Multistage switching facility for optical signals

US5369514A · kind A · utility

Assignee

• Alcatel N.V. · NL

Inventors

• Gert Eilenberger · Stuttgart, DE
• Dietrich Bottle · Salach, DE

Key dates

• Filing date: Mar 25, 1993
• Grant date: Nov 29, 1994
• Expiry date: Mar 25, 2013

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q2011/002
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A multistage switching facility for optical signals where time conversions are only used in the last stage while only space and frequency conversions are used in the other stages. The last stage contains space, time and frequency position converters resulting in a facility in which no signal overtaking is possible when multiple routing is provided in the switching facility.