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:
Sep. 08, 2026
Filed:
Jul. 25, 2023
Viavi Solutions Inc., Chandler, AZ (US);
Eberhard Lothar Loecklin, Reutlingen, DE;
VIAVI SOLUTIONS INC., Chandler, AZ (US);
Abstract
A monochromator apparatus for an optical spectrum analyzer (OSA) may include a diffraction grating and a sensor. For calibration of the monochromator, an optical signal may be received and a 0order diffracted signal and an angle of the 0order diffracted signal may be detected, where the 0order diffracted signal is obtained by diffracting the optical signal on the diffraction grating. The angle of the 0order diffracted signal may be set as a reference angle and a next order diffracted signal and an angle of the next order diffracted signal detected. A wavelength of the next order diffracted signal may be determined based on the reference angle and the other angle of the next order diffracted signal using a look-up table or a grating equation-based computation. The calibration may be performed for each sweep of the OSA, at the beginning of a measurement, periodically, or on-demand.