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公开(公告)号：US10133002B2
公开(公告)日：2018-11-20
申请号：US15833937
申请日：2017-12-06
Applicant: INPHI CORPORATION
Inventor： Jie Lin
Abstract: A compact polarization beam rotator includes a converter waveguide comprising a first segment and a second segment both in corresponding taper rib shapes sharing a first middle plane and configured to receive an input optical signal with TM polarization mode from an input plane and convert the TM polarization mode to TE1 polarization mode comprising a first arm mode and a second arm mode at a second middle plane. The polarization beam rotator additionally includes a splitter waveguide coupled to the second middle plane for separating the first arm mode and the second arm mode at a third plane respectively coupled to a first branch waveguide to deliver the first arm mode in phase and a second branch waveguide to reverse the second arm mode phase by 180°, and a 2×1 MMI coupler waveguide to combine both arm modes in phase to an output optical signal with TE polarization mode.
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公开(公告)号：US10036853B1
公开(公告)日：2018-07-31
申请号：US15464805
申请日：2017-03-21
Applicant: INPHI CORPORATION
Inventor： Jie Lin
CPC classification number: G02B6/29344 , G02B6/12007
Abstract: A multiplexer/demultiplexer for at least two wavelengths in O-band. The multiplexer/demultiplexer includes a silicon waveguide block having a first port, a second/third port respectively in bar/cross position at an opposing end plane relative to the first port. The silicon waveguide block is configured to provide a general interference excitation of a light wave of a first wavelength and a second wavelength respectively selected from two windows in O-band. The light wave is either inputted via the first port and split into a first output light of the first wavelength out of the second port and a second output light of the second wavelength out of the third port, or is combined of a first input light of the first wavelength from the second port and a second input light of the second wavelength from the third port and outputted via the first port with both wavelengths.
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公开(公告)号：US09696604B1
公开(公告)日：2017-07-04
申请号：US15261669
申请日：2016-09-09
Applicant: INPHI CORPORATION
Inventor： Jie Lin , Masaki Kato , Robb Johnson
CPC classification number: G02F1/2257 , G02B6/134 , G02B6/136 , G02B2006/12061 , G02B2006/12142 , G02B2006/12173 , G02F2001/212
Abstract: A method of forming a waveguide for a self-aligned Mach-Zehnder-Interferometer. The method includes forming a waveguide on a substrate and providing a first mask with a first opening exposing a first width and a pair of second widths towards opposite sides of the first width. Additionally, the method includes doping a first dopant of a first concentration through the first opening into a first thickness of the waveguide to form a first semiconducting phase thereof. The method includes providing a second mask with a second opening exposing part of the waveguide and doping a second dopant of a second concentration through the second opening into the part of the waveguide to form a second semiconductor phase thereof sharing a boundary with the first semiconducting phase to form a PN junction across the boundary. The boundary is allowed to vary with a margin of tolerance within the first width.
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公开(公告)号：US11099327B2
公开(公告)日：2021-08-24
申请号：US16814825
申请日：2020-03-10
Applicant: INPHI CORPORATION
Inventor： Jie Lin , Masaki Kato
Abstract: The present application discloses a Transverse Electric (TE) polarizer. The TE polarizer includes a semiconductor substrate having an oxide layer. The TE polarizer further includes a waveguide embedded in the oxide layer. Additionally, the TE polarizer includes a plate structure embedded in the oxide layer substantially in parallel to the waveguide with a gap distance. In an embodiment, the plate structure induces an extra transmission loss to a Transverse Magnetic (TM) mode in a light wave traveling through the waveguide.
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公开(公告)号：US10126507B1
公开(公告)日：2018-11-13
申请号：US16025890
申请日：2018-07-02
Applicant: INPHI CORPORATION
Inventor： Jie Lin
Abstract: A multiplexer/demultiplexer for at least two wavelengths in O-band. The multiplexer/demultiplexer includes a silicon waveguide block having a first port, a second/third port respectively in bar/cross position at an opposing end plane relative to the first port. The silicon waveguide block is configured to provide a general interference excitation of a light wave of a first wavelength and a second wavelength respectively selected from two windows in O-band. The light wave is either inputted via the first port and split into a first output light of the first wavelength out of the second port and a second output light of the second wavelength out of the third port, or is combined of a first input light of the first wavelength from the second port and a second input light of the second wavelength from the third port and outputted via the first port with both wavelengths.
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Patent Agency Ranking
公开(公告)号：US10101532B1
公开(公告)日：2018-10-16
申请号：US15881428
申请日：2018-01-26
Applicant: INPHI CORPORATION
Inventor： Jie Lin
Abstract: A waveguide-based polarization splitter-rotator (PSR) includes a converter with tapered rib-structure configured to convert TM0/TE0 polarization mode of an input light to a TE1/TE0 mode, a splitter coupled to the first plane for splitting the input light evenly to a first wave at a first port and a second wave at a second port. Furthermore, the PSR includes a phase shifter having a first arm coupled to first port and a second arm coupled to the second port. The first arm guides the first wave to a third port with no phase shift while the second arm adds 90 or 270 degrees to the second wave. The PSR also includes a 2×2 MMI coupler for coupling the first wave and the second wave to output a first output light in TE0 mode exclusively from TM0 mode and a second output light in TE0 mode exclusively from TE0 mode.
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公开(公告)号：US09997508B2
公开(公告)日：2018-06-12
申请号：US15637889
申请日：2017-06-29
Applicant: INPHI CORPORATION
Inventor： Jie Lin , Masaki Kato
IPC: G02B6/12 , H01L27/02 , H01L27/144 , H01L31/0232 , H01L31/028 , H01L31/103 , H01L31/18 , H01L31/02
CPC classification number: H01L27/0248 , G02B6/12 , G02B6/12004 , G02B6/4275 , G02B2006/12123 , H01L27/1443 , H01L31/02005 , H01L31/02019 , H01L31/022408 , H01L31/02327 , H01L31/028 , H01L31/103 , H01L31/1804
Abstract: An integrated photo detector with enhanced electrostatic discharge damage (ESD) protection. The integrated photo detector includes a first photodiode formed in the SOI substrate and associated with a first p-electrode and a first n-electrode. Additionally, the integrated photo detector includes a second photodiode formed in the SOI substrate associated with a second p-electrode and a second n-electrode forming a capacitance no larger than a few femto Faradays. Moreover, the integrated photo detector includes a first electrode and a second electrode disposed respectively on the SOI substrate. The first/second electrode is respectively connected to the first p/n-electrode via a first/second metallic layer patterned with a reduced width from the first/second electrode to the first p/n-electrode and connected to the second p/n-electrode via a first/second metallic wire to make a parallel coupling between the first photodiode and the second photodiode with an ESD threshold of about 100V.
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公开(公告)号：US09915781B1
公开(公告)日：2018-03-13
申请号：US15472156
申请日：2017-03-28
Applicant: INPHI CORPORATION
Inventor： Jie Lin
CPC classification number: G02B6/126 , G02B6/1228 , G02B6/125 , G02B6/2726 , G02B6/2766 , G02B6/2773 , G02B6/2813 , G02B2006/12061 , G02B2006/12097
Abstract: A waveguide-based polarization splitter-rotator (PSR) includes a converter with tapered rib-structure configured to convert TM0/TE0 polarization mode of an input light to a TE1/TE0 mode, a splitter coupled to the first plane for splitting the input light evenly to a first wave at a first port and a second wave at a second port. Furthermore, the PSR includes a phase shifter having a first arm coupled to first port and a second arm coupled to the second port. The first arm guides the first wave to a third port with no phase shift while the second arm adds 90 or 270 degrees to the second wave. The PSR also includes a 2×2 MMI coupler for coupling the first wave and the second wave to output a first output light in TE0 mode exclusively from TM0 mode and a second output light in TE0 mode exclusively from TE0 mode.
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公开(公告)号：US09864141B1
公开(公告)日：2018-01-09
申请号：US15374472
申请日：2016-12-09
Applicant: INPHI CORPORATION
Inventor： Jie Lin
CPC classification number: G02B6/2766 , G02B6/1228 , G02B6/126 , G02B6/2726 , G02B2006/12061 , G02B2006/1215 , G02B2006/12152
Abstract: A compact polarization beam rotator includes a converter waveguide comprising a first segment and a second segment both in corresponding taper rib shapes sharing a first middle plane and configured to receive an input optical signal with TM polarization mode from an input plane and convert the TM polarization mode to TE1 polarization mode comprising a first arm mode and a second arm mode at a second middle plane. The polarization beam rotator additionally includes a splitter waveguide coupled to the second middle plane for separating the first arm mode and the second arm mode at a third plane respectively coupled to a first branch waveguide to deliver the first arm mode in phase and a second branch waveguide to reverse the second arm mode phase by 180°, and a 2×1 MMI coupler waveguide to combine both arm modes in phase to an output optical signal with TE polarization mode.
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公开(公告)号：US09366818B1
公开(公告)日：2016-06-14
申请号：US14935356
申请日：2015-11-06
Applicant: INPHI CORPORATION
Inventor： Jie Lin , Masaki Kato
CPC classification number: G02B6/126 , G02B6/2773 , G02B6/2804 , G02B2006/12035 , G02B2006/12116 , G02B2006/12147 , G02B2006/1215 , G02B2006/12164
Abstract: A compact polarization beam splitter is formed by cascading two stages of directional couplers each containing two waveguides laid in parallel with a coupling gap. Each waveguide is made by silicon nitride material having a minimum length configured to be comparable with a coupling length for a TE polarization mode being set as twice of a coupling length for a TM polarization mode. A first-stage direction coupler is optimized by making the coupling gap smaller/greater than a nominal value to maximize TE/TM extinction ratio at least for a shorter/longer wavelength window of a designated wavelength band and each of two second-stage directional couplers is optimized by making the coupling gap greater/smaller than the nominal value to maximize TE/TM extinction ratio at least for a complementary longer/shorter wavelength window of the same designated wavelength band.
Abstract translation: 紧凑的偏振分束器通过级联两级定向耦合器形成，每个定向耦合器包含与耦合间隙平行放置的两个波导。 每个波导由氮化硅材料制成，其最小长度被配置为与用于TM偏振模式的TE偏振模式的耦合长度的两倍的耦合长度相当。 通过使耦合间隙小于/大于标称值来优化第一级方向耦合器，以使至少对于指定波长带的较短/较长波长窗口以及两个第二级定向耦合器中的每一个的TE / TM消光比最大化 通过使耦合间隙大于/小于标称值来优化，以使至少对于相同指定波长带的互补较长/较短波长窗口最大化TE / TM消光比。
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