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:
May. 21, 2019
Filed:
Apr. 07, 2017
Applicant:
Lijie Qiao, Ottawa, CA;
Inventor:
Lijie Qiao, Ottawa, CA;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/08 (2006.01); H01S 3/10 (2006.01); H01S 3/16 (2006.01); H01S 3/067 (2006.01); H01S 3/0941 (2006.01);
U.S. Cl.
CPC ...
H01S 3/10023 (2013.01); H01S 3/06754 (2013.01); H01S 3/06758 (2013.01); H01S 3/06787 (2013.01); H01S 3/08059 (2013.01); H01S 3/08095 (2013.01); H01S 3/0941 (2013.01); H01S 3/10015 (2013.01); H01S 3/1608 (2013.01);
Abstract
An erbium doped block of glass has input port and reflective end faces arranged such that a signal is launched into the block and is amplified as it traverses the block following a zig-zag path. A laser diode pump is focused to excite erbium ions within the block thereby amplifying the input signal light traversing the block numerous times. A gain flattening filter flattens the gain of the signal being amplified numerous times as the filter is within the path upon each pass across the block.