Mode Coupling and Phase Modulation in Vibrating Waveguides

Peter J. Kajenski; Peter L. Fuhr; D. R. Huston

doi:10.1109/50.156882

Mode Coupling and Phase Modulation in Vibrating Waveguides

Peter J. Kajenski, Peter L. Fuhr, D. R. Huston

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

When coherent light is coupled into a multimode waveguide (such as a fiber), a speckle pattern is formed at the fiber output. When the fiber is vibrated, the speckle pattern is modulated due to mode coupling and phase modulation of the waveguide modes. In this paper it is shown that when a highly coherent light source is used, the speckle pattern modulation is due primarily to phase modulation of the modes. When less coherent sources are used (such as low-cost laser diodes), mode coupling is the dominant effect.

Original language	English
Pages (from-to)	1297-1301
Number of pages	5
Journal	Journal of Lightwave Technology
Volume	10
Issue number	9
DOIs	https://doi.org/10.1109/50.156882
State	Published - Sep 1992
Externally published	Yes

Funding

was supported in part by the National Science Foundation under Grant BCS- 9024390 and the Air Force Astronautics (Phillips) Laboratory. The authors are with the Electrical Engineering Department, University of Vermont, Burlington, VT 05405. IEEE Log Number 9201793.

Funders	Funder number
Air Force Astronautics
National Science Foundation	BCS- 9024390

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10.1109/50.156882

Cite this

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Mode Coupling and Phase Modulation in Vibrating Waveguides

Abstract

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