Noise performance optimization of time and frequency dissemination system in presence of fiber mechanical vibrations

Kołodziej, Jacek; Krehlik, P.; Śliwczyński, Ł.; Słowik, Wojciech; Kalabiński, Paweł

doi:10.1109/eftf.2014.7331503

Cited by 1 publication

(3 citation statements)

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“…When the loop (DLL) is locked, the system tracks and stabilizes the time delay between the Local Module input and the Remote Module output. The primary task of the system was to compensate the thermal fluctuation of time delay in the fiber, but − by the way − the loop compensates also the low-frequency noise generated in the fiber [8,10].…”

Section: Tests With the Tandf Transfer System Tfts-2mentioning

confidence: 99%

“…The effectiveness of suppression for configuration "B", where the stretcher is close to Local Module, is about 6 dB better than for configuration "A", where the stretcher is close to Remote Module. This phenomenon can be explained by the DLL theory [10]. The transmittance of the loop for the Brought to you by | MIT Libraries Authenticated Download Date | 5/9/18 2:07 PM corrupting signal depends on the location of the corrupting source.…”

Section: Tests With the Tandf Transfer System Tfts-2mentioning

confidence: 99%

“…As a coarse tool analytical modeling [10] may be used, but the final verification requires the hardware measurement.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Testing Time and Frequency Fiber-Optic Link Transfer by Hardware Emulation of Acoustic-Band Optical Noise

Lipiński

Krehlik

Śliwczyński

et al. 2016

Metrology and Measurement Systems

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The low-frequency optical-signal phase noise induced by mechanical vibration of the base occurs in field-deployed fibers. Typical telecommunication data transfer is insensitive to this type of noise but the phenomenon may influence links dedicated to precise Time and Frequency (T&F) fiber-optic transfer that exploit the idea of stabilization of phase or propagation delay of the link. To measure effectiveness of suppression of acoustic noise in such a link, a dedicated measurement setup is necessary. The setup should enable to introduce a low-frequency phase corruption to the optical signal in a controllable way. In the paper, a concept of a setup in which the mechanically induced acoustic-band optical signal phase corruption is described and its own features and measured parameters are presented. Next, the experimental measurement results of the T&F transfer TFTS-2 system's immunity as a function of the fibre-optic length vs. the acoustic-band noise are presented. Then, the dependency of the system immunity on the location of a noise source along the link is also pointed out.

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Section: Tests With the Tandf Transfer System Tfts-2mentioning

confidence: 99%

Section: Tests With the Tandf Transfer System Tfts-2mentioning

confidence: 99%