Accession Number:

ADD009909

Title:

Self-Calibrating Interferometer,

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

Report Date:

1982-10-26

Pagination or Media Count:

8.0

Abstract:

A self-calibrating interferometer which forms therein a pair of Michelson interferometers with one beam length of each Michelson interferometer being controlled by a common phase shifter. The transfer function measured form the phase shifter to either of a pair of detectors is sinusoidal with a full cycle for each half-wavelength of phase shifter travel. The phase difference between these two sinusoidal detector outputs represents the optical phase difference between a path of known distance and a path of unknown distance. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE