In the 1920’s John Logie Baird obtained a patent for using arrays of transparent rods to transmit images for television, while Clarence W. Hansell used the same configuration to create facsimiles. During 1930, Heinrich Lamm successfully transmitted and images through a bundle of fiber distribution box .

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The image was of a light bulb filament. Lamm intended to use this system to look inside the human body, however with the shift in power during World War II, he was forced to abandon his work and seek asylum in America. He made an effort to file a patent but was denied because of Hansell’s British Patent.

Danish physicist Holger Moeller, applied for a patent in 1951 for fiber-optic imaging. He proposed coating glass or plastic fibers with a low index material. His patent was denied because of Baird and Hansel’s patents.

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Three years later Abraham Van Heel and Harold H. Hopkins debuted imaging bundles at two different times in the British journal Nature. Later, Van Heel produced a Fiber Distribution Hub ; it showed a great reduction in signal interference and issues between fibers, like crosstalk. At Columbia University, in 1954, Charles Townes and his colleagues developed ‘maser’. Maser stands for “microwave amplification by stimulated emission of radiation”.