Method and apparatus for measuring chromatic dispersion

Details Method and apparatus for measuring chromatic dispersion Method and apparatus for measuring chromatic dispersion

2006-06-20

2006-06-20

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

07064815

ABSTRACT:
A test signal light intensity-modulated with a test data is generated and enters the optical transmission line. An extractor extracts the first and second optical components from the test signal light output from the optical transmission line, the first and second optical components composed of any one of a main signal light component, an upper sideband component, and/or a lower sideband component. A time difference measuring apparatus measures a time difference between the first and second optical components. A converter converts the measured time difference into a chromatic dispersion value.

REFERENCES:
patent: 4752125 (1988-06-01), Schicketanz et al.
patent: 6429929 (2002-08-01), Babin et al.
patent: 2003/0123884 (2003-07-01), Willner et al.
Sano, et al., “Automatic dispersion equalization by monitoring extracted-clock power level in a 40-Gbit/s, 200-km transmission line,” TuD.3.5, 22nd European Conference on Optical Communication (ECOC'96) vol. 2, pp. 207-210, Oslo.
Petersen, et al., “Dispersion monitoring and compensation using a single in-band subcarrier tone,” WH4-1-3, OFC 2001.
Yu, et al., “Chromatic Dispersion Monitoring Technique Using Sideband Optical Filtering and Clock Phase-Shift Detection,” Journal of Lightwave Technology, vol. 20, No. 12, Dec. 2002, pp. 2267-2271.

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