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:
Jun. 17, 2008
Filed:
Jul. 08, 2003
Mark E Froggatt, Blacksburg, VA (US);
Brian J Soller, Blacksburg, VA (US);
Matthew S Wolfe, Christiansburg, VA (US);
Mark E Froggatt, Blacksburg, VA (US);
Brian J Soller, Blacksburg, VA (US);
Matthew S Wolfe, Christiansburg, VA (US);
Luna Innovations Incorporated, Roanoke, VA (US);
Abstract
A heterodyne optical signal analyzer (HOSA) permits accurate reconstruction of an optical input signal (Es) in the time domain. In one embodiment, a vector representation of the light is used to account for two polarization states of the optical signal. The components of a heterodyne optical signal analyzer (), including optical couplers (), all have errors and offsets. For example, optical power detectors () are very sensitive to changes in polarization of the optical signal (Es) and of the reference signal (Er). Several HOSA calibration procedures including detector calibration, vector calibration, and reference signal calibration are described.