US 12,461,421 B2
RF crossing in an optical modulator for equalization
Alexandre Delisle-Simard, Québec (CA); Gregory Brookes, Québec (CA); and Michael Vitic, Chelsea (CA)
Assigned to Ciena Corporation, Hanover, MD (US)
Filed by Ciena Corporation, Hanover, MD (US)
Filed on Mar. 13, 2023, as Appl. No. 18/120,894.
Prior Publication US 2024/0310688 A1, Sep. 19, 2024
Int. Cl. G02F 1/225 (2006.01); G02F 1/025 (2006.01); G02F 1/035 (2006.01)
CPC G02F 1/2255 (2013.01) [G02F 1/025 (2013.01); G02F 1/2257 (2013.01); G02F 1/0356 (2013.01); G02F 2201/127 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical modulator comprising:
an optical waveguide extending a length; and
a plurality of Radio Frequency (RF) electrodes configured to modulate an optical signal in the optical waveguide, wherein the RF electrodes include an RF crossing that is located at or near an end of the length and configured to equalize an RF response of the modulated optical signal,
wherein the RF electrodes comprise a signal electrode flanked by ground electrodes and define a 1×2 splitter and a 2×1 combiner formed as a stack of layers.