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:
Jan. 31, 2023
Filed:
Nov. 23, 2018
Trumpf Laser Uk Limited, Hedge End, GB;
Paulo Almeida, Cambridge, GB;
Christophe Andre Codemard, Eastleigh, GB;
Michael Kevan Durkin, Southampton, GB;
Trumpf Laser UK Limited, Hedge End, GB;
Abstract
Apparatus for providing optical radiation (), which apparatus comprises an optical input (), a coupler (), a first semiconductor amplifier (), a controller (), a preamplifier (), a power amplifier () and an output fibre (), wherein: the optical input () is for receiving input optical radiation (); the optical input () is connected in series to the coupler (), the first semiconductor amplifier (), the preamplifier (), the power amplifier (), and the output fibre (); the apparatus being characterized in that: the first semiconductor amplifier () comprises a waveguide () having a low reflecting facet (); the first semiconductor amplifier () is in a double pass configuration such that the low reflecting facet () is connected to both the optical input () and the preamplifier () via the coupler (); and the controller () is configured to cause the waveguide () of the first semiconductor amplifier () to operate in saturation thereby enabling the first semiconductor amplifier () to reduce non-linear effects in the preamplifier (), the power amplifier (), and the output fibre ().