Journal ArticleDOI
Observation of externally controlled mode coupling in optical waveguides
D.B. Keck
- Vol. 62, Iss: 5, pp 649-650
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TLDR
In this paper, an externally controlled mode coupling was observed in a 0.7-km optical waveguide fiber resulting in a significant pulse narrowing, and the method of mode coupling generation requires that care be exercised in any mode coupling measurement.Abstract:
Externally controlled mode coupling was observed in a 0.7-km optical waveguide fiber resulting in a significant pulse narrowing. The method of mode coupling generation requires that care be exercised in any mode coupling measurement. Observations on a 3-km waveguide failed to show evidence of mode coupling, allowing the possibility of practical external control.read more
Citations
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Journal ArticleDOI
Mode Coupling Effects in Graded-index Optical Fibers
TL;DR: Mode coupling theory is applied to the study of multimode optical fibers with graded-index cores and the results predict the dependence of the induced losses on the fiber's characteristics.
Journal ArticleDOI
Pulse broadening in graded-index optical fibers.
Robert Olshansky,Donald B. Keck +1 more
TL;DR: Good agreement found between theory and experiment not only supports the predictions made for the value of alpha(c), but demonstrates an ability to predict pulse broadening in fibers having general index gradients.
Journal ArticleDOI
Optical-fiber packaging and its influence on fiber straightness and loss
TL;DR: The protective quality of a jacket is found to depend on a combination of stiffness and compressibility and on the fiber characteristics, which are related to dimensional variations and lateral forces considered typical for cable packaging.
Journal ArticleDOI
Change of the refractive index in an optical fiber due to external forces
TL;DR: This paper investigates experimentally the change of the refractive index, due to forces such as pulling and pure bending, in an optical fiber fabricated by the CVD technique, and finds that this phenomenon can be interpreted in terms of a simple model of the fiber, that is, a mechanically homogeneous circular rod.
References
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Journal ArticleDOI
An Optical Waveguide with the Optimum Distribution of the Refractive Index with Reference to Waveform Distortion
S. Kawakami,J. Nishizawa +1 more
TL;DR: In this article, it was shown that the group velocities of different modes can be made the same if an appropriate distribution of the refractive index in the guide is realized, and the group velocity is also independent of frequencies if the medium is dispersion free.
Journal ArticleDOI
The length dependence of pulse spreading in the CGW-Bell-10 optical fiber
TL;DR: In this paper, the authors showed that pulse broadening in the CGW-Bell-10 optical fiber showed very low dispersion ( 550 m) which is of practical significance.
Journal ArticleDOI
Self-pulsing GaAs laser for fiber-dispersion measurements
D. Gloge,E. Chinnock,T. Lee +2 more
TL;DR: In this paper, the authors describe pulse-transmission measurements in 178 m of a liquid-core fiber and explain the considerable pulse broadening (11 ns at the pulse base) in terms of mode delay and mode mixing.