Title :
Attenuation coefficient and effective cutoff wavelength of the LP 11 modes in curved optical fibers
Author :
Subdo, A.S. ; Nesset, Eivind
Author_Institution :
Norwegian Telecommun. Adm., Kjeller, Norway
fDate :
5/1/1989 12:00:00 AM
Abstract :
The measured attenuation coefficient of the LP11 modes in curved optical fibers for various radii of curvature in the wavelength region below the cutoff wavelength for LP11 modes is discussed. The experimental results indicate that the attenuation coefficient may be strongly enhanced at certain wavelengths due to phase-matched coupling between the LP11 modes of the fiber core and whispering gallery modes of cladding. Implications for measurements of the effective cutoff wavelength in optical fibers are discussed
Keywords :
optical couplers; optical fibres; attenuation coefficient; cladding; curved optical fibers; effective cutoff wavelength; phase-matched coupling; whispering gallery modes; Attenuation measurement; Interference; Length measurement; Optical attenuators; Optical fiber testing; Optical fibers; Optical propagation; Optical waveguides; Performance evaluation; Wavelength measurement;
Journal_Title :
Lightwave Technology, Journal of
