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. 10, 2023
Filed:
May. 05, 2020
Ii-vi Delaware, Inc., Wilmington, DE (US);
Steven James Frisken, Vaucluse, AU;
II-VI DELAWARE, INC., Wilmington, DE (US);
Abstract
Described herein is a calibration system () for a wavelength selective switch (). The switch () is adapted for dynamically switching optical beams () along respective trajectories between input and output ports disposed in an array () using a reconfigurable Liquid crystal on silicon (LCOS) spatial light modulator device (). The calibration system () includes a monitor () for projecting an optical monitor beam () through at least a portion of the switch () onto the LCOS () and detecting the monitor beam () reflected from the LCOS (). In response, system () provides a calibration signal () to an active correction unit () for applying a correction to one or more of the trajectories while maintaining a constant switching state in the LCOS ().