title: Thermal characteristics of optical pulse transit time delay and fiber strain in a single-mode optical fiber cable.
abstract: Thermal characteristics of optical pulse transit time delay and fiber strain in a single-mode optical fiber cable are investigated theoretically and experimentally. Measurements of the transit time delay shift are made by a spatial interference technique using a 1.5-in long fiber, six-fiber unit, and cable. Experimental results for a jacketed fiber whose fiber axis is well centered in nylon coating are in good agreement with those predicted from the theory. A jacketed fiber whose fiber axis is positioned eccentrically from the jacket center exhibits a small change in fiber strain at low temperature due to fiber buckling compared with that for the well-centered jacketed fiber. The loss increase for the off-centered jacketed fiber is explained by the buckling model. Furthermore, thermal characteristics of the unit-type cable examined here are found to coincide with those for the constituent six-fiber unit.
authors.affiliation: NTT Ibaraki Electrical Communication Laboratory, Tokai, Ibaraki-ken 319-11, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Shibata
authors.forename: Y
authors.initials: Y
authors.lastname: Katsuyama
authors.forename: Y
authors.initials: Y
authors.lastname: Mitsunaga
authors.forename: M
authors.initials: M
authors.lastname: Tateda
authors.forename: S
authors.initials: S
authors.lastname: Seikai