An interferometer employs liquid crystals to effect optical path length cges in a Michelson-type interferometer. A beam splitter divides a first optical signal into second and third optical signals. The second optical signal is directed through a first array of liquid crystals, and the third optical...http://www.google.fr/patents/US5600440?utm_source=gb-gplus-shareBrevet US5600440 - Liquid crystal interferometer
