Optical interferometer and method

Details Optical interferometer and method Optical interferometer and method

2011-08-23

2011-08-23

Chowdhury, Tarifur (Department: 2886)

Optics: measuring and testing

By light interference

Having wavefront division

Reexamination Certificate

active

08004692

ABSTRACT:
Disclosed are compact optical interferometer array, miniature optical interferometer array, and miniature optical interferometer. The interferometer arrays contain a spatial phase modulator array and a detector array. They are used for conducting multiple measurements. The miniature interferometer has only one component—a spatial phase modulator. Without passing through any focus lens, beam portions coming out of the modulator spread and merge together by themselves. Size of the miniature interferometer can reach subwavelength or even nanoscale. The interferometer array and miniature interferometer find applications in miniature spectrometer, color filter, display, adjustable subwavelength grating, etc.

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