US 11,949,498 B2
Optical modulator
Thomas Duthel, Nuremberg (DE); and Helmut Preisach, Besigheim (DE)
Assigned to CISCO TECHNOLOGY, INC., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Nov. 2, 2021, as Appl. No. 17/516,879.
Claims priority of application No. 2018150 (GB), filed on Nov. 18, 2020.
Prior Publication US 2022/0158752 A1, May 19, 2022
Int. Cl. H04B 10/50 (2013.01); G02F 1/21 (2006.01); H04B 10/508 (2013.01); H04J 14/08 (2006.01)
CPC H04J 14/08 (2013.01) [G02F 1/212 (2021.01); H04B 10/5053 (2013.01); H04B 10/508 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical modulator comprising:
a first transmitter chain and a second transmitter chain;
a first optical time division multiplex generator upstream of said first transmitter chain and said second transmitter chain and configured to generate time interleaved optical pulses and transmit the time interleaved optical pulses to said first transmitter chain and said second transmitter chain;
a second optical time division multiplex generator and a third optical time division multiplex generator downstream of said first transmitter chain and said second transmitter chain and configured to receive the time interleaved optical pulses from said first transmitter chain and said second transmitter chain; and
a finite impulse response filter configured to provide correction signals for use by respective tributaries of the optical modulator.