Title :
Theoretical investigation of light coupling phenomena in wavelength-flattened couplers
Author :
Okamoto, Katsunari
Author_Institution :
NTT Optoelectron. Lab., Kanagawa, Japan
fDate :
5/1/1990 12:00:00 AM
Abstract :
A study of light coupling phenomena in wavelength-flattened couplers by normal mode analysis is discussed. The effective index method and step approximation of the taper are used to analyze the mode coupling in the fused-taper region. It is shown that coupler parameters such as the dissimilarity of the two fibers, the degree of fusion, the minimum taper waist and the taper length should be optimized to get flat coupling characteristics. The optimum relationship among these coupler parameters is determined for fused-taper couplers employing standard telecommunication fibers
Keywords :
optical couplers; refractive index; degree of fusion; effective index method; fused-taper region; light coupling phenomena; minimum taper waist; mode coupling; normal mode analysis; standard telecommunication fibers; step approximation; taper length; wavelength-flattened couplers; Machine vision; Optical coupling; Optical fiber communication; Optical fiber couplers; Optical fiber devices; Optical fiber sensors; Optical losses; Sensor systems; Slabs; Telecommunication standards;
Journal_Title :
Lightwave Technology, Journal of
