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METHOD AND DEVICE FOR MEASURING DOUBLE REFRACTION OF OPTICAL FIBER, METHOD OF MEASURING POLARIZATION MODE DISPERSION OF OPTICAL FIBER AND OPTICAL FIBER
METHOD AND DEVICE FOR MEASURING DOUBLE REFRACTION OF OPTICAL FIBER, METHOD OF MEASURING POLARIZATION MODE DISPERSION OF OPTICAL FIBER AND OPTICAL FIBER
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机译：测量光纤双折射的方法和装置，测量光纤偏振态色散的方法和光纤
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摘要
In a method of measurement of the birefringence of an optical fiber, the round-trip Jones matrix R(z) for a first interval (0, z) from a measurement starting point 0 in the optical fiber for measurement to a prescribed position z, and the round-trip Jones matrix R(z+Δz) for a second interval (0, z+Δz) from the measurement starting point 0 to a position z+Δz differing from the position z, are acquired, the eigenvalues ρ1, ρ2 of the matrix R(z+Δz)R(z)-1 are determined, and by computing the following equations (1) and (2), (where Ф represents the phase difference between linear polarization components due to birefringence, Δn represents birefringence, and λ, represents wavelength), the birefringence in the infinitesimal interval Δz from the position z to the position z+Δz is obtained.
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