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公开(公告)号：US20210018769A1
公开(公告)日：2021-01-21
申请号：US17032637
申请日：2020-09-25
Applicant: Juniper Networks, Inc.
Inventor： Jonathan Edgar Roth , Erik Norberg
Abstract: A device, such as an electroabsorption modulator, can modulate a light intensity by controllably absorbing a selectable fraction of the light. The device can include a substrate. A waveguide positioned on the substrate can guide light. An active region positioned on the waveguide can receive guided light from the waveguide, absorb a fraction of the received light, and return a complementary fraction of the received light to the waveguide. Such absorption produces heat, mostly at an input portion of the active region. The input portion of the active region can be thermally coupled to the substrate, which can dissipate heat from the input portion, and can help avoid thermal runaway of the device. The active region can be thermally isolated from the substrate away from the input portion, which can maintain a relatively low thermal mass for the active region, and can increase efficiency when heating the active region.
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公开(公告)号：US09825429B1
公开(公告)日：2017-11-21
申请号：US15601139
申请日：2017-05-22
Applicant: Juniper Networks, Inc.
Inventor： Erik Norberg , Brian R. Koch , Gregory Alan Fish
CPC classification number: H01S5/1028 , H01S5/021 , H01S5/026 , H01S5/0425 , H01S5/1014 , H01S5/1032 , H01S5/50 , H01S5/5027 , H04B10/25 , H04B10/66 , H04J14/02
Abstract: Described herein are methods, systems, and apparatuses to utilize a semiconductor optical amplifier (SOA) comprising a silicon layer including a silicon waveguide, a non-silicon layer disposed on the silicon layer and including a non-silicon waveguide, first and second mode transition region comprising tapers in the silicon waveguide and/or the non-silicon waveguide for exchanging light between the waveguide, and a plurality of regions disposed between the first and second mode transition regions comprising different cross-sectional areas of the silicon waveguide and the non-silicon waveguide such that confinement factors for the non-silicon waveguide in each of the plurality of regions differ.
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公开(公告)号：US20190199061A1
公开(公告)日：2019-06-27
申请号：US16286373
申请日：2019-02-26
Applicant: Juniper Networks, Inc.
Inventor： John Parker , Jared Bauters , Jonathan Edgar Roth , Erik Norberg , Gregory Alan Fish
CPC classification number: H01S5/0085 , G01J3/02 , G01J9/0246 , G02B6/12007 , G02B6/29353 , G02B6/29395 , G02B6/29398 , H01S5/0264 , H01S5/0607 , H01S5/0612 , H01S5/0617 , H01S5/06804 , H01S5/0687
Abstract: Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.
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公开(公告)号：US10256607B2
公开(公告)日：2019-04-09
申请号：US16155113
申请日：2018-10-09
Applicant: Juniper Networks, Inc.
Inventor： John Parker , Jared Bauters , Jonathan Edgar Roth , Erik Norberg , Gregory Alan Fish
Abstract: Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.
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公开(公告)号：US10809548B2
公开(公告)日：2020-10-20
申请号：US15685374
申请日：2017-08-24
Applicant: Juniper Networks, Inc.
Inventor： Jonathan Edgar Roth , Erik Norberg
IPC: G02F1/025 , G02F1/017 , G02F1/00 , G02F1/01 , G02B6/136 , G02B6/12 , B82Y20/00 , H01L31/0352 , H01L31/024
Abstract: A device, such as an electroabsorption modulator, can modulate a light intensity by controllably absorbing a selectable fraction of the light. The device can include a substrate. A waveguide positioned on the substrate can guide light. An active region positioned on the waveguide can receive guided light from the waveguide, absorb a fraction of the received light, and return a complementary fraction of the received light to the waveguide. Such absorption produces heat, mostly at an input portion of the active region. The input portion of the active region can be thermally coupled to the substrate, which can dissipate heat from the input portion, and can help avoid thermal runaway of the device. The active region can be thermally isolated from the substrate away from the input portion, which can maintain a relatively low thermal mass for the active region, and can increase efficiency when heating the active region.
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Patent Agency Ranking
公开(公告)号：US10090641B2
公开(公告)日：2018-10-02
申请号：US15805877
申请日：2017-11-07
Applicant: Juniper Networks, Inc.
Inventor： Erik Norberg , Brian R. Koch , Gregory Alan Fish
Abstract: Described herein are methods, systems, and apparatuses to utilize a semiconductor optical amplifier (SOA) comprising a silicon layer including a silicon waveguide, a non-silicon layer disposed on the silicon layer and including a non-silicon waveguide, first and second mode transition region comprising tapers in the silicon waveguide and/or the non-silicon waveguide for exchanging light between the waveguide, and a plurality of regions disposed between the first and second mode transition regions comprising different cross-sectional areas of the silicon waveguide and the non-silicon waveguide such that confinement factors for the non-silicon waveguide in each of the plurality of regions differ.
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公开(公告)号：US20180164501A1
公开(公告)日：2018-06-14
申请号：US15882122
申请日：2018-01-29
Applicant: Juniper Networks, Inc.
Inventor： Erik Norberg , Jonathan Edgar Roth
CPC classification number: G02B6/125 , G02B6/12004 , G02B6/1228 , G02B6/26 , G02B6/4214 , G02B6/4286 , G02B2006/12061 , H01S5/0064
Abstract: Embodiments describe high-efficiency optical waveguide transitions—i.e., creating heterogeneous transitions between Si and III-V semiconductor regions or devices with minimal reflections. This is advantageous for III-V device performance, e.g. for an on-chip lasers achieving lower relative intensity noise (RIN) and lower phase noise by avoiding reflections, higher gain and reduced gain-ripple from an semiconductor optical amplifier (SOA) by avoiding internal reflections in the SOA. Furthermore, in some embodiments, generated photocurrent can be used as a monitor signal for control purposes, thereby avoiding the use of separate tap-monitor photodetectors, which provide additional link loss.
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公开(公告)号：US20180138658A1
公开(公告)日：2018-05-17
申请号：US15805877
申请日：2017-11-07
Applicant: Juniper Networks, Inc.
Inventor： Erik Norberg , Brian R. Koch , Gregory Alan Fish
CPC classification number: H01S5/1028 , H01S5/021 , H01S5/026 , H01S5/0425 , H01S5/1014 , H01S5/1032 , H01S5/50 , H01S5/5027 , H04B10/25 , H04B10/66 , H04J14/02
Abstract: Described herein are methods, systems, and apparatuses to utilize a semiconductor optical amplifier (SOA) comprising a silicon layer including a silicon waveguide, a non-silicon layer disposed on the silicon layer and including a non-silicon waveguide, first and second mode transition region comprising tapers in the silicon waveguide and/or the non-silicon waveguide for exchanging light between the waveguide, and a plurality of regions disposed between the first and second mode transition regions comprising different cross-sectional areas of the silicon waveguide and the non-silicon waveguide such that confinement factors for the non-silicon waveguide in each of the plurality of regions differ.
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公开(公告)号：US10128634B2
公开(公告)日：2018-11-13
申请号：US15689352
申请日：2017-08-29
Applicant: Juniper Networks, Inc.
Inventor： John Parker , Jared Bauters , Jonathan Edgar Roth , Erik Norberg , Gregory Alan Fish
IPC: H01S5/068 , G02B6/293 , H01S5/0687 , H01S5/06
Abstract: Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.
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公开(公告)号：US09964703B2
公开(公告)日：2018-05-08
申请号：US15689319
申请日：2017-08-29
Applicant: Juniper Networks, Inc.
Inventor： John Parker , Jared Bauters , Jonathan Edgar Roth , Erik Norberg , Gregory Alan Fish
CPC classification number: G02B6/12019 , G01J9/0246 , G02B6/12004 , H01S3/06754 , H01S5/0078 , H01S5/0085 , H01S5/021 , H01S5/0265 , H01S5/0268 , H01S5/0687 , H04B10/25 , H04B10/572
Abstract: Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.
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