Analysis and test of the coupling mode in the bend single-mode fiber

In this paper, we presented the results of bend loss measurements for single-mode optical fiber over wide bend radius 1mm ~ 8mm and wavelength 1530nm ~ 1565nm. The oscillations caused by the coupling between the whispering gallery mode propagating in the cladding and the buffer and the core guided fundamental mode was observed versus both bend radius and wavelength. And a good agreement between the experimental results and the theoretical numerical evaluation was obtained.

[1]  Masashi Hotta,et al.  Coupled-Mode Analysis of Loss in Bent Single-Mode Optical Fibers , 2000 .

[2]  W. A. Gambling,et al.  Measurement of radiation loss in curved single-mode fibres , 1978 .

[3]  Irene A. Stegun,et al.  Handbook of Mathematical Functions. , 1966 .

[4]  A. Harris,et al.  Wavelength demultiplexing using bends in a single-mode optical fiber , 1988 .

[5]  Giuseppe Martini,et al.  Bend loss in single-mode fibers , 1997 .

[6]  Julian D. C. Jones,et al.  Observation of secondary bend loss oscillations arising from propagation of cladding modes in buffered monomode optical fibres , 1991 .

[7]  Julian D. C. Jones,et al.  Determination of monomode fiber buffer properties , 1994 .

[8]  Helle Vendeltorp-Pommer,et al.  Bending loss and field distributions in a bent fibre calculated with a beam propagating method , 1990 .

[9]  Charles Vassallo,et al.  Perturbation of a LP mode of an optical fibre by a quasi-degenerate field: a simple formula , 1985 .

[10]  Kevin Barraclough,et al.  I and i , 2001, BMJ : British Medical Journal.

[11]  Dietrich Marcuse,et al.  Curvature loss formula for optical fibers , 1976 .

[12]  I. Valiente,et al.  New formalism for bending losses in coated single-mode optical fibres , 1989 .

[13]  W. Gambling,et al.  Curvature and microbending losses in single-mode optical fibres , 1979 .

[14]  R. Pepper,et al.  Bending Losses of Coated Single-Mode Optical Fibers , 1978 .

[15]  A. Harris,et al.  Bend loss measurements on high numerical aperture single-mode fibers as a function of wavelength and bend radius , 1986 .

[16]  S K Yao,et al.  Microbending loss in a single-mode fiber in the pure-bend loss regime. , 1982, Applied optics.

[17]  M. Tsubokawa,et al.  Optimum parameter design of Er/sup 3+/-doped fiber for optical amplifiers , 1991, IEEE Photonics Technology Letters.

[18]  H. Renner,et al.  Bending losses of coated single-mode fibers: a simple approach , 1992 .

[19]  C. Vassallo,et al.  Scalar-field theory and 2-D ray theory for bent single-mode weakly guiding optical fibers , 1985 .