There is a category of invention that becomes so completely absorbed into the infrastructure of daily life that almost nobody who benefits from it could name the person who made it work. Fibre optics is one of the purer examples: the fine glass thread that now carries most of the world's internet traffic, telephone calls and medical endoscopy images began as a doctoral student's stubborn insistence that light could be made to bend where the physics of the day said it should simply leak away. The student was Narinder Singh Kapany, born in Moga, Punjab, and he spent the rest of his very long career being called, more or less by consensus, the father of a field that somehow never got around to giving him its Nobel Prize.
Moga to South Kensington
Kapany was born on 31 October 1926 in Moga and largely raised in Dehradun. He took his first degree at Agra University in 1948, then travelled to London and enrolled at Imperial College, where in 1952 he began doctoral research under the physicist Harold Hopkins. Hopkins had been asked to improve the flexible endoscope, then a crude and awkward instrument, and the two men set about testing whether a tightly packed bundle of extremely thin glass fibres — each fibre carrying one point of an image, the way a single tile carries one colour of a mosaic — could transmit a coherent picture around a bend.
Physicists of the period were sceptical that light could be guided this way with acceptable loss. Kapany and Hopkins assembled bundles of ten to twenty thousand fibres, each roughly a thousandth of an inch across, and on 2 January 1954 published their results in Nature under the title "A Flexible Fibrescope, Using Static Scanning": image transmission through a fibre bundle some seventy-five centimetres long, with far less signal loss than any earlier attempt. It was not yet the internet backbone or the long-distance telephone trunk; those required a later discovery, by Charles Kao, about the glass impurities that were still limiting how far a signal could travel. But it was the demonstration that made the rest of the field thinkable, and it is the reason this article treats 1954, not the catchier 1960 naming that followed, as Kapany's watershed year — the harder, less quotable achievement of actually making the thing work.
Naming the Field
Kapany finished his PhD in 1955 and, after a period as a research scientist in the United States, coined the term "fiber optics" itself in a November 1960 article for Scientific American — the piece that introduced the phrase, and much of the underlying science, to a general readership for the first time. The same year he founded Optics Technology, Inc. in Palo Alto, one of the earliest optics companies in what had not yet been nicknamed Silicon Valley, and took it public in 1967, reportedly the first Sikh Indian to do so in the region. A second company, Kaptron, followed in the 1970s, developing components for long-distance fibre transmission. Across his career he accumulated more than a hundred patents, spanning fibre-optic communications, lasers, biomedical instrumentation and solar energy, and he taught at UC Berkeley, UC Santa Cruz and Stanford along the way. In 1999, Fortune magazine named him one of seven "Unsung Heroes" of twentieth-century American business — a title that, read against what came next, turned out to be more apt than flattering.
The Prize That Went Elsewhere
In 2009 the Nobel Prize in Physics finally recognised fibre optics, awarding half of it to Charles Kao for his 1960s work identifying — and largely solving — the glass-purity problem that had kept fibre transmission short-range. Kapany, whose 1954 paper with Hopkins had opened the field Kao's work later made practical at scale, was left off the citation entirely. The decision drew open criticism from scientists and science journalists who considered his contribution foundational rather than incidental. Kapany's own reaction, characteristically, avoided both bitterness and false modesty: "It is up to the Swedish Academy to decide," he said. "They have used whatever criteria they wanted to use." He went on calling himself, without much visible rancour, the father of fiber optics — a title the Nobel committee never conferred and the rest of the world never seriously withheld.
Beyond the Laboratory
Kapany's second career, in a sense, was philanthropy directed at his own community. He co-founded the Sikh Foundation in 1967, assembled and donated a significant collection of Sikh art now held partly at the Asian Art Museum in San Francisco, and endowed chairs in Sikh Studies at the University of California, Santa Barbara and elsewhere — institutional homes for a field of scholarship that, in North America, had barely existed before he funded it. He died on 3 December 2020 in Redwood City, California, at 94, and was awarded India's Padma Vibhushan posthumously the following year. His memoir carried the title this article borrows for its own: The Man Who Bent Light — a fair enough description of a career spent proving that a fixed rule of physics was more negotiable than anyone had assumed.