Apparatus and method for correcting errors generated by a...

Details Apparatus and method for correcting errors generated by a... Apparatus and method for correcting errors generated by a...

2005-05-31

2005-05-31

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

By light interference

Using fiber or waveguide interferometer

C356S073100

Reexamination Certificate

active

06900897

ABSTRACT:
The present invention is an apparatus and method for correcting errors generated by a laser with non-ideal tuning characteristics, the apparatus comprises a laser having non-ideal tuning characteristics. At least three interferometers are positioned in an operable relationship to the laser, wherein a sampling interferometer and at least one auxiliary interferometer correct for residual errors resulting from the laser; and wherein a measurement interferometer makes a measurement. A signal acquisition system is positioned in an operable relationship to each interferometer and a processor is positioned in an operable relationship to the signal acquisition system.

REFERENCES:
patent: 5798521 (1998-08-01), Froggatt
patent: 6376830 (2002-04-01), Froggatt
patent: 6545760 (2003-04-01), Froggatt et al.
patent: 6566648 (2003-05-01), Froggatt

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