Method for reduction of polarization fading in interferometers

Details Method for reduction of polarization fading in interferometers Method for reduction of polarization fading in interferometers

1985-04-12

1987-03-31

LaRoche, Eugene R.

Optics: measuring and testing

By particle light scattering

With photocell detection

356351, 250225, G01B 902, G02F 101

Patent

active

046539158

ABSTRACT:
A passive device for reducing polarization fading in interferometers with significantly degrading the signal-to-noise ratio. In one embodiment, light from an interferometer output is passed through a lens to a polarization mask. The polarization mask comprises at least three distinct polarizers which pass distinct states of polarization. After passing through the polarizers each independently polarized signal is detected, demodulated and passed to a means for signal extraction.

REFERENCES:
patent: 3932039 (1976-01-01), Frey
patent: 4558952 (1985-12-01), Kulesh et al.

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