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公开(公告)号：US20210286190A1
公开(公告)日：2021-09-16
申请号：US17301968
申请日：2021-04-20
Applicant: Cisco Technology, Inc.
Inventor： Tao LING , Yi Ho LEE , Ravi S. TUMMIDI , Mark A. WEBSTER
Abstract: Aspects described herein include an optical apparatus comprising an input port configured to receive an optical signal comprising a plurality of wavelengths, and a plurality of output ports. Each output port is configured to output a respective wavelength of the plurality of wavelengths. The optical apparatus further comprises a first plurality of two-mode Bragg gratings in a cascaded arrangement. Each grating of the first plurality of two-mode Bragg gratings is configured to reflect a respective wavelength of the plurality of wavelengths toward a respective output port of the plurality of output ports, and transmit any remaining wavelengths of the plurality of wavelengths.
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公开(公告)号：US20240393530A1
公开(公告)日：2024-11-28
申请号：US18791228
申请日：2024-07-31
Applicant: Cisco Technology, Inc.
Inventor： Yi Ho LEE , Tao LING , Ravi S. TUMMIDI , Mark A. WEBSTER , Prakash B. GOTHOSKAR
Abstract: Fabrication-tolerant on-chip multiplexers and demultiplexers are provides via a lattice filter interleaver configured to receive an input signal including a plurality of individual signals and to produce a first interleaved signal with a first subset of the plurality of individual signals and a second interleaved signal with a second subset of the plurality of individual signals; a first Bragg interleaver configured to receive the first interleaved signal and produce a first output signal including a first individual signal of the plurality of individual signals and a second output signal including a second individual signal of the plurality of individual signals; and a second Bragg interleaver configured to receive the second interleaved signal and produce a third output signal including a third individual signal of the plurality of individual signals and a fourth output signal including a fourth individual signal of the plurality of individual signals.
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公开(公告)号：US20210181419A1
公开(公告)日：2021-06-17
申请号：US17187477
申请日：2021-02-26
Applicant: Cisco Technology, Inc.
Inventor： Yi Ho LEE , Tao LING , Ravi S. TUMMIDI , Mark A. WEBSTER
Abstract: An optical device is disclosed, including a phase delay, a first adiabatic coupler adapted to receive an input signal and adapted to be optically coupled to an input of the phase delay, and a second adiabatic coupler adapted to be optically coupled to an output of the phase delay. The second adiabatic coupler includes a first waveguide including a first portion optically coupled to the first output and including a first width, and a second waveguide including a second portion optically coupled to the second output and including a second width that is approximately equal to the first width.
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Patent Agency Ranking
公开(公告)号：US20230076009A1
公开(公告)日：2023-03-09
申请号：US18056160
申请日：2022-11-16
Applicant: Cisco Technology, Inc.
Inventor： Tao LING , Ravi S. TUMMIDI , Yi Ho LEE , Mark A. WEBSTER
Abstract: Process margin relaxation is provided in relation to a compensated-for process via a first optical device, fabricated to satisfy an operational specification when a compensated-for process is within a first tolerance range; a second optical device, fabricated to satisfy the operational specification when the compensated-for process is within second tolerance range, different than the first tolerance range; a first optical switch connected to an input and configured to output an optical signal received from the input to one of the first optical device and the second optical device; and a second optical switch configured to combine outputs from the first optical device and the second optical device.
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公开(公告)号：US20210173237A1
公开(公告)日：2021-06-10
申请号：US16708248
申请日：2019-12-09
Applicant: Cisco Technology, Inc.
Inventor： Yi Ho LEE , Ming Gai Stanley LO , Vipulkumar K. PATEL , Prakash B. GOTHOSKAR
Abstract: Embodiments herein describe reverse biasing one or more PIN junctions formed in at least one layer of a PSR. The resulting electric fields in the PIN junctions overlap with the optical path of the optical signal and sweep away photo-generated hole-electron free carriers away. That is, the electric fields in the PIN junctions remove the free carriers from the path of the optical signal and reduces the population of the free carriers, thereby mitigating the negative impact of free-carrier absorption (FCA).
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公开(公告)号：US20230119450A1
公开(公告)日：2023-04-20
申请号：US17451247
申请日：2021-10-18
Applicant: Cisco Technology, Inc.
Inventor： Yi Ho LEE , Tao LING , Ravi S. TUMMIDI , Mark A. WEBSTER , Prakash B. GOTHOSKAR
Abstract: Fabrication-tolerant on-chip multiplexers and demultiplexers are provides via a lattice filter interleaver configured to receive an input signal including a plurality of individual signals and to produce a first interleaved signal with a first subset of the plurality of individual signals and a second interleaved signal with a second subset of the plurality of individual signals; a first Bragg interleaver configured to receive the first interleaved signal and produce a first output signal including a first individual signal of the plurality of individual signals and a second output signal including a second individual signal of the plurality of individual signals; and a second Bragg interleaver configured to receive the second interleaved signal and produce a third output signal including a third individual signal of the plurality of individual signals and a fourth output signal including a fourth individual signal of the plurality of individual signals.
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公开(公告)号：US20210345022A1
公开(公告)日：2021-11-04
申请号：US17305287
申请日：2021-07-02
Applicant: Cisco Technology, Inc.
Inventor： Tao LING , Ravi S. TUMMIDI , Yi Ho LEE , Mark A. WEBSTER
Abstract: Process margin relaxation is provided in relation to a compensated-for process via a first optical device, fabricated to satisfy an operational specification when a compensated-for process is within a first tolerance range; a second optical device, fabricated to satisfy the operational specification when the compensated-for process is within second tolerance range, different than the first tolerance range; a first optical switch connected to an input and configured to output an optical signal received from the input to one of the first optical device and the second optical device; and a second optical switch configured to combine outputs from the first optical device and the second optical device.
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公开(公告)号：US20210109281A1
公开(公告)日：2021-04-15
申请号：US17107298
申请日：2020-11-30
Applicant: Cisco Technology, Inc.
Inventor： Tao LING , Yi Ho LEE , Ravi S. TUMMIDI , Mark A. WEBSTER
Abstract: Aspects described herein include an optical apparatus comprising a multiple-stage arrangement of two-mode Bragg gratings comprising: at least a first Bragg grating of a first stage. The first Bragg grating is configured to transmit a first two wavelengths and to reflect a second two wavelengths of a received optical signal. The optical apparatus further comprises a second Bragg grating of a second stage. The second Bragg grating is configured to transmit one of the first two wavelengths and to reflect an other of the first two wavelengths. The optical apparatus further comprises a third Bragg grating of the second stage. The third Bragg grating is configured to transmit one of the second two wavelengths and to reflect an other of the second two wavelengths.
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