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. 21, 2008
Filed:
Feb. 22, 2006
Kalpendu Shastri, Orefield, PA (US);
Prakash Gothoskar, Allentown, PA (US);
Margaret Ghiron, Allentown, PA (US);
Vipulkumar Patel, Monmouth Junction, NJ (US);
Robert Keith Montgomery, Easton, PA (US);
Soham Pathak, Allentown, PA (US);
Katherine A. Yanushefski, Zionsville, PA (US);
Kalpendu Shastri, Orefield, PA (US);
Prakash Gothoskar, Allentown, PA (US);
Margaret Ghiron, Allentown, PA (US);
Vipulkumar Patel, Monmouth Junction, NJ (US);
Robert Keith Montgomery, Easton, PA (US);
Soham Pathak, Allentown, PA (US);
Katherine A. Yanushefski, Zionsville, PA (US);
SiOptical, Inc., Allentown, PA (US);
Abstract
An electro-optic modulator arrangement for achieving switching speeds greater than 1 Gb/s utilizes pre-emphasis pulses to accelerate the change in refractive index of the optical waveguide used to form the electro-optic modulator. In one embodiment, a feedback loop may be added to use a portion of the modulated optical output signal to adjust the magnitude and duration of the pre-emphasis pulses, as well as the various reference levels used for modulated. For free carrier-based electro-optic modulators, including silicon-based electro-optic modulators, the pre-emphasis pulses are used to accelerate the movement of free carriers at the transitions between input signal data values.