US Patent 7508851 Clock transfer device
Patent 7508851 was granted and assigned to National Institute of Advanced Industrial Science and Technology on March, 2009 by the United States Patent and Trademark Office.
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A clock transfer device is designed to perform long-distance transfer of a reference clock, which is generated based on a high-precision frequency standard, toward a remote place. The clock transfer device includes a first mode-locked laser for generating a first optical pulse train having a first repetition frequency and a first wavelength, and a second mode-locked laser for generating a second optical pulse train having a second repetition frequency and a second wavelength. The first optical pulse train is introduced into a resonator of the second mode-locked laser via a wavelength multiplexing coupler so that the second repetition frequency is passively synchronized with the first repetition frequency; then, the second optical pulse train is transmitted via a single mode fiber.
US Patent 07508851 Clock transfer device US Patent 7508851 Clock transfer device
US Patent 07508851 Clock transfer device
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