Measuring dispersion between two modes of an optical fibre using time-domain and spectral-domain low-coherence interferometry

Group optical path difference (OPD) between two modes of an optical fibre excited by a low-coherence source characterized by a multimode spectrum is evaluated measuring both the visibility dependence in the Michelson interferometer configuration and the spectral modulation at the output of the optical fibre. Using the Fourier-transform method in processing the measured spectral modulations, a slight wavelength dependence in the group OPD between two modes of the optical fibre is resolved. Comparing the group OPD corresponding to a central wavelength of the measured spectral region with the group OPD obtained from the measured visibility dependence, good agreement between results of the measurements in the spectral domain and in the time domain is achieved.

[1]  J Schwider,et al.  Dispersive interferometric profilometer. , 1994, Optics letters.

[2]  Juichi Noda,et al.  Interferometric optical-time-domain reflectometer to determine backscattering characterization of silica-based glass waveguides , 1990 .

[3]  D. A. Jackson,et al.  Coherence tuned fiber optic sensing system, with self-initialization, based on a multimode laser diode. , 1990, Applied optics.

[4]  B L Danielson,et al.  Absolute optical ranging using low coherence interferometry. , 1991, Applied optics.

[5]  Philippe Robert,et al.  Measuring integrated optical circuits using a low-coherence light source , 1995 .

[6]  Petr Hlubina.  Measuring a two-mode optical fiber using modulation of the spectrum of a low-coherence source at its output , 1997 .

[7]  Petr Hlubina.  Analysis of Low-coherence Excitation of a Two-mode Fibre Waveguide in the Michelson Interferometer Configuration , 1994 .

[8]  R Dändliker,et al.  Dispersive white-light interferometry for absolute distance measurement with dielectric multilayer systems on the target. , 1996, Optics letters.

[9]  Petr Hlubina,et al.  The Mutual Interference of Modes of a Few-mode Fibre Waveguide Analysed in the Frequency Domain , 1995 .

[10]  M. Takeda,et al.  Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry , 1982 .

[11]  R. Posey,et al.  Dual-mode fiber-optic interferometer: a novel design. , 1995, Optics letters.

[12]  K Bløtekjær,et al.  Two-mode fiber-optic time-delay scanner for white-light interferometry. , 1995, Optics letters.

[13]  Emil Wolf,et al.  Principles of Optics: Contents , 1999 .

[14]  A Wang,et al.  White-light scanning fiber Michelson interferometer for absolute position-distance measurement. , 1995, Optics letters.

[15]  Petr Hlubina,et al.  Experimental demonstration of the spectral interference between two linearly polarized modes at the output of a fibre waveguide excited by a low-coherence source , 1996 .

[16]  Eric Udd,et al.  Fiber Optic Sensors , 1992 .

[17]  T C Strand,et al.  Profilometry with a coherence scanning microscope. , 1990, Applied optics.

[18]  A Sharma,et al.  LP(01)-LP(02) interference using a spectrally extended light source: measurement of the non-step-refractive-index profile of optical fibers. , 1996, Optics letters.