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Proceedings Paper

Components For Angular Division Multiplexing
Author(s): G. A. Gasparian; G. J. Herskowitz; H. Kobrinski
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Paper Abstract

Angular division multiplexing has been proposed as a technique for expanding the information capacity of a single optical fiber, through the separation of modal groups into distinct information channels, which also minimize pulse spreading by means of a significant reduction in intermodal dispersion. The properties of optical fibers required for angular division multiplexing are described. Modal group excitation is achieved through the use of components which are capable of launching plane waves at different angles into the fiber. The far field at the fiber output consists of a number of concentric annular rings, each corresponding to a transmission channel. This paper contains a description of input and out-put components for achieving selective modal group excitation and detection. Measurements demonstrating the feasibility of angular division multiplexing are reported. Coupling efficiency of the input multiplexer, using a 0.5 mm GRIN rod microlens is 45.5%. Crosstalk between two channels on a 250 meter step-index fiber is -22 dB and -15 dB on a 730 meter step-index fiber.

Paper Details

Date Published: 2 August 1982
PDF: 6 pages
Proc. SPIE 0317, Integrated Optics and Millimeter and Microwave Integrated Circuits, (2 August 1982); doi: 10.1117/12.933100
Show Author Affiliations
G. A. Gasparian, ITT EOPD (United States)
G. J. Herskowitz, Stevens Institute of Technology (United States)
H. Kobrinski, Stevens Institute of Technology (United States)

Published in SPIE Proceedings Vol. 0317:
Integrated Optics and Millimeter and Microwave Integrated Circuits
Bob D. Guenther; William Pittman, Editor(s)

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