DEVICE FOR MEASUREMENTS OF INTERFERENCE Russian patent published in 2006 - IPC G01B9/02 G01J9/02 

FIELD: engineering of interference measuring devices.

SUBSTANCE: device is made with possible input of optical radiation into second port of optical interference meter while providing for identical nature of modes of optical radiations coming from first and second ports of optical interference meter, and identical nature of optical radiations modes, coming from first and second ports of optical interference meter into referent shoulder of optical interference meter. Device may include one or two sources of optical radiation. When using one source device has polarization branching device, mounted behind the source along movement direction of radiation. One of outputs of polarization branching device can be made in form of, for example, Michelson interference meter, containing three-port commutators, or in form of Mach-Zehnder interference meter. Utilization of two sources of optical radiation allows also to perform multiplexing without spectrum losses of power.

EFFECT: improved effectiveness of utilization of optical radiation source power.

23 cl, 6 dwg