Date of Birth: 10/31/1927
Place of birth: Could
Kapani (Kapany) Narinder Singh (b. October 31, 1927), a physicist, one of the founders of fiber optics. Born in Moge (India). In 1948 he graduated from Dehra Dun College (India) and in 1952 - Imperial College of Science and Technology in London, in 1954 received his doctorate at London University are. In 1955-57 he worked in the optical in-ones Rochersterskogo University, in 1957-61 - in the Illinois Technology Institute (Chicago), in 1961-73 - president and director of research, "Optics equipmentIn Incorporation" (Belmont), 1973 - President "Kaptron Incorporated".
Works on geometrical and physical optics, Interferential microscopy, photonics, photography, lasers, data processing. Once, when Narinder Kapani has lived in India, a teacher told him that only the reflected light travels in a straight line. Kapani took this statement as a challenge.
In 1951, Dutch scientist Abraham Van Heel and British Harold Hopkins and Narinder Kapani independently started creating glass bundles, which could transmit the image. It was necessary for a gastroscopy and other medical equipment. But if the light signal was run on an ordinary glass fiber, it will very quickly dissipate in the environment: The running beam is not reached before the end of the thread. It was reflecting the need for a glass shell plait. First van Heel did shell made of plastic, but it turned out that it absorbs too much light. Dripping and do proposed core and sheath fibers made of glass, but with different refractive indices. The core should be as transparent as possible, and the shell, in contrast, actually serve as a mirror. English scientist managed to weld glass fiber in which the loss is really lessened. The idea was great, the light transmission principle on a two-layer optical fiber operates today.
In 1956 Kapani empirically invented "fiber optics": a bundle of flexible glass rods coated with a reflective material, the image transmitted from one end to another without distortion and with minimal loss of light. Investigated transmission waveguide modes for small diameter fibers obtained an extension of the spectral characteristics of fiber optics in the infrared region of the spectrum, conducted experiments with lasers and fiber amplifiers volknami, image transmission study fiber bundles.
Member of the American Academy of Arts and Sciences.