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Optical time domain reflectometry in a single-mode fiber

1981; IEEE Photonics Society; Volume: 17; Issue: 6 Linguagem: Inglês

10.1109/jqe.1981.1071237

1558-1713

K. Aoyama, K. Nakagawa, Toshihiro Itoh,

Optical Network Technologies

This paper describes the theoretical and experimental study of an optical time domain reflectometry (OTDR) in a single-mode fiber. The maximum measurable distance by the OTDR is theoretically studied. In the experiment, the cylindrical lens attached to the laser diode, the low-loss and low-crosstalk directional coupler, and the digital averaging technique combined enabled us to measure a break in a single-mode fiber up to 17 km in length. This paper also describes the application of the OTDR to loss measurement of a single-mode fiber.