber and Integrated Optics. 32:173-186
When light generated by a multimode laser diode travels through a wave-length-sensitive element, such as an unbalanced interferometer, the mode partition noise might be converted into intensity noise, significantly increasing the intensity of the tot
Publikováno v:
Journal of Lightwave Technology. 18:2146-2150
The signal-to-noise ratio (SNR) of fiber-optic gyroscopes (FOGs) is directly impacted by the optical power coupled to the interferometric circuit. The optical intensity noise produced by the optical broadband source becomes the major component of the
Publikováno v:
Journal of Lightwave Technology. 16:1212-1219
We analyze scale factor errors associated with integrating imperfect quarter-waveplates into loop and in-line Sagnac interferometer fiber-optic current sensors. We show that relatively large imperfections in the quarter-waveplates can be tolerated in
Publikováno v:
Journal of Lightwave Technology. 16:1844-1850
This paper presents theoretical and experimental results showing the effects of linear and circular birefringence on the sensing coil of an in-line Sagnac interferometer current sensor. Linear birefringence induces local scale factor variations along
Publikováno v:
Optical Fiber Technology. 2:201-206
We present very simple expressions for scaling the well-known first- and second-order modes dispersion curves of circular core fibers in order to predict the propagation characteristics of symmetric waveguides with rectangular or elliptical cores. Th
Publikováno v:
IEEE Transactions on Power Delivery. 11:1702-1706
This paper presents experimental results comparing the susceptibility of two different optical fiber current sensors to environmental acoustic vibrations. Of the two sensors that are tested, one employs a uni-directional current detection scheme, and
Publikováno v:
IEEE Transactions on Power Delivery. 11:116-121
The authors demonstrate for the first time a near shot noise limited in-line Sagnac interferometer current sensor. It is shown to have a number of advantages over the optical current sensors based on polarimetric Faraday and Faraday/Sagnac loop inter
Autor:
R. T. de Carvalho, James N. Blake
Publikováno v:
Journal of Lightwave Technology. 13:1250-1255
We show the Sagnac interferometer as a two-parameter sensing device where nonreciprocal and reciprocal effects can be independently and simultaneously monitored. Phase shifts induced by nonreciprocal effects affect differently the counterpropagating
Autor:
James N. Blake, Bogdan Szafraniec
Publikováno v:
Journal of Lightwave Technology. 12:1679-1684
Polarization modulation errors in all-fiber depolarized gyros having imperfect depolarization are examined. As in the case of PM fiber gyros, birefringence modulation is shown to give rise to quadrature errors. In addition, we demonstrate the existen