Tunable semiconductor laser

US5319667A · kind A · utility

Assignee

• Alcatel N.V. · NL

Inventors

• Kaspar Dutting · Stuttgart, DE
• Olaf Hildebrand · Stuttgart, DE
• Dieter Baums · Ludwigsburg, DE
• Wilfried Idler · Asperg, DE
• Michael Schilling · Stuttgart, DE
• Klaus Wunstel · Schwieberdingen, DE

Key dates

• Filing date: Mar 22, 1993
• Grant date: Jun 7, 1994
• Expiry date: Mar 22, 2013

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/1032
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An interferometric semiconductor laser includes a cavity in the form of a Y and at east three individually actuatable active segments. A central segment couples together the individually actuatable active segments. The central segment is an active or passive segment that acts as a beam divider. The arrangement of the segments forms two resonator paths which contain at least one common active segment. At least one resonator path includes an active segment that does not belong to the other resonator path. In the absence of, or with the same actuation of the active segments, the optical path length of one resonator path differs from the optical path length of the other resonator path.