Method of and apparatus for measuring polarization beat-length i

Details Method of and apparatus for measuring polarization beat-length i Method of and apparatus for measuring polarization beat-length i

1987-06-04

1988-07-26

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

G01N 2184, G01N 2121

Patent

active

047596244

ABSTRACT:
A constant force perpendicular to the fiber axis is applied to the fiber and is displaced step by step along the fiber axis. The state of polarization of a radiation outgoing from the fiber is determined at each step and the beat-length values are obtained from both the amplitude ratio and the phase difference between the components, along the two birefringence axes, of the electrical field associated with a radiation launched into the fiber.

REFERENCES:
R. Calvani et al., "A Fast Heterodyne Interferometer. . . ", CSELT Technical reports, vol. XIII, No. 5, Oct. 1985 - pp. 313-316.
T. Takada et al., "Precision Measurement of modal birefringence . . . " Applied Optics, vol. 24, No. 24, Dec. 15, 1984, pp. 4387-4391.

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