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:
Jul. 20, 2010
Filed:
Apr. 04, 2007
Harold V. Roussell, Burlington, MA (US);
Edward I. Ackerman, Cambridge, MA (US);
Harold V. Roussell, Burlington, MA (US);
Edward I. Ackerman, Cambridge, MA (US);
Photonic Systems, Inc., Billerica, MA (US);
Abstract
An apparatus for determining Vπ of an optical modulator includes an RF source that generates a variable power RF modulation signal for modulating an optical modulator. An optical detector detects a modulated optical signal generated by the optical modulator and generates an electrical detection signal in response to the detected modulated optical signal. An RF power meter measures an RF detection signal power to determine a minimum RF detection signal power, an RF modulation signal power corresponding to the minimum RF detection signal power being used to calculate Vπ of the optical modulator.