This is the source of the optical pulse which can be seen from Earth.

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The bottom line is that while you might not ever have heard of Fabrinet, the company plays a key role in the optical networking sector, as a sole source provider of many components.

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The advantage of the rival NTT technique, says Saruwatari Masatoshi, a senior researcher at the company's Optical Network Systems Laboratories, is that it uses only a single light source.

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