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:
Dec. 24, 2024
Filed:
Dec. 17, 2021
Acacia Communications, Inc., Maynard, MA (US);
Ricardo Aroca, Maynard, MA (US);
Abstract
Aspects of the present disclosure are directed to a multi-section mismatched modulator. In one embodiment, a segmented bias electrode is provided along the length of the optical waveguide in the optical modulator. Each segmented bias electrode may have a pre-determined bias voltage that can reduce impedance mismatches along the length of the signal electrode to reduce echoes and ripples in the modulation signal. In an embodiment implemented as a P-I-N diode modulator, the bias electrode is used to apply a reverse bias transversely to the section of the diode modulator between the bias electrode and the signal electrode. According to an aspect, RF impedance along the length of the signal electrode can be tuned by adjusting the magnitude of the reverse-bias point at different segments of the bias electrode, and be matched to a desirable impedance value to reduce reflection and ripple effects.