Invention Grant
- Patent Title: Feed-forward optical equalization using an electro-optic modulator with a multi-segment electrode and distributed drivers
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Application No.: US16003051Application Date: 2018-06-07
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Publication No.: US10663770B2Publication Date: 2020-05-26
- Inventor: Nicolas Dupuis , Tam N. Huynh , Benjamin G. Lee , Jonathan E. Proesel , Renato Rimolo-Donadio , Alexander V. Rylyakov , Clint L. Schow
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Intelletek Law Group, PLLC
- Agent Gabriel Daniel, Esq.
- Main IPC: H04B10/516
- IPC: H04B10/516 ; G02F1/01 ; G02F1/225 ; H04B10/50 ; H04B10/54 ; G02F1/21

Abstract:
A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.
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