Share Email Print

Proceedings Paper

Multimode Switching Components For Multi-Terminal Links
Author(s): Richard A. Soref
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The use of active components for data distribution in multi-terminal fiber networks is reviewed in this paper. Our approach is to place electro-optic switches at nodes of the network. These signal-routing devices are interconnected by individual strands of multimode fiber. We shall present recent results on multimode switching in the areas of optical data busing, multiplexing, and circuit switching. A new "mirror terminal" has been developed as a low-loss means of coupling information on and off a serial bus, while time-division multi-plexing has been implemented with multipole LiTaO3 switches. The "optical crossbar" or matrix is a first step toward telecommunication switching. The matrix provides communica-tion between two groups of N terminals. This can also be done with a passive star coupler, but the matrix does not suffer a 1/N power-division loss, it sets up N independent "con-versations" simultaneously, and the circuits can be reconfigured rapidly. Multimode crossbars 3 x 2 in size are now operating in our laboratory. Fiber guides are butt-coupled to the crossbar crystal at an angle in order to collimate the 0.15-NA fiber light in the crossbar.

Paper Details

Date Published: 21 December 1978
PDF: 10 pages
Proc. SPIE 0150, Laser and Fiber Optics Communications, (21 December 1978); doi: 10.1117/12.956710
Show Author Affiliations
Richard A. Soref, Sperry Research Center (United States)

Published in SPIE Proceedings Vol. 0150:
Laser and Fiber Optics Communications
Monte Ross, Editor(s)

© SPIE. Terms of Use
Back to Top