Publications

1317 1318 THE BELL SYSTEM TECHNICAL JOURNAL, SEPTEMBER 1 9 5 9 paper the representations of the fields associated with the natural modes of propagation in helix waveguide and copper pipe are given.

In order to obtain optimum illumination at the aperture of a dualmode conical horn,1 as in the open cassegrain antenna, 2 it is necessary to control the relative amplitudes and phases of the TEn an

There has been much uncertainty about the optical quality required for the components in an optical transmission link.

Helix waveguide consisting of closely wound insulated copper wire covered with an electrically absorptive or reactive jacket (Fig.

In this paper we discuss mode conversion in a straight fiber which maintains its circular cross section but whose radius a(z) increases monotonically with the length coordinate z so that it passes

In mode-division multiplexed (MDM) transmission systems, mode coupling is responsible for inter-modal cross-talk.

Optical-fiber communication systems utilizing incoherent light sources such as light-emitting diodes require the use of multimode waveguides to insure efficient excitation of the guide.

Mode division multiplexed optical transmission enabled by all-fiber mode multiplexer is investigated. The proposed all-fiber mode multiplexer is composed of consecutive mode selective couplers.

We review mode-division multiplexing highlighting the possibilities of weakly-coupled systems: hybrid optical/digital mode separation and reduced receiver complexity.

We demonstrate one of the first experiments of optical transmission based on mode-division multiplexing over a few-mode optical fiber.