公开(公告)号：US20170059889A1

公开(公告)日：2017-03-02

申请号：US15348018

申请日：2016-11-10

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN ,  Hari SHANKAR ,  Masaki KATO ,  Yang FU

IPC: G02F1/01 ,  H04B10/50 ,  G02F1/225

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度。 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）。

公开(公告)号：US20160204874A1

公开(公告)日：2016-07-14

申请号：US15078661

申请日：2016-03-23

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN

IPC: H04B10/54 ,  H04J14/02 ,  H04L7/00 ,  H04B10/40

CPC classification number: H04B10/40 ,  H04B10/2575 ,  H04B10/503 ,  H04B10/541 ,  H04J14/02 ,  H04L7/0075 ,  H04L12/40045 ,  H04L25/03006 ,  H04L2025/03433

Abstract: In an example, an integrated system-on-chip device is configured on a single silicon substrate member. The device has a data input/output interface provided on the substrate member. The device has an input/output block provided on the substrate member and coupled to the data input/output interface. The device has a signal processing block provided on the substrate member and coupled to the input/output block. The device has a driver module provided on the substrate member and coupled to the signal processing block. In an example, the device has a driver interface provided on the substrate member and coupled to the driver module and configured to be coupled to a silicon photonics device. A control block is configured to receive and send instruction(s) in a digital format to the communication block and is configured to receive and send signals in an analog format to communicate with the silicon photonics device.

Abstract translation: 在一个示例中，集成片上系统器件配置在单个硅衬底构件上。 该设备具有设置在基板部件上的数据输入/输出接口。 该装置具有设置在基板部件上并与数据输入/输出接口耦合的输入/输出块。 该装置具有设置在基板构件上并耦合到输入/输出块的信号处理块。 该装置具有设置在基板部件上并与信号处理块相连的驱动器模块。 在一个示例中，该设备具有设置在该衬底构件上的驱动器接口并且耦合到该驱动器模块并被配置为耦合到硅光子器件。 控制块被配置为以数字格式接收和发送指令给通信块，并且被配置为以模拟格式接收和发送信号以与硅光子器件通信。

公开(公告)号：US20150341123A1

公开(公告)日：2015-11-26

申请号：US14815824

申请日：2015-07-31

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN

IPC: H04B10/70

CPC classification number: H04B10/40 ,  H01S5/0261 ,  H01S5/0427 ,  H03L7/0807 ,  H03L2207/50 ,  H04B10/07955 ,  H04B10/541 ,  H04B10/5561 ,  H04B10/70 ,  H04B10/801 ,  H04J14/0221 ,  H04L49/109

Abstract: In an example, the present invention includes an integrated system on chip device. The device is configured on a single silicon substrate member. The device has a data input/output interface provided on the substrate member. The device has an input/output block provided on the substrate member and coupled to the data input/output interface. The device has a signal processing block provided on the substrate member and coupled to the input/output block. The device has a driver module provided on the substrate member and coupled to the signal processing block. In an example, the device has a driver interface provided on the substrate member and coupled to the driver module and configured to be coupled to a silicon photonics device. The device also has an interface configured to communicate between the silicon photonics device and the control block.

Abstract translation: 在一个示例中，本发明包括集成片上系统设备。 该器件配置在单个硅衬底构件上。 该设备具有设置在基板部件上的数据输入/输出接口。 该装置具有设置在基板部件上并与数据输入/输出接口耦合的输入/输出块。 该装置具有设置在基板构件上并耦合到输入/输出块的信号处理块。 该装置具有设置在基板部件上并与信号处理块相连的驱动器模块。 在一个示例中，该设备具有设置在该衬底构件上的驱动器接口并且耦合到该驱动器模块并被配置为耦合到硅光子器件。 该器件还具有被配置为在硅光子器件和控制块之间通信的接口。

公开(公告)号：US20220085575A1

公开(公告)日：2022-03-17

申请号：US17024473

申请日：2020-09-17

Applicant: INPHI CORPORATION

Inventor： Xiaoguang HE ,  Radhakrishnan L. NAGARAJAN

IPC: H01S5/30 ,  H01S5/026 ,  H01S5/50 ,  H01S5/068 ,  H01S5/028

Abstract: A semiconductor optical amplifier for high-power operation includes a gain medium having a multilayer structure sequentially laid with a P-layer, an active layer, a N-layer from an upper portion to a lower portion in cross-section thereof. The gain medium is extendedly laid with a length L from a front facet to a back facet. The active layer includes multiple well layers formed by undoped semiconductor material and multiple barrier layers formed by n-doped semiconductor materials. Each well layer is sandwiched by a pair of barrier layers. The front facet is characterized by a first reflectance Rf and the back facet is characterized by a second reflectance Rb. The gain medium has a mirror loss αm about 40-200 cm−1 given by: αm=(½L)ln{1/(Rf×Rb)}.

公开(公告)号：US20210058160A1

公开(公告)日：2021-02-25

申请号：US17090482

申请日：2020-11-05

Applicant: INPHI CORPORATION

Inventor： Todd ROPE ,  Hari SHANKAR ,  Radhakrishnan L. NAGARAJAN

IPC: H04B10/516 ,  H04B10/40 ,  H04B10/079 ,  H04B10/572 ,  H04L1/00 ,  H04B10/50 ,  H04L1/20

Abstract: The present invention is directed to communication systems and methods. In a specific embodiment, the present invention provides an optical receiver that receives a data stream from an optical transmitter. The optical receiver determines a histogram contour parameter using the data stream and inserts the histogram contour parameter into a back-channel data segment, which is then transmitted to the optical transmitter. The optical transmitter changes its data transmission setting based on the histogram contour parameter. There are other embodiments as well.

公开(公告)号：US20200379197A1

公开(公告)日：2020-12-03

申请号：US16995120

申请日：2020-08-17

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN ,  Masaki KATO

IPC: G02B6/43 ,  G02B6/42 ,  G02B6/122

Abstract: A silicon-based edge coupler for coupling a fiber with a waveguide includes a cantilever member being partially suspended with its anchored end coupled to a silicon photonics die in a first part of a silicon substrate and a free end terminated near an edge region separating a second part of the silicon substrate from the first part. The edge coupler further includes a mechanical stopper formed at the edge region with a gap distance ahead of the free end of the cantilever member. Additionally, a V-groove is formed in the second part of the silicon substrate characterized by a top opening and a bottom plane symmetrically connected by two sloped side walls along a fixed Si-crystallography angle. The V-groove is configured to support a fiber with an end facet being pushed against the mechanical stopper and a core center being aligned with the free end of the cantilever member.

公开(公告)号：US20200341193A1

公开(公告)日：2020-10-29

申请号：US16928845

申请日：2020-07-14

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN

IPC: G02B6/12 ,  G02B6/122 ,  H04B10/40 ,  G02B6/126 ,  H01S5/022 ,  H01S5/00 ,  G02B6/42

Abstract: An coherent transceiver includes a single silicon photonics substrate configured to integrate a laser diode chip flip-mounted and coupled with a wavelength tuning section to provide a laser output with tuned wavelengths which is split in X:Y ratio partly into a coherent receiver block as local-oscillator signals and partly into a coherent transmitter block as a light source. The coherent receiver includes a polarization-beam-splitter-rotator to split a coherent input signal to a TE-mode signal and a TM*-mode signal respectively detected by two 90-deg hybrid receivers and a flip-mounted TIA chip assisted by two local-oscillator signals from the tunable laser device. The coherent transmitter includes a driver chip flip-mounted on the silicon photonics substrate to drive a pair of Mach-Zehnder modulators with 90-degree shift in quadrature-phase branches to modulate the laser output to two polarized signals with I/Q modulation and uses a polarization-beam-rotator-combiner to combine them as a coherent output signal.

公开(公告)号：US20200301071A1

公开(公告)日：2020-09-24

申请号：US16842138

申请日：2020-04-07

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN

IPC: G02B6/12 ,  H01S5/022 ,  H01S5/00 ,  G02B6/42 ,  G02B6/126 ,  G02B6/122 ,  H04B10/40

Abstract: An coherent transceiver includes a single silicon photonics substrate configured to integrate a laser diode chip flip-mounted and coupled with a wavelength tuning section to provide a laser output with tuned wavelengths which is split in X:Y ratio partly into a coherent receiver block as local-oscillator signals and partly into a coherent transmitter block as a light source. The coherent receiver includes a polarization-beam-splitter-rotator to split a coherent input signal to a TE-mode signal and a TM*-mode signal respectively detected by two 90-deg hybrid receivers and a flip-mounted TIA chip assisted by two local-oscillator signals from the tunable laser device. The coherent transmitter includes a driver chip flip-mounted on the silicon photonics substrate to drive a pair of Mach-Zehnder modulators with 90-degree shift in quadrature-phase branches to modulate the laser output to two polarized signals with I/Q modulation and uses a polarization-beam-rotator-combiner to combine them as a coherent output signal.

公开(公告)号：US20200225429A1

公开(公告)日：2020-07-16

申请号：US16245076

申请日：2019-01-10

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN ,  Masaki KATO

IPC: G02B6/43 ,  G02B6/42 ,  G02B6/122

Abstract: A silicon-based edge coupler for coupling a fiber with a waveguide includes a cantilever member being partially suspended with its anchored end coupled to a silicon photonics die in a first part of a silicon substrate and a free end terminated near an edge region separating a second part of the silicon substrate from the first part. The edge coupler further includes a mechanical stopper formed at the edge region with a gap distance ahead of the free end of the cantilever member. Additionally, a V-groove is formed in the second part of the silicon substrate characterized by a top opening and a bottom plane symmetrically connected by two sloped side walls along a fixed Si-crystallography angle. The V-groove is configured to support a fiber with an end facet being pushed against the mechanical stopper and a core center being aligned with the free end of the cantilever member.

公开(公告)号：US20200021364A1

公开(公告)日：2020-01-16

申请号：US16582985

申请日：2019-09-25

Applicant: INPHI CORPORATION

Inventor： Todd ROPE ,  Hari SHANKAR ,  Radhakrishnan L. NAGARAJAN

IPC: H04B10/516 ,  H04B10/50 ,  H04L1/00 ,  H04B10/572 ,  H04B10/079 ,  H04B10/40

Abstract: The present invention is directed to communication systems and methods. In a specific embodiment, the present invention provides an optical receiver that receives a data stream from an optical transmitter. The optical receiver determines a histogram contour parameter using the data stream and inserts the histogram contour parameter into a back-channel data segment, which is then transmitted to the optical transmitter. The optical transmitter changes its data transmission setting based on the histogram contour parameter. There are other embodiments as well.