Strength assurance of optical fiber based on screening test

Abstract

One of the most important problems in the practical application of optical transmission systems is to evaluate the reliability of the fiber in optical cable. This paper discusses reliability assurance by screening test, which is the most effective method for reliability evaluation of optical fiber strength. the condition for reliability assurance is discussed, considering the effect of such environments as water and of temperature, time‐varying strain and the distribution of strain along the longitudinal direction of the fiber. the parameters used in representing the strength distribution and fatigue characteristics of the optical fiber, which are needed in the reliability assurance, are quantitatively evaluated based on various kinds of test data. Through discussion of the permissible failure probability of the optical fiber which is required in reliability assurance of the optical transmission system, the condition for the screening test is stated.

Design and performance of ultra-high-density optical fiber cable with rollable optical fiber ribbons

“…Therefore, the failure probability of a fiber when using a feeder cable installed underground was calculated with Eqs. (4)-(6) using the parameter values in the footnote of Table 1 [11,12]. Moreover, Table 1 shows the estimated fiber strain, excluding the above fiber strain in the bent cable, based on fiber strain measurements obtained using B-OTDR [3,13] taking cable installation and use conditions into account.…”

Study of fiber management for optical board integration

“…To ensure mechanical reliability of the fiber, the least fiber length necessary for the sag to absorb the differences is estimated while the condition of a radius of curvature greater than 20 mm is kept. The condition of a radius of curvature of 20 mm is obtained from calculation of the minimum bending radius to maintain a failure rate of 0.1 fit in the fiber, with a screening distortion of 1%, from the relationship between the bend and the distortion for life design [8] and the formula for breakage rate and the failure rate [9]. As shown in Fig.…”