Patent Application, Filed 3 May 93,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
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.
- Optical Detection and Detectors
- Electrical and Electronic Equipment