Improved Optical Transmit-Receiver Coupler.
Abstract
In the patent application an optical transmit-receive coupler includes a first transparent, electrically conductive coating contiguous to a light transmission path. A second transparent electrically conductive coating is disposed relative to the first transparent, electrically conductive coating so that a nematic liquid crystal material is contained therebetween. A source of a.c. potential is connected to the respective electrically conductive coatings to develop an electric field across the nematic liquid crystal material, causing it to be molecularly arranged to give the optical effect of a diffraction grating. Means for varying the frequency of the a.c. potential causes commensurate variation in the periodic vorticity of the nematic liquid crystal material and thereby selectively determines the wavelengths of light energy coupled through the liquid crystal material by diffraction.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1974
- Accession Number
- ADD000461
Entities
People
- Larry B Stotts
Organizations
- United States Department of the Navy