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:
Nov. 14, 2023
Filed:
Mar. 08, 2023
Applicant:
Exfo Optics, Sas, Lannion, FR;
Inventor:
Xavier Lambert, Trebeurden, FR;
Assignee:
EXFO Optics, SAS, Lannion, FR;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01J 1/44 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
G01J 1/44 (2013.01); H03F 3/45475 (2013.01); G01J 2001/446 (2013.01);
Abstract
There is proposed an optical power measurement circuit and an optical power meter which use a linear amplification circuit based on multiple transimpedance operational amplification lanes and which add a bootstrap circuit and a compensator circuit. 1) The bootstrap is used to reduce the effect of the photodiode capacitance and increases the amplifier's bandwidth. 2) The compensator circuit monitors the photodiode's voltage and reproduces its transient distortions, to then subtract it from the output and thereby reduce the measurement error.