公开(公告)号：US20210223659A1

公开(公告)日：2021-07-22

申请号：US16746843

申请日：2020-01-18

Applicant: Cisco Technology, Inc.

Inventor： Craig S. APPEL ,  Peter C. METZ

IPC: G02F1/225 ,  G02F1/01 ,  G02F1/025

Abstract: The present disclosure provide for active boost in an electrical driver via a frequency comparator, configured to determine operational characteristics of an electrical circuit connected to an optical modulator based on a frequency difference between a ring oscillator and the clock signal; an electrical driver configured to drive a phase shift of a first optical signal carried on a first arm relative to a second optical signal carried on a second arm of an optical modulator, the electrical driver comprising: a first signal pathway, connected to the first arm of the optical modulator, wherein the first signal pathway includes: an adjustable gain inverter, electrically connected to first and second nodes; a fixed gain inverter, electrically connected to the first and second nodes; an inductor electrically connected between the second node and a third node; and a non-inverting amplifier connected between the third node and the first node.

公开(公告)号：US20240421772A1

公开(公告)日：2024-12-19

申请号：US18813356

申请日：2024-08-23

Applicant: Cisco Technology, Inc.

Inventor： Craig S. APPEL ,  Peter C. METZ ,  Joseph V. PAMPANIN ,  Sanjay SUNDER

IPC: H03F1/02 ,  H03F3/45 ,  H03K5/24

Abstract: Embodiments provide for a tunable driving circuit by monitoring a frequency of a ring oscillator of an electrical integrated circuit connected to an optical modulator to determine operational characteristics of the electrical integrated circuit; setting, based on the operational characteristics, a driving voltage for a plurality of tunable inverters and a plurality of fixed gain inverters that control the optical modulator, wherein each tunable inverter of the plurality of tunable inverters is connected in parallel with a corresponding fixed gain inverter of the plurality of fixed gain inverters on one of a first arm and a second arm connected to the optical modulator; and setting an amplification strength for the plurality of tunable inverters based on the operational characteristics.

公开(公告)号：US20220390807A1

公开(公告)日：2022-12-08

申请号：US17820747

申请日：2022-08-18

Applicant: Cisco Technology, Inc.

Inventor： Craig S. APPEL ,  Peter C. METZ

IPC: G02F1/225 ,  G02F1/025 ,  G02F1/01

Abstract: The present disclosure provide for active boost in an electrical driver via a frequency comparator, configured to determine operational characteristics of an electrical circuit connected to an optical modulator based on a frequency difference between a ring oscillator and the clock signal; an electrical driver configured to drive a phase shift of a first optical signal carried on a first arm relative to a second optical signal carried on a second arm of an optical modulator, the electrical driver comprising: a first signal pathway, connected to the first arm of the optical modulator, wherein the first signal pathway includes: an adjustable gain inverter, electrically connected to first and second nodes; a fixed gain inverter, electrically connected to the first and second nodes; an inductor electrically connected between the second node and a third node; and a non-inverting amplifier connected between the third node and the first node.

公开(公告)号：US20220337194A1

公开(公告)日：2022-10-20

申请号：US17810792

申请日：2022-07-05

Applicant: Cisco Technology, Inc.

Inventor： Craig S. APPEL ,  Peter C. METZ ,  Joseph V. PAMPANIN ,  Sanjay SUNDER

IPC: H03F1/02 ,  H03F3/45 ,  H03K5/24

Abstract: Embodiments provide for a tunable driving circuit by monitoring a frequency of a ring oscillator of an electrical integrated circuit connected to an optical modulator to determine operational characteristics of the electrical integrated circuit; setting, based on the operational characteristics, a driving voltage for a plurality of tunable inverters and a plurality of fixed gain inverters that control the optical modulator, wherein each tunable inverter of the plurality of tunable inverters is connected in parallel with a corresponding fixed gain inverter of the plurality of fixed gain inverters on one of a first arm and a second arm connected to the optical modulator; and setting an amplification strength for the plurality of tunable inverters based on the operational characteristics.

公开(公告)号：US20200373885A1

公开(公告)日：2020-11-26

申请号：US16417295

申请日：2019-05-20

Applicant: Cisco Technology, Inc.

Inventor： Craig S. APPEL ,  Peter C. METZ ,  Joseph V. PAMPANIN ,  Sanjay SUNDER

IPC: H03F1/02 ,  H03K5/24 ,  H03F3/45

Abstract: Embodiments provide for a tunable driving circuit by monitoring a frequency of a ring oscillator of an electrical integrated circuit connected to an optical modulator to determine operational characteristics of the electrical integrated circuit; setting, based on the operational characteristics, a driving voltage for a plurality of tunable inverters and a plurality of fixed gain inverters that control the optical modulator, wherein each tunable inverter of the plurality of tunable inverters is connected in parallel with a corresponding fixed gain inverter of the plurality of fixed gain inverters on one of a first arm and a second arm connected to the optical modulator; and setting an amplification strength for the plurality of tunable inverters based on the operational characteristics.