Problems that arise in the course of attempting to determine and monitor an optical fiber, the medium of transmission of fiber-optic communication systems, are considered. One of the controllable parameters is the cut-off wavelength of a single-mode optical fiber. The cut-off wavelength defines the minimal wavelength of optical radiation at which an optical fiber supports only a single propagated mode, i.e., it functions in a single-mode regime. The problem of determining the cut-off wavelength of an optical fiber used in fiber-optic communication systems is critical, since in a multi-mode regime of operation of an optical fiber its throughput decreases as a consequence of inter-mode dispersion. Methods of measuring the cut-off wavelength of an optical fiber are considered. A model of a new high-precision apparatus for measurement of the cut-off wavelength of an optical fiber is proposed. The measurements are performed on the basis of the reference bending method described in GOST R MEK 60793-1-44-2013. The precision characteristics of the newly developed apparatus are analyzed and a quantitative assessment of the measurement error is obtained.
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This work was performed with the use of the equipment of the Center for Collective Use of High-Precision Measurement Technologies in the Field of Photonics (ckp.vniiofi.ru), created on the basis of VNIIOFI and supported by the Ministry of Education and Science of Russia within the framework of Agreement No. 05.595.21.0005 (unique identifier RFMEFI59519X0005).
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Translated from Izmeritel’naya Tekhnika, No. 6, pp. 22–26, June, 2020.
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Grigoriev, V.V., Mityurev, A.K., Pogonyshev, A.O. et al. High-Precision Apparatus for Measurement of the Cut-Off Wavelength of Single-Mode Optical Fiber. Meas Tech 63, 437–442 (2020). https://doi.org/10.1007/s11018-020-01806-z
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DOI: https://doi.org/10.1007/s11018-020-01806-z