Accession Number : ADD015906

Title :   Specification.

Descriptive Note : Patent Application, Filed 3 May 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Esman, Ronald ; Dulind, Irl N ; Kersey, Alan D

Report Date : 03 May 1993

Pagination or Media Count : 14

Abstract : An apparatus and method for converting a signal of arbitrary polarization to one of preselected polarization, e.g. for use by a sensor, transducer, etc. A signal splitter divides the input signal into its orthogonal linearly polarized components, and launches the components from a pair of output ports. The signals counterpropagate to the opposite port, and, while counterpropagating, are rotated into the same linear polarization state. In one embodiment, the rotation is done by a pair of complementary 45 deg Faraday rotators; in another, by one 90 deg rotator. In the former, the signal is recombined at the splitter in the initial state of polarization that in which the signal initially entered the splitter; in the latter, the recombined signal is of orthoconjugate polarization to the input signal.

Descriptors :   *PATENT APPLICATIONS, *SIGNALS, *POLARIZATION, *OPTICAL DETECTORS, *LINEAR SYSTEMS, TRANSDUCERS, ORTHOGONALITY, PROPAGATION, PORTS(OPENINGS), ROTATION, FARADAY EFFECT, FIBER OPTICS

Subject Categories : Optics
      Optical Detection and Detectors
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE