公开(公告)号：US20200081313A1

公开(公告)日：2020-03-12

申请号：US16683451

申请日：2019-11-14

Applicant: Elenion Technologies, LLC

Inventor： Kishore Padmaraju ,  Thomas Wetteland Baehr-Jones ,  Bernd-Harald Horst Jurgen Rohde ,  Robert Palmer ,  Matthew Akio Streshinsky ,  Marc Bohn ,  Torsten Wuth

IPC: G02F1/225 ,  G02F1/01

Abstract: An optical waveguide modulator with automatic bias control is disclosed. A dither signal is applied to the modulator bias and its signature detected in light tapped from an output of the modulator using a phase sensitive dither detector such as a lock-in amplifier. The detected signal is processed using pre-recorded information defining the direction of the detected signal change relative to a change in the modulator bias, and the bias is adjusted in the direction determined using the information. An IQ bias of a quadrature modulator is controlled by dithering bias settings of two inner modulators at different dither frequencies, and detecting an oscillation at a sum frequency.

公开(公告)号：US20180267384A1

公开(公告)日：2018-09-20

申请号：US15459066

申请日：2017-03-15

Applicant: Elenion Technologies, LLC

Inventor： Kishore Padmaraju ,  Thomas Wetteland Baehr-Jones ,  Bernd-Harald Horst Jurgen Rohde ,  Robert Palmer ,  Matthew Akio Streshinsky ,  Marc Bohn ,  Torsten Wuth

IPC: G02F1/225

CPC classification number: G02F1/225 ,  G02F1/0123 ,  G02F2001/212 ,  H04B10/516

Abstract: An optical waveguide modulator with automatic bias control is disclosed. A dither signal is applied to the modulator bias and its signature detected in light tapped from an output of the modulator using a phase sensitive dither detector such as a lock-in amplifier. The detected signal is processed using pre-recorded information defining the direction of the detected signal change relative to a change in the modulator bias, and the bias is adjusted in the direction determined using the information. An IQ bias of a quadrature modulator is controlled by dithering bias settings of two inner modulators at different dither frequencies, and detecting an oscillation at a sum frequency.

公开(公告)号：US11086187B2

公开(公告)日：2021-08-10

申请号：US16683451

申请日：2019-11-14

Applicant: Elenion Technologies, LLC

Inventor： Kishore Padmaraju ,  Thomas Wetteland Baehr-Jones ,  Bernd-Harald Horst Jurgen Rohde ,  Robert Palmer ,  Matthew Akio Streshinsky ,  Marc Bohn ,  Torsten Wuth

IPC: G02F1/225 ,  G02F1/01 ,  H04B10/516 ,  G02F1/21

Abstract: An optical waveguide modulator with automatic bias control is disclosed. A dither signal is applied to the modulator bias and its signature detected in light tapped from an output of the modulator using a phase sensitive dither detector such as a lock-in amplifier. The detected signal is processed using pre-recorded information defining the direction of the detected signal change relative to a change in the modulator bias, and the bias is adjusted in the direction determined using the information. An IQ bias of a quadrature modulator is controlled by dithering bias settings of two inner modulators at different dither frequencies, and detecting an oscillation at a sum frequency.

公开(公告)号：US10509295B2

公开(公告)日：2019-12-17

申请号：US15459066

申请日：2017-03-15

Applicant: Elenion Technologies, LLC

Inventor： Kishore Padmaraju ,  Thomas Wetteland Baehr-Jones ,  Bernd-Harald Horst Jurgen Rohde ,  Robert Palmer ,  Matthew Akio Streshinsky ,  Marc Bohn ,  Torsten Wuth

IPC: G02F1/225 ,  G02F1/01 ,  G02F1/21 ,  H04B10/516

Abstract: An optical waveguide modulator with automatic bias control is disclosed. A dither signal is applied to the modulator bias and its signature detected in light tapped from an output of the modulator using a phase sensitive dither detector such as a lock-in amplifier. The detected signal is processed using pre-recorded information defining the direction of the detected signal change relative to a change in the modulator bias, and the bias is adjusted in the direction determined using the information. An IQ bias of a quadrature modulator is controlled by dithering bias settings of two inner modulators at different dither frequencies, and detecting an oscillation at a sum frequency.