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.

Date of Patent:
Nov. 07, 2023

Filed:

Mar. 15, 2023
Applicant:

Ii-vi Delaware, Inc., Wilmington, DE (US);

Inventors:

Ryan Davis, Natrona Heights, PA (US);

Wen-Qing Xu, Sarver, PA (US);

Elgin Eissler, Renfrew, PA (US);

Fred Kropf, Cranberry Township, PA (US);

Assignee:

II-VI Delaware, Inc., Wilmington, DE (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1362 (2006.01); G02F 1/03 (2006.01); G02F 1/01 (2006.01);
U.S. Cl.
CPC ...
G02F 1/0316 (2013.01); G02F 1/0136 (2013.01); G02F 2202/101 (2013.01); G02F 2202/106 (2013.01);
Abstract

A high-power electro-optic modulator (EOM) is formed to use specialized electrodes of a material selected to have a CTE that matches the CTE of the modulator's crystal. Providing CTE matching reduces the presence of stress-induced birefringence, which is known to cause unwanted modulation of the propagating optical signal. The specialized electrodes are preferably formed of a CuW metal matrix composite having a W/Cu ratio selected to create the matching CTE value. Advantageously, the CuW-based electrodes also exhibit a thermal conductivity about an order of magnitude greater than conventional electrode material (brass, Kovar) and thus provide additional thermal stability to the EOM's performance.


Find Patent Forward Citations

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Davis, Ryan. (2023). Electro-optic modulator utilizing copper-tungsten electrodes for improved thermal stability and method of forming the same (U.S. Patent No. 11809028). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11809028

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