The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2000
Filed:
May. 14, 1998
Uziel Koren, Fair Haven, NJ (US);
Kang-Yih Liou, Holmdel Township, Monmouth County, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A stable single-mode wavelength selectable ring laser operates at a single wavelength which is selectable from any channel passband of a multiple-channel wavelength multiplex/demultiplexer element (e.g., an arrayed waveguide grating router (AWGR)). A Fabry-Perot semiconductor optical amplifier (FP-SOA) is connected together with the AWGR to form a ring laser structure where the FP-SOA is used as an intra-cavity narrow-band mode-selecting filter to stabilize ring laser oscillation to a single axial mode. This is the first time that a FP-SOA is used in a fiber ring laser as a mode-selecting interferometer with gain.