US 12,306,482 B2
Velocity matched electro-optic devices
Prashanta Kharel, Cambridge, MA (US); Mian Zhang, Cambridge, MA (US); and Christian Reimer, Wellesley, MA (US)
Assigned to HyperLight Corporation, Cambridge, MA (US)
Filed by HyperLight Corporation, Cambridge, MA (US)
Filed on May 1, 2024, as Appl. No. 18/652,711.
Application 18/652,711 is a continuation of application No. 17/896,995, filed on Aug. 26, 2022, granted, now 12,013,601.
Application 17/896,995 is a continuation of application No. 16/838,763, filed on Apr. 2, 2020, granted, now 11,474,384, issued on Oct. 18, 2022.
Prior Publication US 2024/0280846 A1, Aug. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/035 (2006.01); G02B 6/125 (2006.01); G02F 1/225 (2006.01); G02B 6/12 (2006.01)
CPC G02F 1/0356 (2013.01) [G02B 6/125 (2013.01); G02F 1/2255 (2013.01); G02B 2006/12142 (2013.01); G02F 2201/127 (2013.01); G02F 2202/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An electro-optic device comprising:
a first waveguide, a first optical signal propagating in the first waveguide having an optical signal velocity, the first waveguide including lithium; and
a first electrode, the first electrode carrying an electrical signal having an electrical signal velocity different from the optical signal velocity;
wherein the first waveguide has a first length, and the first electrode has a second length, the first length and the second length having a difference in length, the difference in length at least partially compensating for a mismatch between the electrical signal velocity and the optical signal velocity; and
wherein the first waveguide crosses a second waveguide at an intersection, the first waveguide and the second waveguide being configured such that crosstalk between the first waveguide and the second waveguide for the intersection is less than negative fifty dB.