Title :
Light-propagation characteristics in thermally diffused expanded core fibers
Author :
Shiraishi, Kazuo ; Yanagi, Takuya ; Kawakami, Shojiro
Author_Institution :
Fac. of Eng., Utsunomiya Univ., Japan
fDate :
10/1/1993 12:00:00 AM
Abstract :
Characteristics of light propagation in thermally diffused expanded-core (TEC) fibers are analyzed. Changes in the modal-field distributions along fibers and transition losses are obtained by use of the propagating-beam method. It is found that a transition length sufficiently longer than the characteristic length is necessary to expand or reduce the field diameter with low losses. A simplified model for understanding the mechanism of light propagation in TEC fibers is presented. Transmission losses between TEC fibers having imperfect splices are measured, the results are compared with those obtained by a simple theory and an exact theory
Keywords :
optical fibre theory; optical losses; characteristic length; field diameter; imperfect splices; light-propagation characteristics; low losses; modal-field distributions; propagating-beam method; thermally diffused expanded core fibers; transition length; transition losses; transmission losses; Loss measurement; Optical devices; Optical fiber communication; Optical fiber devices; Optical fiber losses; Optical fiber sensors; Optical fiber theory; Optical propagation; Propagation losses; Thermal expansion;
Journal_Title :
Lightwave Technology, Journal of
