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公开(公告)号：US09553671B1
公开(公告)日：2017-01-24
申请号：US14793636
申请日：2015-07-07
Applicant: Inphi Corporation
Inventor： Radhakrishnan L. Nagarajan , Peng-Chih Li , Masaki Kato
IPC: H04B10/00 , H04B10/40 , H04B10/516
CPC classification number: G02B6/4246 , G02B6/421 , G02B6/4215 , G02B6/4249 , G02B6/4256 , G02B6/4278 , G02B6/428 , G02B6/4292 , H04B10/40 , H04B10/516
Abstract: A photonic transceiver apparatus in Quad Small Form-factor Pluggable (QSFP) package. The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a printed circuit board (PCB), installed inside the spatial volume over the base member having a pluggable electrical connector at the back end. Further, the apparatus includes multiple optical transmitting devices in mini-transmit-optical-sub-assembly package, each being mounted on a common support structure and having a laser output port in reversed orientation toward the back end. Furthermore, the apparatus includes a silicon photonics chip, including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance amplifier module. Moreover, the apparatus includes a pair of optical input/output ports being back connected to the fiber-to-silicon attachment module.
Abstract translation: 四芯小型可插拔（QSFP）封装中的光子收发器设备。 该装置包括具有底座构件，两个部分侧构件和盖构件的壳体，以在基座构件的后端提供具有开口的空间体积。 此外，该设备包括印刷电路板（PCB），该印刷电路板（PCB）安装在基座部件的空间体积内部，在后端具有可插拔的电连接器。 此外，该装置包括微型发射 - 光学 - 子组件封装中的多个光学传输装置，每个光学传输装置均安装在共同的支撑结构上，并且具有朝向后端的反向取向的激光输出端口。 此外，该装置包括硅光子芯片，其包括安装在PCB上的光纤到硅附着模块，并耦合到调制驱动器模块和跨阻放大器模块。 此外，该装置包括一对光输入/输出端口，其后连接到光纤到硅附接模块。
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12.发明授权公开(公告)号：US09548816B2
公开(公告)日：2017-01-17
申请号：US15076414
申请日：2016-03-21
Applicant: INPHI CORPORATION
Inventor： Masaki Kato
CPC classification number: H04B10/43 , H04B10/40 , H04B10/506 , H04B10/676 , H04J14/02
Abstract: Method and devices of controlling wavelengths in two-channel DEMUX/MUX in silicon photonics are provided. The two-channel DEMUX/MUX includes a waveguide-based delay-line-interferometer at least in receiver portion of a two-channel transceiver for DWDM optical transmission loop and is configured to split a light wave with combined two-wavelengths into one light wave with locked one channel wavelength and another light wave with locked another channel wavelength. The waveguide-based delayed-line interferometer (DLI) is characterized by a free-spectral-range configured to be equal to twice of channel spacing. The method includes tuning heater of DLI in receiver of each two-channel transceiver by using either low-frequency dither signals added on MZMs associated with respective two channels as feedback signal or one DFB laser wavelength tapped from an input of transmitter portion at one channel before or after the MZMs as a direct wavelength reference to feed into an output of receiver portion at another channel.
Abstract translation: 提供了在硅光子学中控制双通道DEMUX / MUX中的波长的方法和装置。 双通道DEMUX / MUX至少在用于DWDM光传输环路的双通道收发器的接收器部分中包括基于波导的延迟线干涉仪，并且被配置为将具有组合的两个波长的光波分成一个光波 锁定一个信道波长，另一个光波锁定另一个信道波长。 基于波导的延迟线干涉仪（DLI）的特征在于被配置为等于信道间隔的两倍的自由谱范围。 该方法包括通过使用与相应的两个通道相关联的MZM上附加的低频抖动信号作为反馈信号或者在一个通道的发射器部分的输入端抽头的一个DFB激光波长，在每个双通道收发器的接收机中调谐DLI的加热器。 或在MZM之后作为直接波长参考，以在另一个通道上馈送到接收器部分的输出。
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13.发明授权公开(公告)号：US09325419B1
公开(公告)日：2016-04-26
申请号：US14536294
申请日：2014-11-07
Applicant: INPHI CORPORATION
Inventor： Masaki Kato
CPC classification number: H04B10/43 , H04B10/40 , H04B10/506 , H04B10/676 , H04J14/02
Abstract: Method and devices of controlling wavelengths in two-channel DEMUX/MUX in silicon photonics are provided. The two-channel DEMUX/MUX includes a waveguide-based delay-line-interferometer at least in receiver portion of a two-channel transceiver for DWDM optical transmission loop and is configured to split a light wave with combined two-wavelengths into one light wave with locked one channel wavelength and another light wave with locked another channel wavelength. The waveguide-based delayed-line interferometer (DLI) is characterized by a free-spectral-range configured to be equal to twice of channel spacing. The method includes tuning heater of DLI in receiver of each two-channel transceiver by using either low-frequency dither signals added on MZMs associated with respective two channels as feedback signal or one DFB laser wavelength tapped from an input of transmitter portion at one channel before or after the MZMs as a direct wavelength reference to feed into an output of receiver portion at another channel.
Abstract translation: 提供了在硅光子学中控制双通道DEMUX / MUX中的波长的方法和装置。 双通道DEMUX / MUX至少在用于DWDM光传输环路的双通道收发器的接收器部分中包括基于波导的延迟线干涉仪，并且被配置为将具有组合的两个波长的光波分成一个光波 锁定一个信道波长，另一个光波锁定另一个信道波长。 基于波导的延迟线干涉仪（DLI）的特征在于被配置为等于信道间隔的两倍的自由谱范围。 该方法包括通过使用与相应的两个通道相关联的MZM上添加的低频抖动信号作为反馈信号或者在一个通道的发射器部分的输入端抽头的一个DFB激光波长，在每个双通道收发器的接收机中调谐DLI的加热器。 或在MZM之后作为直接波长参考，以在另一个通道上馈送到接收器部分的输出。
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公开(公告)号：US10274688B2
公开(公告)日：2019-04-30
申请号：US16013737
申请日：2018-06-20
Applicant: INPHI CORPORATION
Inventor： Radhakrishnan L. Nagarajan , Peng-Chih Li , Masaki Kato
IPC: G02B6/42 , H04B10/40 , H04B10/516
Abstract: A photonic transceiver apparatus in QSFP package. The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a PCB, installed inside the spatial volume over the base member having a pluggable electrical connector at the back end. Further, the apparatus includes multiple optical transmitting devices in mini-transmit-optical-sub-assembly package, each being mounted on a common support structure and having a laser output port in reversed orientation toward the back end. Furthermore, the apparatus includes a silicon photonics chip, including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance amplifier module. Moreover, the apparatus includes a pair of optical input/output ports being back connected to the fiber-to-silicon attachment module.
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公开(公告)号：US10133004B2
公开(公告)日：2018-11-20
申请号：US15928732
申请日：2018-03-22
Applicant: INPHI CORPORATION
Inventor： Masaki Kato , Radhakrishnan L. Nagarajan
Abstract: An apparatus for converting fiber mode to waveguide mode. The apparatus includes a silicon substrate member and a dielectric member having an elongated body. Part of the elongated body from a back end overlies the silicon substrate member and remaining part of the elongated body up to a front end is separated from the silicon substrate member by a second dielectric material at an under region. The apparatus also includes a waveguide including a segment from the back end to a tail end formed on the dielectric member at least partially overlying the remaining part of the elongated body. The segment is buried in a cladding overlying entirely the dielectric member. The cladding has a refractive index that is less than the waveguide but includes an index-graded section with decreasing index that is formed at least over the segment from the tail end toward the back end.
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Patent Agency Ranking
公开(公告)号：US09846347B2
公开(公告)日：2017-12-19
申请号：US15459528
申请日：2017-03-15
Applicant: INPHI CORPORATION
Inventor： Masaki Kato
CPC classification number: G02F1/2257 , G02F1/025 , G02F2001/212 , G02F2201/121 , G02F2201/126
Abstract: An apparatus for modulating a beam of light with balanced push-pull mechanism. The apparatus includes a first waveguide comprising a first PN junction on a silicon-on-insulator substrate and a second waveguide comprising a second PN junction on the silicon-on-insulator substrate. The second PN junction is a replica of the first PN junction shifted with a distance. The apparatus further includes a first source electrode and a first ground electrode coupled respectively with the first PN junction and a second source electrode and a second ground electrode coupled respectively with the second PN junction. The apparatus additionally includes a third ground electrode disposed near the second PN junction at the distance away from the second ground electrode, wherein the first ground electrode, the second ground electrode, and the third ground electrode are commonly grounded to have both PN junctions subjected to a substantially same electric field varied in ground-source-ground pattern.
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公开(公告)号：US09746744B1
公开(公告)日：2017-08-29
申请号：US15609655
申请日：2017-05-31
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：US09671580B1
公开(公告)日：2017-06-06
申请号：US15075021
申请日：2016-03-18
Applicant: INPHI CORPORATION
Inventor： Radhakrishnan L. Nagarajan , Peng-Chih Li , Masaki Kato , Chris Togami
CPC classification number: G02B6/4257 , G02B6/32 , G02B6/3849 , G02B6/3893 , G02B6/4206 , G02B6/4208 , G02B6/421 , G02B6/4246 , G02B6/4251 , G02B6/4271 , G02B6/428 , G02B6/4281 , G02B6/4284 , G02B6/4286 , G02B6/4292 , G02B6/4295 , G02F1/2255 , H04B1/3833 , H04B10/40 , H04B10/503 , H04B10/516 , H04J14/02 , H05K3/30
Abstract: An apparatus for packaging a photonic transceiver. The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a PCB installed inside the spatial volume over the base member with a pluggable connector at the back end. The apparatus includes one or more optical transmitting devices being mounted upside-down via a flex circuit board bended 180 degrees inward to a backside of the PCB and including a built-in TEC module in contact with the lid member. Furthermore, the apparatus includes a silicon photonics chip including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance-amplifier module. Moreover, the apparatus includes an optical input port and output port being back connected to the fiber-to-silicon attachment module.
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公开(公告)号：US09641255B1
公开(公告)日：2017-05-02
申请号：US15405214
申请日：2017-01-12
Applicant: INPHI CORPORATION
Inventor： Masaki Kato
CPC classification number: H04B10/43 , H04B10/40 , H04B10/506 , H04B10/676 , H04J14/02
Abstract: Method and devices of controlling wavelengths in two-channel DEMUX/MUX in silicon photonics are provided. The two-channel DEMUX/MUX includes a waveguide-based delay-line-interferometer at least in receiver portion of a two-channel transceiver for DWDM optical transmission loop and is configured to split a light wave with combined two-wavelengths into one light wave with locked one channel wavelength and another light wave with locked another channel wavelength. The waveguide-based delayed-line interferometer (DLI) is characterized by a free-spectral-range configured to be equal to twice of channel spacing. The method includes tuning heater of DLI in receiver of each two-channel transceiver by using either low-frequency dither signals added on MZMs associated with respective two channels as feedback signal or one DFB laser wavelength tapped from an input of transmitter portion at one channel before or after the MZMs as a direct wavelength reference to feed into an output of receiver portion at another channel.
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20.发明授权Off quadrature biasing of Mach Zehnder modulator for improved OSNR performance 有权马赫曾德调制器的正交偏置关闭，以提高OSNR性能公开(公告)号：US09523867B2
公开(公告)日：2016-12-20
申请号：US15072866
申请日：2016-03-17
Applicant: INPHI CORPORATION
Inventor： Radhakrishnan L. Nagarajan , Hari Shankar , Masaki Kato , Yang Fu
CPC classification number: G02F1/0123 , G02B6/12007 , G02F1/0147 , G02F1/025 , G02F1/225 , G02F1/2255 , G02F2001/212 , G02F2202/105 , H01S3/06754 , H01S3/1608 , H01S5/0085 , H01S5/0687 , H01S5/4012 , H01S5/4087 , H04B10/505 , H04B10/50575
Abstract: An integrated optical modulator device. The device can include a driver module coupled to an optical modulator. The optical modulator is characterized by a raised cosine transfer function. This optical modulator can be coupled to a light source and a bias control module, which is configured to apply an off-quadrature bias to the optical modulator. This bias can be accomplished by applying an inverse of the modulator transfer function to the optical modulator in order to minimize a noise variance. This compression function can result in an optimized increased top eye opening for a signal associated with the optical modulator. Furthermore, the optical modulator can be coupled to an EDFA (Erbium Doped Fiber Amplifier) that is coupled to a filter coupled an O/E (Optical-to-Electrical) receiver.
Abstract translation: 集成光调制器装置。 该装置可以包括耦合到光调制器的驱动器模块。 光调制器的特征在于升高的余弦传递函数。 该光调制器可以耦合到光源和偏置控制模块，该偏置控制模块被配置为向光调制器施加非正交偏置。 可以通过将调制器传递函数的反相应用于光调制器来实现该偏置，以便最小化噪声方差。 该压缩功能可以导致用于与光学调制器相关联的信号的优化的增加的顶部眼睛开放。 此外，光调制器可以耦合到耦合到耦合到O / E（光 - 电）接收器的滤波器的EDFA（掺铒光纤放大器）。
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