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In this paper, an active phase drift cancellation scheme based on a photonic RF phase shifter for frequency transfer over optical fiber is proposed. By this scheme, a linear and stable photonic phase shifter, which is implemented with a dual parallel mach-zehnder modulator and an optical filter, is used to compensate the phase drift induced by the fiber transmission. A 1GHz reference signal transfer...
The key issues and techniques of high stability time-frequency transmission over optical fiber, such as phase noise compensation, high precision measurement of phase noise, are discussed. Recent progress at Shanghai Jiao Tong University is presented.
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