Accession Number:

ADD009162

Title:

Generalized Coupler Realization for Use in Fiber Optic Systems.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1981-12-21

Pagination or Media Count:

16.0

Abstract:

An apparatus permits the splitting of optical energy coming through a first optical port to at least a second optical port. A first quarter-pitch graded refractive index lense has an input surface disposed adjacent the first optical port for imaging at least a portion of the optical energy by having an image plane coinciding with the input surface. A second quarter-pitch graded refractive index lense had an output surface disposed adjacent the second optical port for imaging at least a portion of the optical energy by having an image plane coinciding with the output surface. A means is interposed between the first quarter-pitch graded refractive index lense and the second quarter-pitch graded refractive index lense for reflecting at least a portion of the optical energy to a third optical port located adjacent the input surface and next to the first optical port and for transmitting at least a portion of the optical energy to the second port. The reflecting and transmitting means is optionally a partially silvered layer interposed between the two quarter-pitch graded refractive index lenses to provide a selective reflectability and a desired tap-off ratio.

Subject Categories:

  • Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE