Installation for measuring the absolute and differential delay of signal propagation in optical fiber

Hairetdinova V.M., Kolmogorov O.V., Lubchenko D.A.

For Russian citation (Opticheskii Zhurnal):

Хайретдинова В.М., Колмогоров О.В., Любченко Д.А. Установка для измерений абсолютной и дифференциальной задержки распространения сигнала в оптическом волокне // Оптический журнал. 2024. Т. 91. № 4. С. 93–101. http://doi.org/10.17586/1023-5086-2024-91-04-93-101

Khayretdinova V.M., Kolmogorov O.V., Lyubchenko D.A. Installation for measuring the absolute and differential delay of signal propagation in optical fiber [In Russian] // Opticheskii Zhurnal. 2024. V. 91. № 4. P. 93–101. http://doi.org/10.17586/1023-5086-2024-91-04-93-101

For citation (Journal of Optical Technology):

Abstract:

The subject of the study is installation for measuring the absolute and differential delay of signal propagation in optical fiber, and factors affecting the installation error. The aim of study is to develop the installation for measuring the absolute and differential delay of signal propagation in optical fiber, which, unlike the existing installations, will allow to measure the signal propagation delays in optical fibers with picosecond resolution at specified wavelengths, as well as to investigate the dispersion properties of optical fiber coils and other fiber-optic devices. Method. The developed installation is based on the use of a phase-shift method of measuring the chromatic dispersion in optical fiber. Main results. The installation for measuring the absolute and differential delay of signal propagation in optical fiber has been developed. The spectral range of the installation is from 1500 to 1630 nm. The main factors affecting the accuracy of differential delay measurements using the developed installation are determined, estimates of the error limits of the installation depending on the frequencies of the modulating signals are obtained. Practical significance. The developed measuring installation can be used for research of optical fibers and fiber-optic devices in the development of systems for comparing and synchronizing time scales, systems for transmitting reference time and frequency signals and other equipment of fiber-optic communication lines.

Keywords:

optical fiber, signal propagation delay, differential delay, chromatic dispersion, time scale comparison systems

OCIS codes: 060.2400, 060.2430, 060.2270

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