Distance scale calibration of optical fiber OTDR

Yuwen Fang; Jin Qian; Minming Wang; Xuesong Li; Tianchu Li

doi:10.1117/12.318004

6 August 1998 Distance scale calibration of optical fiber OTDR

Yuwen Fang, Jin Qian, Minming Wang, Xuesong Li, Tianchu Li

Proceedings Volume 3552, Fiber Optic Components and Optical Communication II; (1998) https://doi.org/10.1117/12.318004
Event: Photonics China '98, 1998, Beijing, China

Abstract

In this paper we present the distance scale calibration of optical fiber Optical Time Domain Reflectometers (OTDR) using the optical time-delay recirculating line approach. Particularly we demonstrate the optical modulation - phase-shift technique to measure the length of the standard fiber which formed the loop of the delay line. Two stages of modulations of 10 KHz and 1 MHz were used to achieve, step-by-step, the final optical length uncertainty of less than 0.02m+1.20 X 10-6. The length measurement results were self-checked and they are well within the quoted uncertainty. With the calibrated delay recirculating-line as a transfer standard the distance scale of the OTDRs is verified to the uncertainty of about 2 x 10-5, depending on the OTDRs’ performance.

Citation Download Citation

Yuwen Fang, Jin Qian, Minming Wang, Xuesong Li, and Tianchu Li "Distance scale calibration of optical fiber OTDR", Proc. SPIE 3552, Fiber Optic Components and Optical Communication II, (6 August 1998); https://doi.org/10.1117/12.318004

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