Patent · US Expired

Optical wavelength-division multiplex system

US4441181A · kind A · utility

25Cited by

2References

16Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Gerhard Winzer · Munich, DE
Hans Mahlein · Unterhaching, DE
Achim Reichelt · Unterhaching, DE

Key dates

Filing date	Sep 17, 1981
Grant date	Apr 3, 1984
Priority date	—
Expiry date	Sep 17, 2001

Classification

Technology area (CPC H)Electricity
CPC primaryH04J14/0307
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An optical wavelength division multiplex system having a multiplexer unit, a demultiplexer unit and means for forming a transmission path between the two units characterized by each of the multiplexer and demultiplexer units being composed of at least two reflecting grating modules interconnected by at least one interference module which reflection and interference modules of each unit are matched to one another. The system enables increasing the number of transmission channels with different carrier wavelengths while the insertion losses are maintained in an acceptable range.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.