We discuss the theory of the Bracewell nulling interferometer and explicitly demonstrate that the phase of the ‘‘white light’’ null fringe is the same as the phase of the bright output from an ordinary stellar interferometer. As a consequence, a ‘‘closure phase’’ exists for a nulling interferometer with three or more telescopes. We calculate the phase offset as a function of baseline length for...

Laser interferometer gravitational wave detectors can be operated at their free spectral range frequency. We show that in this case and when the interferometer is well understood one could detect a stochastic background using a single detector.

A 40 Gbit/s delay-line interferometer realized in SOI rib waveguide technology is presented. Across the C-band we demonstrate high uniformity, low loss, low PDL, and PDF as low as 1 GHz for the SOI interferometer.

In this paper a method for digitally recording four quarter-reference-waveholograms (by CCD) in a Mach-Zehnder interferometer setup, and reconstructing the object wave-front by numerical method is presented. The terms of direct transmission, auto-correlation and conjugate wave in the four wave reconstruction are cancelled out and only one original object wave is left after overlapping. Reconstr...

Li, Yanzeng M.S.O.E. Rose-Hulman Institute of Technology May 2014 Quantitative data extraction using spatial Fourier transform in inversion shear interferometer Thesis Advisor: Dr. Scott R. Kirkpatrick Currently there are many interferometers used for testing wavefront, measuring the quality of optical elements, and detecting refractive index changes in a certain medium. Each interferometer has...

In ESA's Infrared Space Interferometry mission, a multi-aperture interferometer fed by telescopes will serve to analyse exoplanets orbiting bright stars. Spectroscopy of the planet's radiation could give hints on the possibility of the existence of life. However, for a Sun/Earth-like constellation, a star light rejection ratio of some 80dB is required. This is the factor by which the star light...

A grating lateral shear interferometer is described that can be used with a white light source. The use of the interferometer with certain types of extended sources is also demonstrated.

Fabricating an electrically switchable cylindrical Fresnel lens based on holographic polymer-dispersed liquid crystals (H-PDLC) using a Michelson interferometer is reported. Simplicity of the method and possibility of fabricating different focal length lenses in a single set up are among the advantages of the method. It is demonstrated that the Fresnel structured zone plate acts as a cylindrica...