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:
Jun. 26, 2001
Filed:
Jan. 02, 1999
Ulrich Kohn, Backnang, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A device with an optical fiber amplifier, wherein a control circuit is provided for stabilizing the amplification. In the control circuit, a supplemental optical signal (z) is supplied to the input of the fiber amplifier within its optical amplification bandwidth. The level of the former is controlled by a control member (Q), to whose first input a first measuring signal (m1) is supplied, which represents the level of an optical signal, amplified by the fiber amplifier (V), from a first area of the amplification bandwidth. A second measuring signal (m2) is present at the second input of the control member, which represents the level of a not yet amplified optical signal from the second area of the amplification bandwidth.