Abstract

A nonincremental interferometer is shown in which the dynamical spectral filtering of a superluminescent source induces a broadband sinusoidal frequency modulation. The method reaches very high resolution limits in distance measurements (a theoretical expectation of 1012m/Hz is obtained) while maintaining all the advantages of heterodyne phase-recovery processing. Comparison with other nonincremental interferometric approaches is given.

© 1991 Optical Society of America

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