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1 October 1968 Mode Discrimination Of Optical Waveguides By Spatial Filtering
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Proceedings Volume 0014, Fiber Optics I; (1968) https://doi.org/10.1117/12.965342
Event: Fiber Optics, 1968, Baltimore, United States
Abstract
In order to excite only a desired mode, it is sufficient to generate an electro-magnetic field whose transverse components on the end of the fiber match those of the mode. A technique which approximately satisfies this condition is suggested. The results of experiments which involve the use of spatial filtering techniques in the pupil of a launching lens are shown. A method for determining the relative power in each of several modes at the output end of a waveguide will also be presented. It is a vectorial spatial filtering technique, based on the orthogonality of the mode fields. Experimental results confirm the applicability of the method to the one case tested, that of a large diameter optical fiber of low numerical aperture.
© (1968) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. Sawatari, N. S. Kapany, and J. J. Burke "Mode Discrimination Of Optical Waveguides By Spatial Filtering", Proc. SPIE 0014, Fiber Optics I, (1 October 1968); https://doi.org/10.1117/12.965342
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